{"id":"CVE-2025-39821","aliases":["BELL-CVE-2025-39821","DEBIAN-CVE-2025-39821","EUVD-2025-29593","GHSA-cqwc-52gw-4x53","UBUNTU-CVE-2025-39821"],"status":"published","title":"perf: Avoid undefined behavior from stopping/starting inactive events","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Avoid undefined behavior from stopping/starting inactive events\n\nCalling pmu-\u003estart()/stop() on perf events in PERF_EVENT_STATE_OFF can\nleave event-\u003ehw.idx at -1. When PMU drivers later attempt to use this\nnegative index as a shift exponent in bitwise operations, it leads to UBSAN\nshift-out-of-bounds reports.\n\nThe issue is a logical flaw in how event groups handle throttling when some\nmembers are intentionally disabled. Based on the analysis and the\nreproducer provided by Mark Rutland (this issue on both arm64 and x86-64).\n\nThe scenario unfolds as follows:\n\n 1. A group leader event is configured with a very aggressive sampling\n    period (e.g., sample_period = 1). This causes frequent interrupts and\n    triggers the throttling mechanism.\n 2. A child event in the same group is created in a disabled state\n    (.disabled = 1). This event remains in PERF_EVENT_STATE_OFF.\n    Since it hasn't been scheduled onto the PMU, its event-\u003ehw.idx remains\n    initialized at -1.\n 3. When throttling occurs, perf_event_throttle_group() and later\n    perf_event_unthrottle_group() iterate through all siblings, including\n    the disabled child event.\n 4. perf_event_throttle()/unthrottle() are called on this inactive child\n    event, which then call event-\u003epmu-\u003estart()/stop().\n 5. The PMU driver receives the event with hw.idx == -1 and attempts to\n    use it as a shift exponent. e.g., in macros like PMCNTENSET(idx),\n    leading to the UBSAN report.\n\nThe throttling mechanism attempts to start/stop events that are not\nactively scheduled on the hardware.\n\nMove the state check into perf_event_throttle()/perf_event_unthrottle() so\nthat inactive events are skipped entirely. This ensures only active events\nwith a valid hw.idx are processed, preventing undefined behavior and\nsilencing UBSAN warnings. The corrected check ensures true before\nproceeding with PMU operations.\n\nThe problem can be reproduced with the syzkaller reproducer:","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00164,"percentile":0.05639,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-787"],"published":"2025-09-16T13:00:20Z","modified":"2026-10-28T02:30:35Z","fixes":[{"ecosystem":"Alpaquita:stream","package":"linux-lts","fixed_in":["6.18.35-r1"],"sources":["osv"]},{"ecosystem":"Linux","package":"Kernel","fixed_in":["6.16.5"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"linux","fixed_in":["6.16.5-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpaquita:stream","package":"linux-lts","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.12.92-r1"},{"fixed":"6.18.35-r1"}]}]},{"source":"osv","ecosystem":"Linux","package":"Kernel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.16.0"},{"fixed":"6.16.5"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.16.5-1"}]}],"versions":["6.12.100-1","6.12.101-1","6.12.105-1","6.12.107-1","6.12.111-1","6.12.113-1","6.12.38-1","6.12.41-1","6.12.43-1","6.12.43-1~bpo12+1","6.12.48-1","6.12.57-1","6.12.57-1~bpo12+1","6.12.63-1","6.12.63-1~bpo12+1","6.12.69-1","6.12.69-1~bpo12+1","6.12.73-1","6.12.73-1~bpo12+1","6.12.74-1","6.12.74-2","6.12.74-2~bpo12+1","6.12.85-1","6.12.85-1~bpo12+1","6.12.86-1","6.12.86-1~bpo12+1","6.12.88-1","6.12.88-1~bpo12+1","6.12.90-1","6.12.90-1~bpo12+1","6.12.90-2","6.12.90-2~bpo12+1","6.12.94-1","6.12.94-1~bpo12+1","6.12.95-1","6.12.95-1~bpo12+1","6.12.96-1","6.13.10-1~exp1","6.13.11-1~exp1","6.13.2-1~exp1","6.13.3-1~exp1","6.13.4-1~exp1","6.13.5-1~exp1","6.13.6-1~exp1","6.13.7-1~exp1","6.13.8-1~exp1","6.13.9-1~exp1","6.13~rc6-1~exp1","6.13~rc7-1~exp1","6.14.3-1~exp1","6.14.5-1~exp1","6.14.6-1~exp1","6.15-1~exp1","6.15.1-1~exp1","6.15.2-1~exp1","6.15.3-1~exp1","6.15.4-1~exp1","6.15.5-1~exp1","6.15.6-1~exp1","6.15~rc7-1~exp1","6.16-1~exp1","6.16.1-1~exp1","6.16.3-1","6.16.3-1~bpo13+1","6.16~rc7-1~exp1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"linux-hwe-edge","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.0-28.30~16.04.1","4.8.0-30.32~16.04.1","4.8.0-32.34~16.04.1","4.8.0-34.36~16.04.1","4.10.0-14.16~16.04.1","4.10.0-19.21~16.04.1","4.10.0-20.22~16.04.1","4.10.0-21.23~16.04.1","4.10.0-22.24~16.04.1","4.10.0-24.28~16.04.1","4.10.0-26.30~16.04.1","4.11.0-13.19~16.04.1","4.11.0-14.20~16.04.1","4.13.0-16.19~16.04.3","4.13.0-17.20~16.04.1","4.13.0-19.22~16.04.1","4.13.0-21.24~16.04.1","4.13.0-25.29~16.04.2","4.15.0-13.14~16.04.1","4.15.0-15.16~16.04.1","4.15.0-20.21~16.04.1","4.15.0-22.24~16.04.1","4.15.0-23.25~16.04.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-aws-5.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.0.0-1021.24~18.04.1","5.0.0-1022.25~18.04.1","5.0.0-1023.26~18.04.1","5.0.0-1024.27~18.04.1","5.0.0-1025.28","5.0.0-1027.30"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-aws-5.3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.3.0-1016.17~18.04.1","5.3.0-1017.18~18.04.1","5.3.0-1019.21~18.04.1","5.3.0-1023.25~18.04.1","5.3.0-1028.30~18.04.1","5.3.0-1030.32~18.04.1","5.3.0-1032.34~18.04.2","5.3.0-1033.35","5.3.0-1034.36","5.3.0-1035.37"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-azure","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.15.0-1002.2","4.15.0-1003.3","4.15.0-1004.4","4.15.0-1008.8","4.15.0-1009.9","4.15.0-1012.12","4.15.0-1013.13","4.15.0-1014.14","4.15.0-1018.18","4.15.0-1019.19","4.15.0-1021.21","4.15.0-1022.23","4.15.0-1023.24","4.15.0-1025.26","4.15.0-1028.29","4.15.0-1030.31","4.15.0-1031.32","4.15.0-1032.33","4.15.0-1035.36","4.15.0-1036.38","4.15.0-1037.39","4.18.0-1011.11~18.04.1","4.18.0-1013.13~18.04.1","4.18.0-1014.14~18.04.1","4.18.0-1018.18~18.04.1","4.18.0-1019.19~18.04.1","4.18.0-1020.20~18.04.1","4.18.0-1023.24~18.04.1","4.18.0-1024.25~18.04.1","4.18.0-1025.27~18.04.1","5.0.0-1014.14~18.04.1","5.0.0-1016.17~18.04.1","5.0.0-1018.19~18.04.1","5.0.0-1020.21~18.04.1","5.0.0-1022.23~18.04.1","5.0.0-1023.24~18.04.1","5.0.0-1025.27~18.04.1","5.0.0-1027.29~18.04.1","5.0.0-1028.30~18.04.1","5.0.0-1029.31~18.04.1","5.0.0-1031.33","5.0.0-1032.34","5.0.0-1035.37","5.0.0-1036.38"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-azure-5.3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.3.0-1007.8~18.04.1","5.3.0-1008.9~18.04.1","5.3.0-1009.10~18.04.1","5.3.0-1010.11~18.04.1","5.3.0-1012.13~18.04.1","5.3.0-1013.14~18.04.1","5.3.0-1016.17~18.04.1","5.3.0-1018.19~18.04.1","5.3.0-1019.20~18.04.1","5.3.0-1020.21~18.04.1","5.3.0-1022.23~18.04.1","5.3.0-1028.29~18.04.1","5.3.0-1031.32~18.04.1","5.3.0-1032.33~18.04.1","5.3.0-1034.35~18.04.1","5.3.0-1035.36"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-azure-edge","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.18.0-1006.6~18.04.1","4.18.0-1007.7~18.04.1","4.18.0-1008.8~18.04.1","5.0.0-1012.12~18.04.2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-gcp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.15.0-1001.1","4.15.0-1003.3","4.15.0-1005.5","4.15.0-1006.6","4.15.0-1008.8","4.15.0-1009.9","4.15.0-1010.10","4.15.0-1014.14","4.15.0-1015.15","4.15.0-1017.18","4.15.0-1018.19","4.15.0-1019.20","4.15.0-1021.22","4.15.0-1023.24","4.15.0-1024.25","4.15.0-1025.26","4.15.0-1026.27","4.15.0-1027.28","4.15.0-1028.29","4.15.0-1029.31","4.15.0-1030.32","4.15.0-1032.34","4.15.0-1033.35","4.15.0-1034.36","4.15.0-1036.38","4.15.0-1037.39","4.15.0-1040.42","4.15.0-1042.45","4.15.0-1044.70","5.0.0-1020.20~18.04.1","5.0.0-1021.21~18.04.1","5.0.0-1025.26~18.04.1","5.0.0-1026.27~18.04.1","5.0.0-1028.29~18.04.1","5.0.0-1029.30~18.04.1","5.0.0-1031.32","5.0.0-1033.34","5.0.0-1034.35"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-gcp-5.3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.3.0-1008.9~18.04.1","5.3.0-1009.10~18.04.1","5.3.0-1010.11~18.04.1","5.3.0-1012.13~18.04.1","5.3.0-1014.15~18.04.1","5.3.0-1016.17~18.04.1","5.3.0-1017.18~18.04.1","5.3.0-1018.19~18.04.1","5.3.0-1020.22~18.04.1","5.3.0-1026.28~18.04.1","5.3.0-1029.31~18.04.1","5.3.0-1030.32~18.04.1","5.3.0-1032.34~18.04.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-gke-4.15","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.15.0-1030.32","4.15.0-1032.34","4.15.0-1033.35","4.15.0-1034.36","4.15.0-1036.38","4.15.0-1037.39","4.15.0-1040.42","4.15.0-1041.43","4.15.0-1042.44","4.15.0-1044.46","4.15.0-1045.48","4.15.0-1046.49","4.15.0-1048.51","4.15.0-1049.52","4.15.0-1050.53","4.15.0-1052.55","4.15.0-1055.58","4.15.0-1057.60","4.15.0-1058.61","4.15.0-1059.62","4.15.0-1063.66","4.15.0-1064.67","4.15.0-1066.69","4.15.0-1067.70","4.15.0-1069.72","4.15.0-1070.73","4.15.0-1072.76","4.15.0-1073.78","4.15.0-1074.79","4.15.0-1076.81","4.15.0-1077.82","4.15.0-1078.83","4.15.0-1079.84"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-gke-5.4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4.0-1025.25~18.04.1","5.4.0-1027.28~18.04.1","5.4.0-1029.31~18.04.1","5.4.0-1030.32~18.04.1","5.4.0-1032.34~18.04.1","5.4.0-1033.35~18.04.1","5.4.0-1035.37~18.04.1","5.4.0-1036.38~18.04.1","5.4.0-1037.39~18.04.1","5.4.0-1039.41~18.04.1","5.4.0-1040.42~18.04.1","5.4.0-1042.44~18.04.1","5.4.0-1043.45~18.04.1","5.4.0-1044.46~18.04.1","5.4.0-1046.48~18.04.1","5.4.0-1049.52~18.04.1","5.4.0-1051.54~18.04.1","5.4.0-1052.55~18.04.1","5.4.0-1053.56~18.04.1","5.4.0-1054.57~18.04.1","5.4.0-1055.58~18.04.1","5.4.0-1056.59~18.04.1","5.4.0-1057.60~18.04.1","5.4.0-1059.62~18.04.1","5.4.0-1061.64~18.04.1","5.4.0-1062.65~18.04.1","5.4.0-1063.66~18.04.1","5.4.0-1065.68~18.04.1","5.4.0-1066.69~18.04.1","5.4.0-1067.70~18.04.1","5.4.0-1068.71~18.04.1","5.4.0-1071.76~18.04.3","5.4.0-1072.77~18.04.1","5.4.0-1074.79~18.04.1","5.4.0-1076.82~18.04.1","5.4.0-1078.84~18.04.1","5.4.0-1080.86~18.04.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-gkeop-5.4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4.0-1001.1","5.4.0-1003.3","5.4.0-1004.5","5.4.0-1005.6","5.4.0-1007.8~18.04.1","5.4.0-1008.9~18.04.1","5.4.0-1009.10~18.04.1","5.4.0-1010.11~18.04.1","5.4.0-1011.12~18.04.2","5.4.0-1012.13~18.04.1","5.4.0-1013.14~18.04.1","5.4.0-1014.15~18.04.1","5.4.0-1015.16~18.04.1","5.4.0-1016.17~18.04.1","5.4.0-1018.19~18.04.1","5.4.0-1021.22~18.04.1","5.4.0-1022.23~18.04.1","5.4.0-1023.24~18.04.1","5.4.0-1024.25~18.04.1","5.4.0-1025.26~18.04.1","5.4.0-1026.27~18.04.1","5.4.0-1027.28~18.04.1","5.4.0-1029.30~18.04.2","5.4.0-1031.32~18.04.1","5.4.0-1032.33~18.04.1","5.4.0-1033.34~18.04.1","5.4.0-1034.35~18.04.1","5.4.0-1036.37~18.04.1","5.4.0-1037.38~18.04.1","5.4.0-1038.39~18.04.1","5.4.0-1039.40~18.04.1","5.4.0-1040.41~18.04.1","5.4.0-1043.44~18.04.1","5.4.0-1046.48~18.04.1","5.4.0-1048.51~18.04.1","5.4.0-1049.52~18.04.1","5.4.0-1051.54~18.04.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-hwe","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.18.0-13.14~18.04.1","4.18.0-14.15~18.04.1","4.18.0-15.16~18.04.1","4.18.0-16.17~18.04.1","4.18.0-17.18~18.04.1","4.18.0-18.19~18.04.1","4.18.0-20.21~18.04.1","4.18.0-21.22~18.04.1","4.18.0-22.23~18.04.1","4.18.0-24.25~18.04.1","4.18.0-25.26~18.04.1","5.0.0-23.24~18.04.1","5.0.0-25.26~18.04.1","5.0.0-27.28~18.04.1","5.0.0-29.31~18.04.1","5.0.0-31.33~18.04.1","5.0.0-32.34~18.04.2","5.0.0-35.38~18.04.1","5.0.0-36.39~18.04.1","5.0.0-37.40~18.04.1","5.3.0-26.28~18.04.1","5.3.0-28.30~18.04.1","5.3.0-40.32~18.04.1","5.3.0-42.34~18.04.1","5.3.0-45.37~18.04.1","5.3.0-46.38~18.04.1","5.3.0-51.44~18.04.2","5.3.0-53.47~18.04.1","5.3.0-59.53~18.04.1","5.3.0-61.55~18.04.1","5.3.0-62.56~18.04.1","5.3.0-64.58~18.04.1","5.3.0-65.59","5.3.0-66.60","5.3.0-67.61","5.3.0-68.63","5.3.0-69.65","5.3.0-70.66","5.3.0-72.68","5.3.0-73.69","5.3.0-74.70","5.3.0-75.71","5.3.0-76.72"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-hwe-edge","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.0.0-15.16~18.04.1","5.0.0-16.17~18.04.1","5.0.0-17.18~18.04.1","5.0.0-19.20~18.04.1","5.0.0-20.21~18.04.1","5.3.0-19.20~18.04.2","5.3.0-22.24~18.04.1","5.3.0-23.25~18.04.1","5.3.0-23.25~18.04.2","5.3.0-24.26~18.04.2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-oem","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.15.0-1002.3","4.15.0-1004.5","4.15.0-1006.9","4.15.0-1008.11","4.15.0-1009.12","4.15.0-1012.15","4.15.0-1013.16","4.15.0-1015.18","4.15.0-1017.20","4.15.0-1018.21","4.15.0-1021.24","4.15.0-1024.29","4.15.0-1026.31","4.15.0-1028.33","4.15.0-1030.35","4.15.0-1033.38","4.15.0-1034.39","4.15.0-1035.40","4.15.0-1036.41","4.15.0-1038.43","4.15.0-1039.44","4.15.0-1043.48","4.15.0-1045.50","4.15.0-1050.57","4.15.0-1056.65","4.15.0-1057.66","4.15.0-1059.68","4.15.0-1063.72","4.15.0-1064.73","4.15.0-1065.75","4.15.0-1066.76","4.15.0-1067.77","4.15.0-1069.79","4.15.0-1073.83","4.15.0-1076.86","4.15.0-1079.89","4.15.0-1080.90","4.15.0-1081.91","4.15.0-1087.97","4.15.0-1090.100","4.15.0-1091.101","4.15.0-1093.103","4.15.0-1094.104","4.15.0-1096.106","4.15.0-1097.107","4.15.0-1099.109","4.15.0-1100.110","4.15.0-1101.112","4.15.0-1102.113","4.15.0-1103.114"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-oracle-5.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.0.0-1007.12~18.04.1","5.0.0-1008.13~18.04.1","5.0.0-1009.14~18.04.1","5.0.0-1010.15~18.04.1","5.0.0-1011.16","5.0.0-1013.18","5.0.0-1014.19"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-oracle-5.3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.3.0-1011.12~18.04.1","5.3.0-1013.14~18.04.1","5.3.0-1014.15~18.04.1","5.3.0-1016.18~18.04.1","5.3.0-1018.20~18.04.1","5.3.0-1024.26~18.04.1","5.3.0-1027.29~18.04.1","5.3.0-1028.30~18.04.1","5.3.0-1030.32~18.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-aws-5.11","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.11.0-1009.9~20.04.2","5.11.0-1014.15~20.04.1","5.11.0-1016.17~20.04.1","5.11.0-1017.18~20.04.1","5.11.0-1019.20~20.04.1","5.11.0-1020.21~20.04.2","5.11.0-1021.22~20.04.2","5.11.0-1022.23~20.04.1","5.11.0-1023.24~20.04.1","5.11.0-1025.27~20.04.1","5.11.0-1027.30~20.04.1","5.11.0-1028.31~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-aws-5.13","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.13.0-1008.9~20.04.2","5.13.0-1011.12~20.04.1","5.13.0-1012.13~20.04.1","5.13.0-1014.15~20.04.1","5.13.0-1017.19~20.04.1","5.13.0-1019.21~20.04.1","5.13.0-1021.23~20.04.2","5.13.0-1022.24~20.04.1","5.13.0-1023.25~20.04.1","5.13.0-1025.27~20.04.1","5.13.0-1028.31~20.04.1","5.13.0-1029.32~20.04.1","5.13.0-1031.35~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-aws-5.8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.8.0-1035.37~20.04.1","5.8.0-1038.40~20.04.1","5.8.0-1041.43~20.04.1","5.8.0-1042.44~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-azure-5.11","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.11.0-1007.7~20.04.2","5.11.0-1012.13~20.04.1","5.11.0-1013.14~20.04.1","5.11.0-1015.16~20.04.1","5.11.0-1017.18~20.04.1","5.11.0-1019.20~20.04.1","5.11.0-1020.21~20.04.1","5.11.0-1021.22~20.04.1","5.11.0-1022.23~20.04.1","5.11.0-1023.24~20.04.1","5.11.0-1025.27~20.04.1","5.11.0-1027.30~20.04.1","5.11.0-1028.31~20.04.2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-azure-5.13","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.13.0-1009.10~20.04.2","5.13.0-1012.14~20.04.1","5.13.0-1013.15~20.04.1","5.13.0-1014.16~20.04.1","5.13.0-1017.19~20.04.1","5.13.0-1021.24~20.04.1","5.13.0-1022.26~20.04.1","5.13.0-1023.27~20.04.1","5.13.0-1025.29~20.04.1","5.13.0-1028.33~20.04.1","5.13.0-1029.34~20.04.1","5.13.0-1031.37~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-azure-5.8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.8.0-1033.35~20.04.1","5.8.0-1036.38~20.04.1","5.8.0-1039.42~20.04.1","5.8.0-1040.43~20.04.1","5.8.0-1041.44~20.04.1","5.8.0-1042.45~20.04.1","5.8.0-1043.46~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-azure-fde","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4.0-1063.66+cvm2.2","5.4.0-1063.66+cvm3.2","5.4.0-1064.67+cvm1.1","5.4.0-1065.68+cvm2.1","5.4.0-1067.70+cvm1.1","5.4.0-1068.71+cvm1.1","5.4.0-1069.72+cvm1.1","5.4.0-1070.73+cvm1.1","5.4.0-1072.75+cvm1.1","5.4.0-1073.76+cvm1.1","5.4.0-1074.77+cvm1.1","5.4.0-1076.79+cvm1.1","5.4.0-1078.81+cvm1.1","5.4.0-1080.83+cvm1.1","5.4.0-1083.87+cvm1.1","5.4.0-1085.90+cvm1.1","5.4.0-1085.90+cvm2.1","5.4.0-1086.91+cvm1.1","5.4.0-1089.94+cvm1.2","5.4.0-1090.95+cvm1.1","5.4.0-1091.96+cvm1.1","5.4.0-1092.97+cvm1.1","5.4.0-1095.101+cvm1.1","5.4.0-1098.104+cvm1.1","5.4.0-1100.106+cvm1.1","5.4.0-1103.109+cvm1.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-gcp-5.11","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.11.0-1009.10~20.04.1","5.11.0-1014.16~20.04.1","5.11.0-1017.19~20.04.1","5.11.0-1018.20~20.04.2","5.11.0-1020.22~20.04.1","5.11.0-1021.23~20.04.1","5.11.0-1022.24~20.04.1","5.11.0-1023.25~20.04.1","5.11.0-1024.26~20.04.1","5.11.0-1026.29~20.04.1","5.11.0-1028.32~20.04.1","5.11.0-1029.33~20.04.3"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-gcp-5.13","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.13.0-1008.9~20.04.3","5.13.0-1012.15~20.04.1","5.13.0-1013.16~20.04.1","5.13.0-1015.18~20.04.1","5.13.0-1019.23~20.04.1","5.13.0-1021.25~20.04.1","5.13.0-1023.28~20.04.1","5.13.0-1024.29~20.04.1","5.13.0-1025.30~20.04.1","5.13.0-1027.32~20.04.1","5.13.0-1030.36~20.04.1","5.13.0-1031.37~20.04.1","5.13.0-1033.40~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-gcp-5.8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.8.0-1032.34~20.04.1","5.8.0-1035.37~20.04.1","5.8.0-1038.40~20.04.1","5.8.0-1039.41"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-gke","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4.0-1033.35","5.4.0-1035.37","5.4.0-1036.38","5.4.0-1037.39","5.4.0-1039.41","5.4.0-1041.43","5.4.0-1042.44","5.4.0-1043.45","5.4.0-1044.46","5.4.0-1046.48","5.4.0-1049.52","5.4.0-1051.54","5.4.0-1052.55","5.4.0-1053.56","5.4.0-1054.57","5.4.0-1055.58","5.4.0-1056.59","5.4.0-1057.60","5.4.0-1059.62","5.4.0-1061.64","5.4.0-1062.65","5.4.0-1063.66","5.4.0-1065.68","5.4.0-1066.69","5.4.0-1067.70","5.4.0-1068.71","5.4.0-1071.76","5.4.0-1072.77","5.4.0-1074.79","5.4.0-1076.82","5.4.0-1078.84","5.4.0-1080.86","5.4.0-1081.87","5.4.0-1083.89","5.4.0-1084.90","5.4.0-1086.93","5.4.0-1087.94","5.4.0-1090.97","5.4.0-1091.98","5.4.0-1094.101","5.4.0-1095.102","5.4.0-1096.103","5.4.0-1097.104","5.4.0-1098.105","5.4.0-1099.106","5.4.0-1100.107","5.4.0-1101.108","5.4.0-1102.109","5.4.0-1103.110","5.4.0-1104.111","5.4.0-1105.112"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-gke-5.15","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.0-1011.14~20.04.1","5.15.0-1014.17~20.04.1","5.15.0-1015.18~20.04.1","5.15.0-1016.19~20.04.1","5.15.0-1019.23~20.04.1","5.15.0-1020.25~20.04.1","5.15.0-1023.28~20.04.2","5.15.0-1027.32~20.04.1","5.15.0-1028.33~20.04.1","5.15.0-1029.34~20.04.1","5.15.0-1031.36~20.04.1","5.15.0-1032.37~20.04.1","5.15.0-1033.38~20.04.1","5.15.0-1034.39~20.04.1","5.15.0-1036.41~20.04.1","5.15.0-1037.42~20.04.1","5.15.0-1038.43~20.04.1","5.15.0-1039.44~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-gkeop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4.0-1008.9","5.4.0-1009.10","5.4.0-1010.11","5.4.0-1011.12","5.4.0-1012.13","5.4.0-1013.14","5.4.0-1014.15","5.4.0-1015.16","5.4.0-1016.17","5.4.0-1018.19","5.4.0-1021.22","5.4.0-1022.23","5.4.0-1023.24","5.4.0-1024.25","5.4.0-1025.26","5.4.0-1026.27","5.4.0-1027.28","5.4.0-1029.30","5.4.0-1031.32","5.4.0-1032.33","5.4.0-1033.34","5.4.0-1034.35","5.4.0-1036.37","5.4.0-1037.38","5.4.0-1038.39","5.4.0-1039.40","5.4.0-1040.41","5.4.0-1043.44","5.4.0-1046.48","5.4.0-1048.51","5.4.0-1049.52","5.4.0-1051.54","5.4.0-1052.55","5.4.0-1053.56","5.4.0-1054.57","5.4.0-1056.60","5.4.0-1057.61","5.4.0-1060.64","5.4.0-1061.65","5.4.0-1062.66","5.4.0-1064.68","5.4.0-1065.69","5.4.0-1066.70","5.4.0-1067.71","5.4.0-1068.72","5.4.0-1069.73","5.4.0-1070.74","5.4.0-1071.75","5.4.0-1072.76","5.4.0-1073.77","5.4.0-1074.78","5.4.0-1075.79","5.4.0-1076.80","5.4.0-1077.81","5.4.0-1078.82","5.4.0-1079.83","5.4.0-1080.84","5.4.0-1081.85","5.4.0-1083.87","5.4.0-1084.88","5.4.0-1085.89","5.4.0-1086.90","5.4.0-1087.91","5.4.0-1088.92","5.4.0-1089.93","5.4.0-1090.94","5.4.0-1091.95","5.4.0-1092.96","5.4.0-1093.97","5.4.0-1094.98","5.4.0-1095.99","5.4.0-1096.100","5.4.0-1097.101","5.4.0-1098.102","5.4.0-1099.103","5.4.0-1100.104","5.4.0-1101.105","5.4.0-1102.106"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-gkeop-5.15","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.0-1003.5~20.04.2","5.15.0-1005.7~20.04.1","5.15.0-1007.10~20.04.1","5.15.0-1008.12~20.04.1","5.15.0-1011.15~20.04.2","5.15.0-1012.16~20.04.1","5.15.0-1013.17~20.04.1","5.15.0-1015.19~20.04.1","5.15.0-1016.21~20.04.1","5.15.0-1017.22~20.04.1","5.15.0-1018.23~20.04.1","5.15.0-1019.24~20.04.1","5.15.0-1020.25~20.04.1","5.15.0-1021.26~20.04.1","5.15.0-1022.27~20.04.1","5.15.0-1023.28~20.04.1","5.15.0-1024.29~20.04.1","5.15.0-1025.30~20.04.1","5.15.0-1026.31~20.04.1","5.15.0-1027.32~20.04.1","5.15.0-1028.33~20.04.1","5.15.0-1030.35~20.04.1","5.15.0-1031.37~20.04.1","5.15.0-1032.38~20.04.1","5.15.0-1033.39~20.04.1","5.15.0-1034.40~20.04.1","5.15.0-1035.41~20.04.1","5.15.0-1036.42~20.04.1","5.15.0-1037.43~20.04.1","5.15.0-1038.44~20.04.1","5.15.0-1039.45~20.04.1","5.15.0-1040.46~20.04.1","5.15.0-1043.50~20.04.1","5.15.0-1044.51~20.04.1","5.15.0-1045.52~20.04.1","5.15.0-1046.53~20.04.1","5.15.0-1047.54~20.04.1","5.15.0-1048.55~20.04.1","5.15.0-1049.56~20.04.1","5.15.0-1050.57~20.04.1","5.15.0-1051.58~20.04.1","5.15.0-1052.59~20.04.1","5.15.0-1053.60~20.04.1","5.15.0-1054.61~20.04.1","5.15.0-1055.62~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-hwe-5.11","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.11.0-22.23~20.04.1","5.11.0-25.27~20.04.1","5.11.0-27.29~20.04.1","5.11.0-34.36~20.04.1","5.11.0-36.40~20.04.1","5.11.0-37.41~20.04.2","5.11.0-38.42~20.04.1","5.11.0-40.44~20.04.2","5.11.0-41.45~20.04.1","5.11.0-43.47~20.04.2","5.11.0-44.48~20.04.2","5.11.0-46.51~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-hwe-5.13","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.13.0-21.21~20.04.1","5.13.0-22.22~20.04.1","5.13.0-23.23~20.04.2","5.13.0-25.26~20.04.1","5.13.0-27.29~20.04.1","5.13.0-28.31~20.04.1","5.13.0-30.33~20.04.1","5.13.0-35.40~20.04.1","5.13.0-37.42~20.04.1","5.13.0-39.44~20.04.1","5.13.0-40.45~20.04.1","5.13.0-41.46~20.04.1","5.13.0-44.49~20.04.1","5.13.0-48.54~20.04.1","5.13.0-51.58~20.04.1","5.13.0-52.59~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-hwe-5.8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.8.0-23.24~20.04.1","5.8.0-25.26~20.04.1","5.8.0-28.30~20.04.1","5.8.0-29.31~20.04.1","5.8.0-31.33~20.04.1","5.8.0-33.36~20.04.1","5.8.0-34.37~20.04.2","5.8.0-36.40~20.04.1","5.8.0-38.43~20.04.1","5.8.0-40.45~20.04.1","5.8.0-41.46~20.04.1","5.8.0-43.49~20.04.1","5.8.0-44.50~20.04.1","5.8.0-45.51~20.04.1","5.8.0-48.54~20.04.1","5.8.0-49.55~20.04.1","5.8.0-50.56~20.04.1","5.8.0-53.60~20.04.1","5.8.0-55.62~20.04.1","5.8.0-59.66~20.04.1","5.8.0-63.71~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-intel-5.13","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.13.0-1007.7","5.13.0-1008.8","5.13.0-1009.9","5.13.0-1010.10","5.13.0-1011.11","5.13.0-1014.15","5.13.0-1017.19"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-oem-5.10","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.10.0-1008.9","5.10.0-1011.12","5.10.0-1013.14","5.10.0-1014.15","5.10.0-1016.17","5.10.0-1017.18","5.10.0-1019.20","5.10.0-1021.22","5.10.0-1022.23","5.10.0-1023.24","5.10.0-1025.26","5.10.0-1026.27","5.10.0-1029.30","5.10.0-1032.33","5.10.0-1033.34","5.10.0-1034.35","5.10.0-1038.40","5.10.0-1044.46","5.10.0-1045.47","5.10.0-1049.51","5.10.0-1050.52","5.10.0-1051.53","5.10.0-1052.54","5.10.0-1053.55","5.10.0-1055.58","5.10.0-1057.61"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-oem-5.13","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.13.0-1009.10","5.13.0-1010.11","5.13.0-1012.16","5.13.0-1014.18","5.13.0-1017.21","5.13.0-1019.23","5.13.0-1020.24","5.13.0-1021.25","5.13.0-1022.26","5.13.0-1026.32","5.13.0-1028.35","5.13.0-1029.36"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-oem-5.14","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.14.0-1004.4","5.14.0-1005.5","5.14.0-1007.7","5.14.0-1008.8","5.14.0-1010.10","5.14.0-1011.11","5.14.0-1013.13","5.14.0-1018.19","5.14.0-1020.22","5.14.0-1022.24","5.14.0-1024.26","5.14.0-1027.30","5.14.0-1029.32","5.14.0-1031.34","5.14.0-1032.35","5.14.0-1033.36","5.14.0-1034.37","5.14.0-1036.40","5.14.0-1038.42","5.14.0-1042.47","5.14.0-1044.49","5.14.0-1045.51","5.14.0-1046.53","5.14.0-1047.54","5.14.0-1048.55","5.14.0-1049.56","5.14.0-1050.57","5.14.0-1051.58","5.14.0-1052.59","5.14.0-1054.61","5.14.0-1055.62","5.14.0-1056.63","5.14.0-1057.64","5.14.0-1058.66","5.14.0-1059.67"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-oem-5.6","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.6.0-1007.7","5.6.0-1008.8","5.6.0-1010.10","5.6.0-1011.11","5.6.0-1013.13","5.6.0-1017.17","5.6.0-1018.18","5.6.0-1020.20","5.6.0-1021.21","5.6.0-1023.23","5.6.0-1026.26","5.6.0-1027.27","5.6.0-1028.28","5.6.0-1031.32","5.6.0-1032.33","5.6.0-1033.35","5.6.0-1034.36","5.6.0-1035.37","5.6.0-1036.39","5.6.0-1039.43","5.6.0-1042.46","5.6.0-1047.51","5.6.0-1048.52","5.6.0-1050.54","5.6.0-1052.56","5.6.0-1053.57","5.6.0-1054.58","5.6.0-1055.59","5.6.0-1056.60"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-oracle-5.11","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.11.0-1008.8~20.04.1","5.11.0-1013.14~20.04.1","5.11.0-1016.17~20.04.1","5.11.0-1017.18~20.04.1","5.11.0-1019.20~20.04.1","5.11.0-1020.21~20.04.1","5.11.0-1021.22~20.04.1","5.11.0-1022.23~20.04.1","5.11.0-1023.24~20.04.1","5.11.0-1025.27~20.04.1","5.11.0-1027.30~20.04.1","5.11.0-1028.31~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-oracle-5.13","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.13.0-1011.13~20.04.2","5.13.0-1015.19~20.04.1","5.13.0-1016.20~20.04.1","5.13.0-1018.22~20.04.1","5.13.0-1021.26~20.04.1","5.13.0-1025.30~20.04.1","5.13.0-1027.32~20.04.1","5.13.0-1028.33~20.04.1","5.13.0-1030.35~20.04.1","5.13.0-1033.39~20.04.1","5.13.0-1034.40~20.04.1","5.13.0-1036.43~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-oracle-5.8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.8.0-1031.32~20.04.2","5.8.0-1033.34~20.04.1","5.8.0-1034.35~20.04.2","5.8.0-1037.38~20.04.1","5.8.0-1038.39~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-raspi2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.3.0-1007.8","5.3.0-1014.16","5.3.0-1015.17","5.3.0-1017.19","5.4.0-1004.4","5.4.0-1006.6"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-riscv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4.0-24.28","5.4.0-26.30","5.4.0-27.31","5.4.0-28.32","5.4.0-30.34","5.4.0-31.35","5.4.0-33.37","5.4.0-34.38","5.4.0-36.41","5.4.0-37.42","5.4.0-39.44","5.4.0-40.45"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-riscv-5.11","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.11.0-1015.16~20.04.1","5.11.0-1017.18~20.04.1","5.11.0-1018.19~20.04.2","5.11.0-1020.21~20.04.1","5.11.0-1021.22~20.04.1","5.11.0-1022.23~20.04.1","5.11.0-1023.24~20.04.1","5.11.0-1024.25~20.04.1","5.11.0-1026.28~20.04.1","5.11.0-1028.31~20.04.1","5.11.0-1029.32~20.04.1","5.11.0-1030.34","5.11.0-1031.35"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-riscv-5.8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.8.0-14.16~20.04.1","5.8.0-14.16~20.04.3","5.8.0-16.18~20.04.1","5.8.0-17.19~20.04.1","5.8.0-18.20~20.04.1","5.8.0-20.22~20.04.1","5.8.0-22.24~20.04.1","5.8.0-25.27~20.04.1","5.8.0-26.28~20.04.1","5.8.0-29.31~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-allwinner-5.19","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.19.0-1007.7~22.04.1","5.19.0-1009.9~22.04.1","5.19.0-1010.10~22.04.1","5.19.0-1011.11~22.04.1","5.19.0-1012.12~22.04.1","5.19.0-1013.13~22.04.1","5.19.0-1014.14~22.04.1","5.19.0-1015.15~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-aws-5.19","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.19.0-1019.20~22.04.1","5.19.0-1020.21~22.04.1","5.19.0-1022.23~22.04.1","5.19.0-1023.24~22.04.1","5.19.0-1024.25~22.04.1","5.19.0-1025.26~22.04.1","5.19.0-1026.27~22.04.1","5.19.0-1027.28~22.04.1","5.19.0-1028.29~22.04.1","5.19.0-1029.30~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-aws-6.2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.0-1005.5~22.04.1","6.2.0-1006.6~22.04.1","6.2.0-1007.7~22.04.1","6.2.0-1008.8~22.04.1","6.2.0-1009.9~22.04.3","6.2.0-1010.10~22.04.1","6.2.0-1011.11~22.04.1","6.2.0-1012.12~22.04.1","6.2.0-1013.13~22.04.1","6.2.0-1014.14~22.04.1","6.2.0-1015.15~22.04.1","6.2.0-1016.16~22.04.1","6.2.0-1017.17~22.04.1","6.2.0-1018.18~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-aws-6.5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.5.0-1008.8~22.04.1","6.5.0-1010.10~22.04.1","6.5.0-1011.11~22.04.1","6.5.0-1012.12~22.04.1","6.5.0-1014.14~22.04.1","6.5.0-1015.15~22.04.1","6.5.0-1016.16~22.04.1","6.5.0-1017.17~22.04.2","6.5.0-1018.18~22.04.1","6.5.0-1020.20~22.04.1","6.5.0-1021.21~22.04.1","6.5.0-1022.22~22.04.1","6.5.0-1023.23~22.04.1","6.5.0-1024.24~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-azure-5.19","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.19.0-1020.21~22.04.1","5.19.0-1021.22~22.04.1","5.19.0-1022.23~22.04.1","5.19.0-1023.24~22.04.1","5.19.0-1025.28~22.04.1","5.19.0-1026.29~22.04.1","5.19.0-1027.30~22.04.2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-azure-6.2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.0-1005.5~22.04.1","6.2.0-1006.6~22.04.1","6.2.0-1007.7~22.04.1","6.2.0-1008.8~22.04.1","6.2.0-1009.9~22.04.3","6.2.0-1011.11~22.04.1","6.2.0-1012.12~22.04.1","6.2.0-1014.14~22.04.1","6.2.0-1015.15~22.04.1","6.2.0-1016.16~22.04.1","6.2.0-1017.17~22.04.1","6.2.0-1018.18~22.04.1","6.2.0-1019.19~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-azure-6.5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.5.0-1007.7~22.04.1","6.5.0-1009.9~22.04.1","6.5.0-1010.10~22.04.1","6.5.0-1011.11~22.04.1","6.5.0-1015.15~22.04.1","6.5.0-1016.16~22.04.1","6.5.0-1017.17~22.04.1","6.5.0-1018.19~22.04.2","6.5.0-1019.20~22.04.1","6.5.0-1021.22~22.04.1","6.5.0-1022.23~22.04.1","6.5.0-1023.24~22.04.1","6.5.0-1024.25~22.04.1","6.5.0-1025.26~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-azure-fde-5.19","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.19.0-1025.28~22.04.1.1","5.19.0-1026.29~22.04.1.1","5.19.0-1027.30~22.04.2.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-azure-fde-6.2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.0-1008.8~22.04.1.1","6.2.0-1009.9~22.04.3.1","6.2.0-1011.11~22.04.1.1","6.2.0-1012.12~22.04.1.1","6.2.0-1014.14~22.04.1.1","6.2.0-1015.15~22.04.1.1","6.2.0-1016.16~22.04.1.1","6.2.0-1017.17~22.04.1.1","6.2.0-1018.18~22.04.1.1","6.2.0-1019.19~22.04.1.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-gcp-5.19","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.19.0-1020.22~22.04.2","5.19.0-1021.23~22.04.1","5.19.0-1022.24~22.04.1","5.19.0-1024.26~22.04.1","5.19.0-1025.27~22.04.1","5.19.0-1026.28~22.04.1","5.19.0-1027.29~22.04.1","5.19.0-1030.32~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-gcp-6.2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.0-1009.9~22.04.3","6.2.0-1010.10~22.04.1","6.2.0-1011.11~22.04.1","6.2.0-1011.11~22.04.3","6.2.0-1012.12~22.04.1","6.2.0-1013.13~22.04.1","6.2.0-1014.14~22.04.1","6.2.0-1016.18~22.04.1","6.2.0-1017.19~22.04.1","6.2.0-1018.20~22.04.1","6.2.0-1019.21~22.04.1","6.2.0-1021.23~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-gcp-6.5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.5.0-1010.10~22.04.3","6.5.0-1011.11~22.04.1","6.5.0-1013.13~22.04.1","6.5.0-1014.14~22.04.1","6.5.0-1015.15~22.04.1","6.5.0-1016.16~22.04.1","6.5.0-1017.17~22.04.1","6.5.0-1018.18~22.04.1","6.5.0-1020.20~22.04.1","6.5.0-1022.24~22.04.1","6.5.0-1023.25~22.04.1","6.5.0-1024.26~22.04.1","6.5.0-1025.27~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-hwe-5.19","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.19.0-28.29~22.04.1","5.19.0-32.33~22.04.1","5.19.0-35.36~22.04.1","5.19.0-38.39~22.04.1","5.19.0-40.41~22.04.1","5.19.0-41.42~22.04.1","5.19.0-42.43~22.04.1","5.19.0-43.44~22.04.1","5.19.0-45.46~22.04.1","5.19.0-46.47~22.04.1","5.19.0-50.50"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-hwe-6.2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.0-25.25~22.04.2","6.2.0-26.26~22.04.1","6.2.0-31.31~22.04.1","6.2.0-32.32~22.04.1","6.2.0-33.33~22.04.1","6.2.0-34.34~22.04.1","6.2.0-35.35~22.04.1","6.2.0-36.37~22.04.1","6.2.0-37.38~22.04.1","6.2.0-39.40~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-hwe-6.5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.5.0-14.14~22.04.1","6.5.0-15.15~22.04.1","6.5.0-17.17~22.04.1","6.5.0-18.18~22.04.1","6.5.0-21.21~22.04.1","6.5.0-25.25~22.04.1","6.5.0-26.26~22.04.1","6.5.0-27.28~22.04.1","6.5.0-28.29~22.04.1","6.5.0-35.35~22.04.1","6.5.0-41.41~22.04.2","6.5.0-44.44~22.04.1","6.5.0-45.45~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-intel-iot-realtime","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.0-1073.75"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-lowlatency-hwe-5.19","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.19.0-1017.18~22.04.1","5.19.0-1018.19~22.04.1","5.19.0-1021.22~22.04.1","5.19.0-1022.23~22.04.1","5.19.0-1023.24~22.04.1","5.19.0-1024.25~22.04.1","5.19.0-1025.26~22.04.1","5.19.0-1027.28~22.04.1","5.19.0-1028.29~22.04.1","5.19.0-1030.30"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-lowlatency-hwe-6.2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.0-1008.8~22.04.1","6.2.0-1009.9~22.04.1","6.2.0-1011.11~22.04.1","6.2.0-1012.12~22.04.1","6.2.0-1013.13~22.04.1","6.2.0-1014.14~22.04.1","6.2.0-1015.15~22.04.1","6.2.0-1016.16~22.04.1","6.2.0-1017.17~22.04.1","6.2.0-1018.18~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-lowlatency-hwe-6.5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.5.0-14.14.1~22.04.1","6.5.0-15.15.1.1~22.04.1","6.5.0-17.17.1.1.1~22.04.1","6.5.0-21.21.1~22.04.1","6.5.0-25.25.1~22.04.1","6.5.0-26.26.1~22.04.1","6.5.0-27.28.1~22.04.1","6.5.0-28.29.1~22.04.1","6.5.0-35.35.1~22.04.1","6.5.0-41.41.1~22.04.1","6.5.0-42.42.1~22.04.1","6.5.0-44.44.1~22.04.1","6.5.0-45.45.1~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-nvidia-6.2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.0-1003.3~22.04.1","6.2.0-1009.9","6.2.0-1010.10","6.2.0-1011.11","6.2.0-1012.12","6.2.0-1013.13","6.2.0-1015.15"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-nvidia-6.5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.5.0-1004.4","6.5.0-1007.7","6.5.0-1013.13","6.5.0-1014.14","6.5.0-1015.15","6.5.0-1018.18","6.5.0-1019.19","6.5.0-1021.22","6.5.0-1022.23","6.5.0-1023.24","6.5.0-1024.25"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-oem-5.17","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.17.0-1003.3","5.17.0-1004.4","5.17.0-1006.6","5.17.0-1011.12","5.17.0-1012.13","5.17.0-1013.14","5.17.0-1014.15","5.17.0-1015.16","5.17.0-1016.17","5.17.0-1017.18","5.17.0-1018.19","5.17.0-1019.20","5.17.0-1020.21","5.17.0-1021.22","5.17.0-1024.25","5.17.0-1025.26","5.17.0-1026.27","5.17.0-1027.28","5.17.0-1028.29","5.17.0-1029.30","5.17.0-1030.31","5.17.0-1031.32","5.17.0-1032.33","5.17.0-1033.34","5.17.0-1034.35","5.17.0-1035.36"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-oem-6.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.0.0-1006.6","6.0.0-1007.7","6.0.0-1008.8","6.0.0-1009.9","6.0.0-1010.10","6.0.0-1011.11","6.0.0-1012.12","6.0.0-1013.13","6.0.0-1014.14","6.0.0-1015.15","6.0.0-1016.16","6.0.0-1017.17","6.0.0-1018.18","6.0.0-1019.19","6.0.0-1020.20","6.0.0-1021.21"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-oem-6.1","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.1.0-1004.4","6.1.0-1006.6","6.1.0-1007.7","6.1.0-1008.8","6.1.0-1009.9","6.1.0-1010.10","6.1.0-1012.12","6.1.0-1013.13","6.1.0-1014.14","6.1.0-1015.15","6.1.0-1016.16","6.1.0-1017.17","6.1.0-1019.19","6.1.0-1020.20","6.1.0-1021.21","6.1.0-1022.22","6.1.0-1023.23","6.1.0-1024.24","6.1.0-1025.25","6.1.0-1026.26","6.1.0-1027.27","6.1.0-1028.28","6.1.0-1029.29","6.1.0-1033.33","6.1.0-1034.34","6.1.0-1035.35","6.1.0-1036.36"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-oem-6.5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.5.0-1003.3","6.5.0-1004.4","6.5.0-1006.6","6.5.0-1007.7","6.5.0-1008.8","6.5.0-1009.10","6.5.0-1011.12","6.5.0-1013.14","6.5.0-1014.15","6.5.0-1015.16","6.5.0-1016.17","6.5.0-1018.19","6.5.0-1019.20","6.5.0-1020.21","6.5.0-1022.23","6.5.0-1023.24","6.5.0-1024.25","6.5.0-1025.26","6.5.0-1027.28"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-oracle-6.5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.5.0-1013.13~22.04.4","6.5.0-1014.14~22.04.1","6.5.0-1015.15~22.04.1","6.5.0-1016.16~22.04.1","6.5.0-1018.18~22.04.1","6.5.0-1019.19~22.04.1","6.5.0-1020.20~22.04.1","6.5.0-1021.21~22.04.1","6.5.0-1023.23~22.04.1","6.5.0-1024.24~22.04.1","6.5.0-1025.25~22.04.1","6.5.0-1026.26~22.04.1","6.5.0-1027.27~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-realtime","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.0-1032.35"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-riscv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.13.0-1004.4","5.13.0-1006.6+22.04.1","5.13.0-1007.7+22.04.1","5.13.0-1010.11+22.04.1","5.15.0-1004.4","5.15.0-1005.5","5.15.0-1006.6","5.15.0-1007.7","5.15.0-1008.8","5.15.0-1011.12","5.15.0-1012.13","5.15.0-1014.16","5.15.0-1015.17","5.15.0-1016.18","5.15.0-1017.19","5.15.0-1018.21","5.15.0-1019.22","5.15.0-1020.23","5.15.0-1022.26","5.15.0-1023.27","5.15.0-1026.30","5.15.0-1027.31","5.15.0-1028.32"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-riscv-5.19","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.19.0-1012.13~22.04.1","5.19.0-1015.16~22.04.1","5.19.0-1016.17~22.04.1","5.19.0-1017.18~22.04.1","5.19.0-1018.19~22.04.1","5.19.0-1019.21~22.04.1","5.19.0-1020.22~22.04.1","5.19.0-1021.23~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-riscv-6.5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.5.0-17.17.1.1~22.04.1","6.5.0-21.21.1~22.04.1","6.5.0-25.25.1~22.04.1","6.5.0-26.26.1~22.04.1","6.5.0-27.28.1~22.04.1","6.5.0-28.29.1~22.04.1","6.5.0-35.35.1~22.04.1","6.5.0-40.40.1~22.04.1","6.5.0-42.42.1~22.04.1","6.5.0-45.45.1~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-starfive-5.19","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.19.0-1014.16~22.04.1","5.19.0-1015.17~22.04.1","5.19.0-1016.18~22.04.1","5.19.0-1017.19~22.04.1","5.19.0-1018.20~22.04.1","5.19.0-1019.21~22.04.1","5.19.0-1020.22~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-starfive-6.2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.0-1006.7~22.04.1","6.2.0-1007.8~22.04.1","6.2.0-1009.10~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-starfive-6.5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.5.0-1007.8~22.04.1","6.5.0-1008.9~22.04.1","6.5.0-1009.10~22.04.1","6.5.0-1010.11~22.04.1","6.5.0-1011.12~22.04.1","6.5.0-1012.13~22.04.1","6.5.0-1014.15~22.04.1","6.5.0-1015.16~22.04.1","6.5.0-1016.17~22.04.1","6.5.0-1017.18~22.04.1","6.5.0-1018.19~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-azure-6.11","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.11.0-1008.8~24.04.1","6.11.0-1012.12~24.04.1","6.11.0-1013.13~24.04.1","6.11.0-1014.14~24.04.1","6.11.0-1015.15~24.04.1","6.11.0-1017.17~24.04.1","6.11.0-1018.18~24.04.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-gcp-6.11","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.11.0-1006.6~24.04.2","6.11.0-1011.11~24.04.1","6.11.0-1013.13~24.04.1","6.11.0-1014.14~24.04.1","6.11.0-1015.15~24.04.1","6.11.0-1016.16~24.04.1","6.11.0-1017.17~24.04.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-hwe-6.11","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.11.0-17.17~24.04.2","6.11.0-19.19~24.04.1","6.11.0-21.21~24.04.1","6.11.0-24.24~24.04.1","6.11.0-25.25~24.04.1","6.11.0-26.26~24.04.1","6.11.0-28.28~24.04.1","6.11.0-29.29~24.04.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-intel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-1005.12","6.8.0-1006.13","6.8.0-1007.14"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-lowlatency-hwe-6.11","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.11.0-1009.10~24.04.1","6.11.0-1011.12~24.04.1","6.11.0-1012.13~24.04.1","6.11.0-1013.14~24.04.1","6.11.0-1014.15~24.04.1","6.11.0-1015.16~24.04.2","6.11.0-1016.17~24.04.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-oem-6.11","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.11.0-1007.7","6.11.0-1008.8","6.11.0-1009.9","6.11.0-1010.10","6.11.0-1011.11","6.11.0-1012.12","6.11.0-1013.13","6.11.0-1015.15","6.11.0-1016.16","6.11.0-1017.17","6.11.0-1018.18","6.11.0-1020.20","6.11.0-1021.21","6.11.0-1022.22","6.11.0-1023.23","6.11.0-1024.24","6.11.0-1025.25","6.11.0-1027.27"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-oem-6.8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-1003.3","6.8.0-1004.4","6.8.0-1005.5","6.8.0-1006.6","6.8.0-1007.7","6.8.0-1008.8","6.8.0-1009.9","6.8.0-1010.10","6.8.0-1011.11","6.8.0-1012.12","6.8.0-1013.13","6.8.0-1014.14","6.8.0-1016.16","6.8.0-1017.17","6.8.0-1018.18","6.8.0-1019.19","6.8.0-1020.20","6.8.0-1024.24","6.8.0-1025.25","6.8.0-1026.26","6.8.0-1027.27","6.8.0-1028.28","6.8.0-1029.29","6.8.0-1030.30","6.8.0-1031.31","6.8.0-1032.32"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-raspi-realtime","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-2019.20"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-realtime","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.1-1015.16"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-riscv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.5.0-9.9.1","6.8.0-20.20.1","6.8.0-28.28.1","6.8.0-31.31.1","6.8.0-35.35.1","6.8.0-36.36.1","6.8.0-38.38.1","6.8.0-39.39.1","6.8.0-40.40.1","6.8.0-41.41.1","6.8.0-44.44.1","6.8.0-47.47.1","6.8.0-48.48.1","6.8.0-49.49.1","6.8.0-50.51.1","6.8.0-51.52.1","6.8.0-52.53.1","6.8.0-53.55.1","6.8.0-55.57.1","6.8.0-56.58.1","6.8.0-57.59.1","6.8.0-58.60.1","6.8.0-59.61.1","6.8.0-60.63.1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"linux-azure-fde","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.17.0-1003.3","6.17.0-1004.4","6.17.0-1005.5","6.17.0-1007.7","6.17.0-1008.8","6.17.0-1010.10","6.17.0-1012.12","6.17.0-1014.14","6.17.0-1015.15","6.17.0-1017.17"]}],"products":[{"vendor":"linux","product":"linux"},{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"https://git.kernel.org/stable/c/d689135aa9c5e4e0eab5a92bbe35dab0c8d6677f","tags":["Patch","web","report"]},{"url":"https://git.kernel.org/stable/c/b64fdd422a85025b5e91ead794db9d3ef970e369","tags":["Patch","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-39821","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-cqwc-52gw-4x53"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2025-39821","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39821.json","tags":["advisory"]},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-39821","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-39821","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-39821","tags":["report"]},{"url":"https://git.kernel.org/linus/b64fdd422a85025b5e91ead794db9d3ef970e369","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2025-39821","title":"perf: Avoid undefined behavior from stopping/starting inactive events","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Avoid undefined behavior from stopping/starting inactive events\n\nCalling pmu-\u003estart()/stop() on perf events in PERF_EVENT_STATE_OFF can\nleave event-\u003ehw.idx at -1. When PMU drivers later attempt to use this\nnegative index as a shift exponent in bitwise operations, it leads to UBSAN\nshift-out-of-bounds reports.\n\nThe issue is a logical flaw in how event groups handle throttling when some\nmembers are intentionally disabled. Based on the analysis and the\nreproducer provided by Mark Rutland (this issue on both arm64 and x86-64).\n\nThe scenario unfolds as follows:\n\n 1. A group leader event is configured with a very aggressive sampling\n    period (e.g., sample_period = 1). This causes frequent interrupts and\n    triggers the throttling mechanism.\n 2. A child event in the same group is created in a disabled state\n    (.disabled = 1). This event remains in PERF_EVENT_STATE_OFF.\n    Since it hasn't been scheduled onto the PMU, its event-\u003ehw.idx remains\n    initialized at -1.\n 3. When throttling occurs, perf_event_throttle_group() and later\n    perf_event_unthrottle_group() iterate through all siblings, including\n    the disabled child event.\n 4. perf_event_throttle()/unthrottle() are called on this inactive child\n    event, which then call event-\u003epmu-\u003estart()/stop().\n 5. The PMU driver receives the event with hw.idx == -1 and attempts to\n    use it as a shift exponent. e.g., in macros like PMCNTENSET(idx),\n    leading to the UBSAN report.\n\nThe throttling mechanism attempts to start/stop events that are not\nactively scheduled on the hardware.\n\nMove the state check into perf_event_throttle()/perf_event_unthrottle() so\nthat inactive events are skipped entirely. This ensures only active events\nwith a valid hw.idx are processed, preventing undefined behavior and\nsilencing UBSAN warnings. The corrected check ensures true before\nproceeding with PMU operations.\n\nThe problem can be reproduced with the syzkaller reproducer:","status":"published","published":"2025-09-16T13:00:20.805Z","modified":"2026-08-05T12:05:25.973Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:32:50.520421Z"}],"euvd":[{"id":"EUVD-2025-29593","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Avoid undefined behavior from stopping/starting inactive events\n\nCalling pmu-\u003estart()/stop() on perf events in PERF_EVENT_STATE_OFF can\nleave event-\u003ehw.idx at -1. When PMU drivers later attempt to use this\nnegative index as a shift exponent in bitwise operations, it leads to UBSAN\nshift-out-of-bounds reports.\n\nThe issue is a logical flaw in how event groups handle throttling when some\nmembers are intentionally disabled. Based on the analysis and the\nreproducer provided by Mark Rutland (this issue on both arm64 and x86-64).\n\nThe scenario unfolds as follows:\n\n 1. A group leader event is configured with a very aggressive sampling\n    period (e.g., sample_period = 1). This causes frequent interrupts and\n    triggers the throttling mechanism.\n 2. A child event in the same group is created in a disabled state\n    (.disabled = 1). This event remains in PERF_EVENT_STATE_OFF.\n    Since it hasn't been scheduled onto the PMU, its event-\u003ehw.idx remains\n    initialized at -1.\n 3. When throttling occurs, perf_event_throttle_group() and later\n    perf_event_unthrottle_group() iterate through all siblings, including\n    the disabled child event.\n 4. perf_event_throttle()/unthrottle() are called on this inactive child\n    event, which then call event-\u003epmu-\u003estart()/stop().\n 5. The PMU driver receives the event with hw.idx == -1 and attempts to\n    use it as a shift exponent. e.g., in macros like PMCNTENSET(idx),\n    leading to the UBSAN report.\n\nThe throttling mechanism attempts to start/stop events that are not\nactively scheduled on the hardware.\n\nMove the state check into perf_event_throttle()/perf_event_unthrottle() so\nthat inactive events are skipped entirely. This ensures only active events\nwith a valid hw.idx are processed, preventing undefined behavior and\nsilencing UBSAN warnings. The corrected check ensures true before\nproceeding with PMU operations.\n\nThe problem can be reproduced with the syzkaller reproducer:","status":"published","published":"2025-09-16T13:00:20Z","modified":"2026-08-05T12:05:25Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:02:13.097582Z"}],"ghsa":[{"id":"GHSA-cqwc-52gw-4x53","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Avoid undefined...","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Avoid undefined behavior from stopping/starting inactive events\n\nCalling pmu-\u003estart()/stop() on perf events in PERF_EVENT_STATE_OFF can\nleave event-\u003ehw.idx at -1. When PMU drivers later attempt to use this\nnegative index as a shift exponent in bitwise operations, it leads to UBSAN\nshift-out-of-bounds reports.\n\nThe issue is a logical flaw in how event groups handle throttling when some\nmembers are intentionally disabled. Based on the analysis and the\nreproducer provided by Mark Rutland (this issue on both arm64 and x86-64).\n\nThe scenario unfolds as follows:\n\n 1. A group leader event is configured with a very aggressive sampling\n    period (e.g., sample_period = 1). This causes frequent interrupts and\n    triggers the throttling mechanism.\n 2. A child event in the same group is created in a disabled state\n    (.disabled = 1). This event remains in PERF_EVENT_STATE_OFF.\n    Since it hasn't been scheduled onto the PMU, its event-\u003ehw.idx remains\n    initialized at -1.\n 3. When throttling occurs, perf_event_throttle_group() and later\n    perf_event_unthrottle_group() iterate through all siblings, including\n    the disabled child event.\n 4. perf_event_throttle()/unthrottle() are called on this inactive child\n    event, which then call event-\u003epmu-\u003estart()/stop().\n 5. The PMU driver receives the event with hw.idx == -1 and attempts to\n    use it as a shift exponent. e.g., in macros like PMCNTENSET(idx),\n    leading to the UBSAN report.\n\nThe throttling mechanism attempts to start/stop events that are not\nactively scheduled on the hardware.\n\nMove the state check into perf_event_throttle()/perf_event_unthrottle() so\nthat inactive events are skipped entirely. This ensures only active events\nwith a valid hw.idx are processed, preventing undefined behavior and\nsilencing UBSAN warnings. The corrected check ensures true before\nproceeding with PMU operations.\n\nThe problem can be reproduced with the syzkaller reproducer:","status":"published","published":"2025-09-16T15:32:35Z","modified":"2025-12-02T21:32:34Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T15:05:00.770101Z"}],"nvd":[{"id":"CVE-2025-39821","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Avoid undefined behavior from stopping/starting inactive events\n\nCalling pmu-\u003estart()/stop() on perf events in PERF_EVENT_STATE_OFF can\nleave event-\u003ehw.idx at -1. When PMU drivers later attempt to use this\nnegative index as a shift exponent in bitwise operations, it leads to UBSAN\nshift-out-of-bounds reports.\n\nThe issue is a logical flaw in how event groups handle throttling when some\nmembers are intentionally disabled. Based on the analysis and the\nreproducer provided by Mark Rutland (this issue on both arm64 and x86-64).\n\nThe scenario unfolds as follows:\n\n 1. A group leader event is configured with a very aggressive sampling\n    period (e.g., sample_period = 1). This causes frequent interrupts and\n    triggers the throttling mechanism.\n 2. A child event in the same group is created in a disabled state\n    (.disabled = 1). This event remains in PERF_EVENT_STATE_OFF.\n    Since it hasn't been scheduled onto the PMU, its event-\u003ehw.idx remains\n    initialized at -1.\n 3. When throttling occurs, perf_event_throttle_group() and later\n    perf_event_unthrottle_group() iterate through all siblings, including\n    the disabled child event.\n 4. perf_event_throttle()/unthrottle() are called on this inactive child\n    event, which then call event-\u003epmu-\u003estart()/stop().\n 5. The PMU driver receives the event with hw.idx == -1 and attempts to\n    use it as a shift exponent. e.g., in macros like PMCNTENSET(idx),\n    leading to the UBSAN report.\n\nThe throttling mechanism attempts to start/stop events that are not\nactively scheduled on the hardware.\n\nMove the state check into perf_event_throttle()/perf_event_unthrottle() so\nthat inactive events are skipped entirely. This ensures only active events\nwith a valid hw.idx are processed, preventing undefined behavior and\nsilencing UBSAN warnings. The corrected check ensures true before\nproceeding with PMU operations.\n\nThe problem can be reproduced with the syzkaller reproducer:","status":"published","published":"2025-09-16T13:15:59.3Z","modified":"2026-10-19T21:10:00.16Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:11:29.650057Z"}],"osv":[{"id":"BELL-CVE-2025-39821","status":"published","published":"2025-09-17T06:04:36.631263Z","modified":"2026-06-25T07:18:30.159827245Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:28:22.246535Z"},{"id":"CVE-2025-39821","title":"perf: Avoid undefined behavior from stopping/starting inactive events","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Avoid undefined behavior from stopping/starting inactive events\n\nCalling pmu-\u003estart()/stop() on perf events in PERF_EVENT_STATE_OFF can\nleave event-\u003ehw.idx at -1. When PMU drivers later attempt to use this\nnegative index as a shift exponent in bitwise operations, it leads to UBSAN\nshift-out-of-bounds reports.\n\nThe issue is a logical flaw in how event groups handle throttling when some\nmembers are intentionally disabled. Based on the analysis and the\nreproducer provided by Mark Rutland (this issue on both arm64 and x86-64).\n\nThe scenario unfolds as follows:\n\n 1. A group leader event is configured with a very aggressive sampling\n    period (e.g., sample_period = 1). This causes frequent interrupts and\n    triggers the throttling mechanism.\n 2. A child event in the same group is created in a disabled state\n    (.disabled = 1). This event remains in PERF_EVENT_STATE_OFF.\n    Since it hasn't been scheduled onto the PMU, its event-\u003ehw.idx remains\n    initialized at -1.\n 3. When throttling occurs, perf_event_throttle_group() and later\n    perf_event_unthrottle_group() iterate through all siblings, including\n    the disabled child event.\n 4. perf_event_throttle()/unthrottle() are called on this inactive child\n    event, which then call event-\u003epmu-\u003estart()/stop().\n 5. The PMU driver receives the event with hw.idx == -1 and attempts to\n    use it as a shift exponent. e.g., in macros like PMCNTENSET(idx),\n    leading to the UBSAN report.\n\nThe throttling mechanism attempts to start/stop events that are not\nactively scheduled on the hardware.\n\nMove the state check into perf_event_throttle()/perf_event_unthrottle() so\nthat inactive events are skipped entirely. This ensures only active events\nwith a valid hw.idx are processed, preventing undefined behavior and\nsilencing UBSAN warnings. The corrected check ensures true before\nproceeding with PMU operations.\n\nThe problem can be reproduced with the syzkaller reproducer:","status":"published","published":"2025-09-16T13:00:20.805Z","modified":"2026-10-28T02:30:35.083941145Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:49.052395Z"},{"id":"DEBIAN-CVE-2025-39821","description":"In the Linux kernel, the following vulnerability has been resolved:  perf: Avoid undefined behavior from stopping/starting inactive events  Calling pmu-\u003estart()/stop() on perf events in PERF_EVENT_STATE_OFF can leave event-\u003ehw.idx at -1. When PMU drivers later attempt to use this negative index as a shift exponent in bitwise operations, it leads to UBSAN shift-out-of-bounds reports.  The issue is a logical flaw in how event groups handle throttling when some members are intentionally disabled. Based on the analysis and the reproducer provided by Mark Rutland (this issue on both arm64 and x86-64).  The scenario unfolds as follows:   1. A group leader event is configured with a very aggressive sampling     period (e.g., sample_period = 1). This causes frequent interrupts and     triggers the throttling mechanism.  2. A child event in the same group is created in a disabled state     (.disabled = 1). This event remains in PERF_EVENT_STATE_OFF.     Since it hasn't been scheduled onto the PMU, its event-\u003ehw.idx remains     initialized at -1.  3. When throttling occurs, perf_event_throttle_group() and later     perf_event_unthrottle_group() iterate through all siblings, including     the disabled child event.  4. perf_event_throttle()/unthrottle() are called on this inactive child     event, which then call event-\u003epmu-\u003estart()/stop().  5. The PMU driver receives the event with hw.idx == -1 and attempts to     use it as a shift exponent. e.g., in macros like PMCNTENSET(idx),     leading to the UBSAN report.  The throttling mechanism attempts to start/stop events that are not actively scheduled on the hardware.  Move the state check into perf_event_throttle()/perf_event_unthrottle() so that inactive events are skipped entirely. This ensures only active events with a valid hw.idx are processed, preventing undefined behavior and silencing UBSAN warnings. The corrected check ensures true before proceeding with PMU operations.  The problem can be reproduced with the syzkaller reproducer:","status":"published","published":"2025-09-16T13:15:59.3Z","modified":"2026-10-23T18:04:34.63183845Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:46.626332Z"},{"id":"UBUNTU-CVE-2025-39821","description":"In the Linux kernel, the following vulnerability has been resolved: perf: Avoid undefined behavior from stopping/starting inactive events Calling pmu-\u003estart()/stop() on perf events in PERF_EVENT_STATE_OFF can leave event-\u003ehw.idx at -1. When PMU drivers later attempt to use this negative index as a shift exponent in bitwise operations, it leads to UBSAN shift-out-of-bounds reports. The issue is a logical flaw in how event groups handle throttling when some members are intentionally disabled. Based on the analysis and the reproducer provided by Mark Rutland (this issue on both arm64 and x86-64). The scenario unfolds as follows:  1. A group leader event is configured with a very aggressive sampling     period (e.g., sample_period = 1). This causes frequent interrupts and     triggers the throttling mechanism.  2. A child event in the same group is created in a disabled state     (.disabled = 1). This event remains in PERF_EVENT_STATE_OFF.     Since it hasn't been scheduled onto the PMU, its event-\u003ehw.idx remains     initialized at -1.  3. When throttling occurs, perf_event_throttle_group() and later     perf_event_unthrottle_group() iterate through all siblings, including     the disabled child event.  4. perf_event_throttle()/unthrottle() are called on this inactive child     event, which then call event-\u003epmu-\u003estart()/stop().  5. The PMU driver receives the event with hw.idx == -1 and attempts to     use it as a shift exponent. e.g., in macros like PMCNTENSET(idx),     leading to the UBSAN report. The throttling mechanism attempts to start/stop events that are not actively scheduled on the hardware. Move the state check into perf_event_throttle()/perf_event_unthrottle() so that inactive events are skipped entirely. This ensures only active events with a valid hw.idx are processed, preventing undefined behavior and silencing UBSAN warnings. The corrected check ensures true before proceeding with PMU operations. The problem can be reproduced with the syzkaller reproducer:","status":"published","published":"2025-09-16T13:15:00Z","modified":"2026-09-09T14:35:30.823108084Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:55:40.454384Z"}]}}