{"id":"CVE-2024-39560","aliases":["EUVD-2024-38086","GHSA-gc6q-hh4v-5gvq"],"status":"published","title":"Junos OS and Junos OS Evolved: Memory leak due to RSVP neighbor persistent error leading to kernel crash","description":"An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a logically adjacent downstream RSVP neighbor to cause kernel memory exhaustion, leading to a kernel crash, resulting in a Denial of Service (DoS).\n\nThe kernel memory leak and eventual crash will be seen when the downstream RSVP neighbor has a persistent error which will not be corrected.\n\nSystem kernel memory can be monitored through the use of the 'show system kernel memory' command as shown below:\n\nuser@router\u003e show system kernel memory    \nReal memory total/reserved: 4130268/ 133344 Kbytes\nkmem map free: 18014398509110220 Kbytes\n\nThis issue affects:\nJunos OS:\n\n\n  *  All versions before 20.4R3-S9,\n  *  All versions of 21.2,\n  *  from 21.4 before 21.4R3-S5,\n  *  from 22.1 before 22.1R3-S5,\n  *  from 22.2 before 22.2R3-S3,\n  *  from 22.3 before 22.3R3-S2,\n  *  from 22.4 before 22.4R3,\n  *  from 23.2 before 23.2R2;\n\n\nJunos OS Evolved:\n\n\n  *  All versions before 21.4R3-S5-EVO,\n  *  from 22.1-EVO before 22.1R3-S5-EVO, \n  *  from 22.2-EVO before 22.2R3-S3-EVO, \n  *  from 22.3-EVO before 22.3R3-S2-EVO, \n  *  from 22.4-EVO before 22.4R3-EVO, \n  *  from 23.2-EVO before 23.2R2-EVO.","severity":{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:A","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00246,"percentile":0.15999,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-755"],"published":"2024-07-10T22:44:55Z","modified":"2026-06-17T07:42:13Z","products":[{"vendor":"juniper","product":"junos"},{"vendor":"juniper","product":"junos_os_evolved"},{"vendor":"juniper networks","product":"junos os"},{"vendor":"juniper networks","product":"junos os evolved"}],"references":[{"url":"https://supportportal.juniper.net/JSA83020","tags":["vendor-advisory","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-39560"},{"url":"https://github.com/advisories/GHSA-gc6q-hh4v-5gvq"}],"sources":{"cve":[{"id":"CVE-2024-39560","title":"Junos OS and Junos OS Evolved: Memory leak due to RSVP neighbor persistent error leading to kernel crash","description":"An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a logically adjacent downstream RSVP neighbor to cause kernel memory exhaustion, leading to a kernel crash, resulting in a Denial of Service (DoS).\n\nThe kernel memory leak and eventual crash will be seen when the downstream RSVP neighbor has a persistent error which will not be corrected.\n\nSystem kernel memory can be monitored through the use of the 'show system kernel memory' command as shown below:\n\nuser@router\u003e show system kernel memory    \nReal memory total/reserved: 4130268/ 133344 Kbytes\nkmem map free: 18014398509110220 Kbytes\n\nThis issue affects:\nJunos OS:\n\n\n  *  All versions before 20.4R3-S9,\n  *  All versions of 21.2,\n  *  from 21.4 before 21.4R3-S5,\n  *  from 22.1 before 22.1R3-S5,\n  *  from 22.2 before 22.2R3-S3,\n  *  from 22.3 before 22.3R3-S2,\n  *  from 22.4 before 22.4R3,\n  *  from 23.2 before 23.2R2;\n\n\nJunos OS Evolved:\n\n\n  *  All versions before 21.4R3-S5-EVO,\n  *  from 22.1-EVO before 22.1R3-S5-EVO, \n  *  from 22.2-EVO before 22.2R3-S3-EVO, \n  *  from 22.3-EVO before 22.3R3-S2-EVO, \n  *  from 22.4-EVO before 22.4R3-EVO, \n  *  from 23.2-EVO before 23.2R2-EVO.","status":"published","published":"2024-07-10T22:44:55.736Z","modified":"2024-10-01T19:16:59.626Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:A","level":"high","assessor":"cna"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T14:34:19.28149Z"}],"euvd":[{"id":"EUVD-2024-38086","description":"An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a logically adjacent downstream RSVP neighbor to cause kernel memory exhaustion, leading to a kernel crash, resulting in a Denial of Service (DoS).\n\nThe kernel memory leak and eventual crash will be seen when the downstream RSVP neighbor has a persistent error which will not be corrected.\n\nSystem kernel memory can be monitored through the use of the 'show system kernel memory' command as shown below:\n\nuser@router\u003e show system kernel memory    \nReal memory total/reserved: 4130268/ 133344 Kbytes\nkmem map free: 18014398509110220 Kbytes\n\nThis issue affects:\nJunos OS:\n\n\n  *  All versions before 20.4R3-S9,\n  *  All versions of 21.2,\n  *  from 21.4 before 21.4R3-S5,\n  *  from 22.1 before 22.1R3-S5,\n  *  from 22.2 before 22.2R3-S3,\n  *  from 22.3 before 22.3R3-S2,\n  *  from 22.4 before 22.4R3,\n  *  from 23.2 before 23.2R2;\n\n\nJunos OS Evolved:\n\n\n  *  All versions before 21.4R3-S5-EVO,\n  *  from 22.1-EVO before 22.1R3-S5-EVO, \n  *  from 22.2-EVO before 22.2R3-S3-EVO, \n  *  from 22.3-EVO before 22.3R3-S2-EVO, \n  *  from 22.4-EVO before 22.4R3-EVO, \n  *  from 23.2-EVO before 23.2R2-EVO.","status":"published","published":"2024-07-10T22:44:55Z","modified":"2024-10-01T19:16:59Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:A","level":"high"}],"updated_at":"2026-11-03T00:27:59.918435Z"}],"ghsa":[{"id":"GHSA-gc6q-hh4v-5gvq","title":"An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd)...","description":"An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a logically adjacent downstream RSVP neighbor to cause kernel memory exhaustion, leading to a kernel crash, resulting in a Denial of Service (DoS).\n\nThe kernel memory leak and eventual crash will be seen when the downstream RSVP neighbor has a persistent error which will not be corrected.\n\nSystem kernel memory can be monitored through the use of the 'show system statistics kernel memory' command as shown below:\n\nuser@router\u003e show system statistics kernel memory\nMemory                 Size (kB)  Percentage  When\n  Active                  753092       18.4%  Now\n  Inactive                574300       14.0%  Now\n  Wired                  443236       10.8%  Now\n  Cached                1911204       46.6%  Now\n  Buf                      32768      0.8%  Now\n  Free                    385072      9.4%  Now\nKernel Memory                             Now\n  Data                    312908      7.6%  Now\n  Text                      2560      0.1%  Now\n...\n\nThis issue affects:\nJunos OS:\n\n\n  *  All versions before 20.4R3-S9,\n  *  from 21.4 before 21.4R3-S5,\n  *  from 22.1 before 22.1R3-S5,\n  *  from 22.2 before 22.2R3-S3,\n  *  from 22.3 before 22.3R3-S2,\n  *  from 22.4 before 22.4R3,\n  *  from 23.2 before 23.2R2;\n\n\nJunos OS Evolved:\n\n\n  *  All versions before 21.4R3-S5-EVO,\n  *  from 22.1-EVO before 22.1R3-S5-EVO, \n  *  from 22.2-EVO before 22.2R3-S3-EVO, \n  *  from 22.3-EVO before 22.3R3-S2-EVO, \n  *  from 22.4-EVO before 22.4R3-EVO, \n  *  from 23.2-EVO before 23.2R2-EVO.","status":"published","published":"2024-07-11T00:32:51Z","modified":"2024-07-31T05:02:58Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T14:57:45.165794Z"}],"nvd":[{"id":"CVE-2024-39560","description":"An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a logically adjacent downstream RSVP neighbor to cause kernel memory exhaustion, leading to a kernel crash, resulting in a Denial of Service (DoS).\n\nThe kernel memory leak and eventual crash will be seen when the downstream RSVP neighbor has a persistent error which will not be corrected.\n\nSystem kernel memory can be monitored through the use of the 'show system kernel memory' command as shown below:\n\nuser@router\u003e show system kernel memory    \nReal memory total/reserved: 4130268/ 133344 Kbytes\nkmem map free: 18014398509110220 Kbytes\n\nThis issue affects:\nJunos OS:\n\n\n  *  All versions before 20.4R3-S9,\n  *  All versions of 21.2,\n  *  from 21.4 before 21.4R3-S5,\n  *  from 22.1 before 22.1R3-S5,\n  *  from 22.2 before 22.2R3-S3,\n  *  from 22.3 before 22.3R3-S2,\n  *  from 22.4 before 22.4R3,\n  *  from 23.2 before 23.2R2;\n\n\nJunos OS Evolved:\n\n\n  *  All versions before 21.4R3-S5-EVO,\n  *  from 22.1-EVO before 22.1R3-S5-EVO, \n  *  from 22.2-EVO before 22.2R3-S3-EVO, \n  *  from 22.3-EVO before 22.3R3-S2-EVO, \n  *  from 22.4-EVO before 22.4R3-EVO, \n  *  from 23.2-EVO before 23.2R2-EVO.","status":"published","published":"2024-07-10T23:15:13.14Z","modified":"2026-06-17T07:42:13.897Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:A/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T14:10:12.016585Z"}]}}