{"id":"CVE-2021-20181","aliases":["ALPINE-CVE-2021-20181","BELL-CVE-2021-20181","DEBIAN-CVE-2021-20181","DLA-2560-1","DLA-3099-1","EUVD-2021-7636","GHSA-mq7v-47j3-rc24","OESA-2021-1218","SUSE-SU-2021:0521-1","SUSE-SU-2021:1240-1","SUSE-SU-2021:1241-1","SUSE-SU-2021:1242-1","SUSE-SU-2021:1244-1","SUSE-SU-2021:1245-1","SUSE-SU-2021:1305-1","SUSE-SU-2021:14704-1","SUSE-SU-2021:14706-1","UBUNTU-CVE-2021-20181","USN-4725-1","openSUSE-SU-2021:0363-1","openSUSE-SU-2024:11287-1"],"status":"published","title":"A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2...","description":"A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00333,"percentile":0.26735,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-362","CWE-367","CWE-416"],"published":"2021-02-01T00:00:00Z","modified":"2026-11-03T06:32:26Z","fixes":[{"ecosystem":"Alpine:v3.16","package":"qemu","fixed_in":["6.0.0-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"qemu","fixed_in":["6.0.0-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"qemu","fixed_in":["6.0.0-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"qemu","fixed_in":["6.0.0-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"qemu","fixed_in":["6.0.0-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"qemu","fixed_in":["6.0.0-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"qemu","fixed_in":["6.0.0-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"qemu","fixed_in":["6.0.0-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"qemu","fixed_in":["6.0.0-r1"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"qemu","fixed_in":["1:5.2+dfsg-4"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"qemu","fixed_in":["1:5.2+dfsg-4"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"qemu","fixed_in":["1:5.2+dfsg-4"],"sources":["osv"]},{"ecosystem":"openEuler:20.03-LTS-SP1","package":"qemu","fixed_in":["4.1.0-47.oe1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:14.04:LTS","package":"qemu","fixed_in":["2.0.0+dfsg-2ubuntu1.47+esm6"],"sources":["osv"]},{"ecosystem":"Ubuntu:16.04:LTS","package":"qemu","fixed_in":["1:2.5+dfsg-5ubuntu10.49"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"qemu","fixed_in":["1:2.11+dfsg-1ubuntu7.35"],"sources":["osv"]},{"ecosystem":"Ubuntu:20.04:LTS","package":"qemu","fixed_in":["1:4.2-3ubuntu6.12"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.16","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.0-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.17","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.0-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.18","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.0-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.19","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.0-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.20","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.0-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.0-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.0-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.0-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.0-r1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.2+dfsg-4"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.2+dfsg-4"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.2+dfsg-4"}]}]},{"source":"osv","ecosystem":"Debian:9","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.8+dfsg-6+deb9u13"}]}],"versions":["1:2.8+dfsg-6","1:2.8+dfsg-6+deb9u1","1:2.8+dfsg-6+deb9u10","1:2.8+dfsg-6+deb9u11","1:2.8+dfsg-6+deb9u12","1:2.8+dfsg-6+deb9u2","1:2.8+dfsg-6+deb9u3","1:2.8+dfsg-6+deb9u4","1:2.8+dfsg-6+deb9u5","1:2.8+dfsg-6+deb9u6","1:2.8+dfsg-6+deb9u7","1:2.8+dfsg-6+deb9u8","1:2.8+dfsg-6+deb9u9"],"bundled":8},{"source":"osv","ecosystem":"Debian:10","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.1+dfsg-8+deb10u9"}]}],"versions":["1:3.1+dfsg-8","1:3.1+dfsg-8+deb10u2","1:3.1+dfsg-8+deb10u3","1:3.1+dfsg-8+deb10u4","1:3.1+dfsg-8+deb10u5","1:3.1+dfsg-8+deb10u6","1:3.1+dfsg-8+deb10u7","1:3.1+dfsg-8+deb10u8","1:3.1+dfsg-8~deb10u1"],"bundled":35},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP1","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.0-47.oe1"}]}]},{"source":"osv","ecosystem":"SUSE:Linux 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The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.","status":"published","published":"2021-05-13T16:15:07.653Z","modified":"2026-11-03T06:32:26.727291742Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T07:17:57.723967Z"},{"id":"BELL-CVE-2021-20181","title":"CVE-2021-20181 does not affect BellSoft software","status":"withdrawn","published":"2023-08-31T12:14:10.570521Z","modified":"2026-01-26T09:47:08.962946Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:28:15.925958Z"},{"id":"CVE-2021-20181","description":"A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.","status":"published","published":"2021-05-13T16:15:07.653Z","modified":"2026-10-24T10:30:58.290753113Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:17.663289Z"},{"id":"DEBIAN-CVE-2021-20181","description":"A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.","status":"published","published":"2021-05-13T16:15:07.653Z","modified":"2026-10-23T18:03:24.191798357Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:34.311861Z"},{"id":"OESA-2021-1218","title":"qemu security update","description":"QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.\r\n\r\nSecurity Fix(es):\r\n\r\nA race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.(CVE-2021-20181)","status":"published","published":"2021-06-12T11:04:27Z","modified":"2026-08-18T01:15:12.366768543Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:38.987987Z"},{"id":"UBUNTU-CVE-2021-20181","description":"A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.","status":"published","published":"2021-02-01T00:00:00Z","modified":"2026-06-09T21:29:23.739415306Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:25.728622Z"},{"id":"DLA-2560-1","title":"qemu - security update","status":"published","published":"2021-02-16T00:00:00Z","modified":"2026-03-09T01:21:33.344431Z","updated_at":"2026-11-02T15:46:10.712745Z"},{"id":"DLA-3099-1","title":"qemu - security update","status":"published","published":"2022-09-05T00:00:00Z","modified":"2026-03-09T01:23:02.473037Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"openSUSE-SU-2021:0363-1","title":"Security update for qemu","description":"This update for qemu fixes the following issues:\n\n- Fixed potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)\n- Fixed out-of-bound access in iscsi (CVE-2020-11947 bsc#1180523)\n- Fixed out-of-bound access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)\n- Fixed out-of-bound access in ARM interrupt handling (CVE-2021-20221 bsc#1181933)\n- Fixed vfio-pci device on s390 enters error state (bsc#1179717 bsc#1179719)\n- Fixed 'Failed to try-restart qemu-ga@.service' error while updating the\n  qemu-guest-agent. (bsc#1178565)\n- Apply fixes to qemu scsi passthrough with respect to timeout and\n  error conditions, including using more correct status codes. Add\n  more qemu tracing which helped track down these issues\n  (bsc#1178049)\n\nThis update was imported from the SUSE:SLE-15-SP2:Update update project.","status":"published","published":"2021-03-01T06:22:41Z","modified":"2026-02-04T03:00:36.617869Z","updated_at":"2026-11-02T16:58:31.879684Z"},{"id":"openSUSE-SU-2024:11287-1","title":"qemu-6.1.0-32.1 on GA media","description":"These are all security issues fixed in the qemu-6.1.0-32.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2025-05-07T18:08:57.481645Z","updated_at":"2026-11-02T16:58:34.894275Z"},{"id":"SUSE-SU-2021:0521-1","title":"Security update for qemu","description":"This update for qemu fixes the following issues:\n\n- Fixed potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)\n- Fixed out-of-bound access in iscsi (CVE-2020-11947 bsc#1180523)\n- Fixed out-of-bound access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)\n- Fixed out-of-bound access in ARM interrupt handling (CVE-2021-20221 bsc#1181933)\n- Fixed vfio-pci device on s390 enters error state (bsc#1179717 bsc#1179719)\n- Fixed 'Failed to try-restart qemu-ga@.service' error while updating the\n  qemu-guest-agent. (bsc#1178565)\n- Apply fixes to qemu scsi passthrough with respect to timeout and\n  error conditions, including using more correct status codes. Add\n  more qemu tracing which helped track down these issues\n  (bsc#1178049)\n","status":"published","published":"2021-02-19T10:00:45Z","modified":"2026-02-04T02:31:48.14528Z","updated_at":"2026-11-02T15:53:48.690034Z"},{"id":"SUSE-SU-2021:1240-1","title":"Security update for qemu","description":"This update for qemu fixes the following issues:\n\n- Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)\n- Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)\n- Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)\n- Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)\n- Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)\n- Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)\n- Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)\n- Fix infinite loop (DoS) in e1000e device emulation (CVE-2020-28916, bsc#1179468)\n- Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)\n- Fix null pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)\n- Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)\n- Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)\n- Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)\n- Fix OOB access in SLIRP ARP packet processing (CVE-2020-29130, bsc#1179467)\n- Fix null pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659 bsc#1172386\n- Fix OOB access in iscsi (CVE-2020-11947 bsc#1180523)\n- Fix OOB access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)\n- Fix buffer overflow in the XGMAC device (CVE-2020-15863, bsc#1174386)\n- Fix DoS in packet processing of various emulated NICs (CVE-2020-16092 bsc#1174641)\n- Fix OOB access while processing USB packets (CVE-2020-14364 bsc#1175441)\n- Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)\n- Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)\n- Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361 bsc#1172384)\n- Fix OOB access in ROM loading (CVE-2020-13765 bsc#1172478)\n","status":"published","published":"2021-04-16T11:58:20Z","modified":"2026-02-04T04:22:26.23778Z","updated_at":"2026-11-02T15:53:49.138643Z"},{"id":"SUSE-SU-2021:1241-1","title":"Security update for qemu","description":"This update for qemu fixes the following issues:\n\n- Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)\n- Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362, bsc#1172383)\n- Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)\n- Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)\n- Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)\n- Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)\n- Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)\n- Fix infinite loop (DoS) in e1000e device emulation (CVE-2020-28916, bsc#1179468)\n- Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)\n- Fix null pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)\n- Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)\n- Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)\n- Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)\n- Fix OOB access in SLIRP ARP/NCSI packet processing (CVE-2020-29129, bsc#1179466, CVE-2020-29130, bsc#1179467)\n- Fix null pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659, bsc#1172386)\n- Fix OOB access in iscsi (CVE-2020-11947, bsc#1180523)\n- Fix OOB access in vmxnet3 emulation (CVE-2021-20203, bsc#1181639)\n- Fix buffer overflow in the XGMAC device (CVE-2020-15863, bsc#1174386)\n- Fix DoS in packet processing of various emulated NICs (CVE-2020-16092, bsc#1174641)\n- Fix OOB access while processing USB packets (CVE-2020-14364, bsc#1175441)\n- Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)\n- Fix potential privilege escalation in virtfs (CVE-2021-20181, bsc#1182137)\n- Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361, bsc#1172384)\n- Fix OOB access in ROM loading (CVE-2020-13765, bsc#1172478)\n- Fix qemu-testsuite failure\n- Fix vm migration is failing with input/output error when nfs server is disconnected (bsc#1119115)\n- Fix OOB access in ARM interrupt handling (CVE-2021-20221, bsc#1181933)\n- Fix slowness in arm32 emulation (bsc#1112499)\n- Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)\n- Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362, bsc#1172383)\n- Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)\n- Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)\n- Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)\n- Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)\n- Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)\n- Fix infinite loop (DoS) in e1000e device emulation (CVE-2020-28916, bsc#1179468)\n- Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)\n- Fix null pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)\n- Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)\n- Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)\n- Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)\n- Fix OOB access in SLIRP ARP/NCSI packet processing (CVE-2020-29129, bsc#1179466, CVE-2020-29130, bsc#1179467)\n- Fix null pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659, bsc#1172386)\n- Fix OOB access in iscsi (CVE-2020-11947, bsc#1180523)\n- Fix OOB access in vmxnet3 emulation (CVE-2021-20203, bsc#1181639)\n- Fix buffer overflow in the XGMAC device (CVE-2020-15863, bsc#1174386)\n- Fix DoS in packet processing of various emulated NICs (CVE-2020-16092, bsc#1174641)\n- Fix OOB access while processing USB packets (CVE-2020-14364, bsc#1175441)\n- Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)\n- Fix potential privilege escalation in virtfs (CVE-2021-20181, bsc#1182137)\n- Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361, bsc#1172384)\n- Fix OOB access in ROM loading (CVE-2020-13765, bsc#1172478)\n- Fix qemu-testsuite failure\n- Fix vm migration is failing with input/output error when nfs server is disconnected (bsc#1119115)\n- Fix OOB access in ARM interrupt handling (CVE-2021-20221, bsc#1181933)\n- Fix slowness in arm32 emulation (bsc#1112499)\n","status":"published","published":"2021-04-16T11:59:57Z","modified":"2026-02-04T03:21:01.163263Z","updated_at":"2026-11-02T15:53:49.138643Z"},{"id":"SUSE-SU-2021:1242-1","title":"Security update for qemu","description":"This update for qemu fixes the following issues:\n\n- Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)\n- Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)\n- Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)\n- Fix use-after-free in usb iehci packet handling (CVE-2020-25084, bsc#1176673)\n- Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)\n- Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)\n- Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)\n- Fix infinite loop (DoS) in e1000e device emulation (CVE-2020-28916, bsc#1179468)\n- Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)\n- Fix heap overflow in MSIx emulation (CVE-2020-27821, bsc#1179686)\n- Fix null pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)\n- Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)\n- Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)\n- Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)\n- Fix OOB access in SLIRP ARP/NCSI packet processing (CVE-2020-29129, bsc#1179466, CVE-2020-29130, bsc#1179467)\n- Fix null pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659 bsc#1172386)\n- Fix issue where s390 guest fails to find zipl boot menu index (bsc#1183979)\n- Fix OOB access in iscsi (CVE-2020-11947 bsc#1180523)\n- Fix OOB access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)\n- Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)\n- Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)\n- Apply fixes to qemu scsi passthrough with respect to timeout and error conditions, including using more correct status codes. (bsc#1178049)\n- Fix OOB access in ARM interrupt handling (CVE-2021-20221 bsc#1181933)\n- Make note that this patch previously included addresses (CVE-2020-13765 bsc#1172478)\n- Tweaks to spec file for better formatting, and remove not needed BuildRequires for e2fsprogs-devel and libpcap-devel\n- Fix vfio-pci device on s390 enters error state (bsc#1179725)\n- Fix PCI devices are unavailable after a subsystem reset. (bsc#1179726)\n","status":"published","published":"2021-04-16T12:44:46Z","modified":"2026-02-04T02:56:03.537674Z","updated_at":"2026-11-02T15:53:49.138643Z"},{"id":"SUSE-SU-2021:1244-1","title":"Security update for qemu","description":"This update for qemu fixes the following issues:\n\n- Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)\n- Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)\n- Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)\n- Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)\n- Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)\n- Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)\n- Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)\n- Fix infinite loop (DoS) in e1000e device emulation (CVE-2020-28916, bsc#1179468)\n- Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)\n- Fix null pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)\n- Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)\n- Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)\n- Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)\n- Fix OOB access in SLIRP ARP/NCSI packet processing (CVE-2020-29129, bsc#1179466, CVE-2020-29130, bsc#1179467)\n- Fix null pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659 bsc#1172386\n- Fix OOB access in iscsi (CVE-2020-11947 bsc#1180523)\n- Fix OOB access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)\n- Fix buffer overflow in the XGMAC device (CVE-2020-15863 bsc#1174386)\n- Fix DoS in packet processing of various emulated NICs (CVE-2020-16092 bsc#1174641)\n- Fix OOB access while processing USB packets (CVE-2020-14364 bsc#1175441)\n- Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)\n- Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)\n- Drop the 'ampersand 0x25 shift altgr' line in pt-br keymap file (bsc#1129962)\n- Fix migration failure with error message: 'error while loading state section id 3(ram) (bsc#1154790)\n- Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361 bsc#1172384)\n- Fix OOB access in ROM loading (CVE-2020-13765 bsc#1172478)\n- Fix OOB access in ARM interrupt handling (CVE-2021-20221 bsc#1181933)\n- Tweaks to spec file for better formatting, and remove not needed BuildRequires for e2fsprogs-devel and libpcap-devel\n- Use '%service_del_postun_without_restart' instead of '%service_del_postun' to avoid 'Failed to try-restart qemu-ga@.service' error while updating the qemu-guest-agent. (bsc#1178565)\n- Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)\n","status":"published","published":"2021-04-16T12:46:02Z","modified":"2026-02-04T02:23:45.67907Z","updated_at":"2026-11-02T15:53:49.138643Z"},{"id":"SUSE-SU-2021:1245-1","title":"Security update for qemu","description":"This update for qemu fixes the following issues:\n\n\n- Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)\n- Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)\n- Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)\n- Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)\n- Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)\n- Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)\n- Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)\n- Fix infinite loop (DoS) in e1000e device emulation (CVE-2020-28916, bsc#1179468)\n- Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)\n- Fix heap overflow in MSIx emulation (CVE-2020-27821, bsc#1179686)\n- Fix null pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)\n- Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)\n- Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)\n- Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)\n- Fix OOB access in SLIRP ARP/NCSI packet processing (CVE-2020-29129, bsc#1179466, CVE-2020-29130, bsc#1179467)\n- Fix null pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659 bsc#1172386)\n- Fix issue where s390 guest fails to find zipl boot menu index (bsc#1183979)\n- Fix OOB access in iscsi (CVE-2020-11947 bsc#1180523)\n- Fix OOB access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)\n- Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)\n- Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)\n- Apply fixes to qemu scsi passthrough with respect to timeout and error conditions, including using more correct status codes. (bsc#1178049)\n- Fix OOB access in ARM interrupt handling (CVE-2021-20221 bsc#1181933)\n- Tweaks to spec file for better formatting, and remove not needed BuildRequires for e2fsprogs-devel and libpcap-devel\n- Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361 bsc#1172384)\n- Fix OOB access in ROM loading (CVE-2020-13765 bsc#1172478)\n- Fix OOB access while processing USB packets (CVE-2020-14364 bsc#1175441)\n- Fix DoS in packet processing of various emulated NICs (CVE-2020-16092 bsc#1174641)\n- Fix buffer overflow in the XGMAC device (CVE-2020-15863 bsc#1174386)\n- Use '%service_del_postun_without_restart' instead of '%service_del_postun' to avoid 'Failed to try-restart qemu-ga@.service' error while updating the qemu-guest-agent. (bsc#1178565)\n","status":"published","published":"2021-04-16T12:46:51Z","modified":"2026-02-04T03:42:17.365261Z","updated_at":"2026-11-02T15:53:49.138643Z"},{"id":"SUSE-SU-2021:1305-1","title":"Security update for qemu","description":"This update for qemu fixes the following issues:\n\n- Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)\n- Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)\n- Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)\n- Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)\n- Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)\n- Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)\n- Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)\n- Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)\n- Fix null pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)\n- Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)\n- Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)\n- Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)\n- Fix OOB access in SLIRP ARP packet processing (CVE-2020-29130, bsc#1179467)\n- Fix null pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659 bsc#1172386\n- Fix OOB access in iscsi (CVE-2020-11947 bsc#1180523)\n- Fix OOB access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)\n- Fix buffer overflow in the XGMAC device (CVE-2020-15863 bsc#1174386)\n- Fix DoS in packet processing of various emulated NICs (CVE-2020-16092 bsc#1174641)\n- Fix OOB access while processing USB packets (CVE-2020-14364 bsc#1175441)\n- Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)\n- Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)\n- Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361 bsc#1172384)\n- Fix OOB access in ROM loading (CVE-2020-13765 bsc#1172478)\n","status":"published","published":"2021-04-22T16:07:10Z","modified":"2026-02-04T04:26:09.721694Z","updated_at":"2026-11-02T15:53:49.138643Z"},{"id":"SUSE-SU-2021:14704-1","title":"Security update for kvm","description":"This update for kvm fixes the following issues:\n\n- Fix OOB read and write due to integer overflow in sm501_2d_operation() in hw/display/sm501.c (CVE-2020-12829, bsc#1172385)\n- Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)\n- Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)\n- Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)\n- Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)\n- Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)\n- Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)\n- Fix DoS in e1000 emulated device (CVE-2021-20257 bsc#1182577)\n- Fix OOB access in SLIRP ARP packet processing (CVE-2020-29130, bsc#1179467)\n- Fix OOB access while processing USB packets (CVE-2020-14364 bsc#1175441)\n- Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)\n- Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)\n- Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361 bsc#1172384)\n- Fix OOB access in ROM loading (CVE-2020-13765 bsc#1172478)\n","status":"published","published":"2021-04-20T12:35:06Z","modified":"2026-02-04T04:03:17.364076Z","updated_at":"2026-11-02T15:53:49.138643Z"},{"id":"SUSE-SU-2021:14706-1","title":"Security update for kvm","description":"This update for kvm fixes the following issues:\n\n- Fix OOB read and write due to integer overflow in sm501_2d_operation() in hw/display/sm501.c (CVE-2020-12829, bsc#1172385)\n- Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)\n- Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)\n- Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)\n- Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)\n- Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)\n- Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)\n- Fix DoS in e1000 emulated device (CVE-2021-20257 bsc#1182577)\n- Fix OOB access in SLIRP ARP packet processing (CVE-2020-29130, bsc#1179467)\n- Fix OOB access while processing USB packets (CVE-2020-14364 bsc#1175441)\n- Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)\n- Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)\n- Fix use-after-free in slirp (CVE-2019-15890 bsc#1149811)\n- Fix for similar problems as for the original fix prompting this issue (CVE-2019-6778 bsc#1123156)\n- Fix potential OOB accesses in slirp (CVE-2020-8608 bsc#1163018 CVE-2020-7039 bsc#1161066)\n- Fix use after free in slirp (CVE-2020-1983 bsc#1170940)\n- Fix potential DOS in lsi scsi controller emulation (CVE-2019-12068 bsc#1146873)\n- Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361 bsc#1172384)\n- Fix OOB access in ROM loading (CVE-2020-13765 bsc#1172478)\n","status":"published","published":"2021-04-23T15:32:45Z","modified":"2026-02-04T02:56:04.771314Z","updated_at":"2026-11-02T15:53:49.138643Z"},{"id":"USN-4725-1","title":"qemu vulnerabilities","description":"It was discovered that QEMU incorrectly handled memory in iSCSI emulation.\nAn attacker inside the guest could possibly use this issue to obtain\nsensitive information. This issue only affected Ubuntu 16.04 LTS, Ubuntu\n18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2020-11947)\n\nAlexander Bulekov discovered that QEMU incorrectly handled Intel e1000e\nemulation. An attacker inside the guest could use this issue to cause QEMU\nto crash, resulting in a denial of service. (CVE-2020-15859)\n\nAlexander Bulekov discovered that QEMU incorrectly handled memory region\ncache. An attacker inside the guest could use this issue to cause QEMU to\ncrash, resulting in a denial of service. This issue only affected Ubuntu\n20.04 LTS, and Ubuntu 20.10. (CVE-2020-27821)\n\nCheol-woo Myung discovered that QEMU incorrectly handled Intel e1000e\nemulation. An attacker inside the guest could use this issue to cause a\ndenial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04\nLTS, and Ubuntu 20.10. (CVE-2020-28916)\n\nWenxiang Qian discovered that QEMU incorrectly handled ATAPI emulation. An\nattacker inside the guest could use this issue to cause QEMU to crash,\nresulting in a denial of service. (CVE-2020-29443)\n\nIt was discovered that QEMU incorrectly handled VirtFS directory sharing.\nAn attacker inside the guest could use this issue to cause QEMU to crash,\nresulting in a denial of service. (CVE-2021-20181)\n","status":"published","published":"2021-02-08T13:12:32Z","modified":"2026-04-27T15:48:46.870313327Z","updated_at":"2026-11-02T16:58:15.159055Z"}]}}