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CVE-2021-20181

A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2...

7.5 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
High
Privileges needed
High
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.33%Down 0.5 points since May 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.5

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.

Record
CVE-2021-20181
CVSS 3.1
7.5 HighCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0
6.9 MediumAV:L/AC:M/Au:N/C:C/I:C/A:C
Weakness
CWE-367, CWE-362
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2021-20181
Weakness
CWE-367
Updated
2026-11-02
EUVDEUVD-2021-7636 No score

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.

Record
EUVD-2021-7636
Updated
2026-11-03
GitHub AdvisoriesGHSA-mq7v-47j3-rc24 7.5

A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2...

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.

Record
GHSA-mq7v-47j3-rc24
CVSS 3.1
7.5 HighCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-362, CWE-416
Updated
2026-11-02
OSVALPINE-CVE-2021-20181 7.5

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.

Record
ALPINE-CVE-2021-20181
CVSS 3.1
7.5 HighCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-03
OSVBELL-CVE-2021-20181 7.5

CVE-2021-20181 does not affect BellSoft software

Record
BELL-CVE-2021-20181
CVSS 3.1
7.5 HighCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
Show 16 moreShow less
OSV 7.5

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.

Record
CVE-2021-20181
CVSS 3.1
7.5 HighCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2021-20181 7.5

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.

Record
DEBIAN-CVE-2021-20181
CVSS 3.1
7.5 HighCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2021-1218 7.5

qemu security update

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.

Security Fix(es):

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.(CVE-2021-20181)

Record
OESA-2021-1218
CVSS 3.1
7.5 HighCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2021-20181 7.5

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.

Record
UBUNTU-CVE-2021-20181
CVSS 3.1
7.5 HighCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2021:0363-1 No score

Security update for qemu

This update for qemu fixes the following issues:

  • Fixed potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)
  • Fixed out-of-bound access in iscsi (CVE-2020-11947 bsc#1180523)
  • Fixed out-of-bound access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)
  • Fixed out-of-bound access in ARM interrupt handling (CVE-2021-20221 bsc#1181933)
  • Fixed vfio-pci device on s390 enters error state (bsc#1179717 bsc#1179719)
  • Fixed 'Failed to try-restart [email protected]' error while updating the qemu-guest-agent. (bsc#1178565)
  • Apply fixes to qemu scsi passthrough with respect to timeout and error conditions, including using more correct status codes. Add more qemu tracing which helped track down these issues (bsc#1178049)

This update was imported from the SUSE:SLE-15-SP2:Update update project.

Record
openSUSE-SU-2021:0363-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:11287-1 No score

qemu-6.1.0-32.1 on GA media

These are all security issues fixed in the qemu-6.1.0-32.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11287-1
Updated
2026-11-02
OSVSUSE-SU-2021:0521-1 No score

Security update for qemu

This update for qemu fixes the following issues:

  • Fixed potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)
  • Fixed out-of-bound access in iscsi (CVE-2020-11947 bsc#1180523)
  • Fixed out-of-bound access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)
  • Fixed out-of-bound access in ARM interrupt handling (CVE-2021-20221 bsc#1181933)
  • Fixed vfio-pci device on s390 enters error state (bsc#1179717 bsc#1179719)
  • Fixed 'Failed to try-restart [email protected]' error while updating the qemu-guest-agent. (bsc#1178565)
  • Apply fixes to qemu scsi passthrough with respect to timeout and error conditions, including using more correct status codes. Add more qemu tracing which helped track down these issues (bsc#1178049)
Record
SUSE-SU-2021:0521-1
Updated
2026-11-02
OSVSUSE-SU-2021:1240-1 No score

Security update for qemu

This update for qemu fixes the following issues:

  • Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)
  • Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)
  • Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)
  • Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)
  • Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)
  • Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)
  • Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)
  • Fix infinite loop (DoS) in e1000e device emulation (CVE-2020-28916, bsc#1179468)
  • Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)
  • Fix null pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)
  • Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)
  • Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)
  • Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)
  • Fix OOB access in SLIRP ARP packet processing (CVE-2020-29130, bsc#1179467)
  • Fix null pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659 bsc#1172386
  • Fix OOB access in iscsi (CVE-2020-11947 bsc#1180523)
  • Fix OOB access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)
  • Fix buffer overflow in the XGMAC device (CVE-2020-15863, bsc#1174386)
  • Fix DoS in packet processing of various emulated NICs (CVE-2020-16092 bsc#1174641)
  • Fix OOB access while processing USB packets (CVE-2020-14364 bsc#1175441)
  • Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)
  • Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)
  • Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361 bsc#1172384)
  • Fix OOB access in ROM loading (CVE-2020-13765 bsc#1172478)
Record
SUSE-SU-2021:1240-1
Updated
2026-11-02
OSVSUSE-SU-2021:1241-1 No score

Security update for qemu

This update for qemu fixes the following issues:

  • Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)
  • Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362, bsc#1172383)
  • Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)
  • Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)
  • Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)
  • Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)
  • Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)
  • Fix infinite loop (DoS) in e1000e device emulation (CVE-2020-28916, bsc#1179468)
  • Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)
  • Fix null pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)
  • Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)
  • Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)
  • Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)
  • Fix OOB access in SLIRP ARP/NCSI packet processing (CVE-2020-29129, bsc#1179466, CVE-2020-29130, bsc#1179467)
  • Fix null pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659, bsc#1172386)
  • Fix OOB access in iscsi (CVE-2020-11947, bsc#1180523)
  • Fix OOB access in vmxnet3 emulation (CVE-2021-20203, bsc#1181639)
  • Fix buffer overflow in the XGMAC device (CVE-2020-15863, bsc#1174386)
  • Fix DoS in packet processing of various emulated NICs (CVE-2020-16092, bsc#1174641)
  • Fix OOB access while processing USB packets (CVE-2020-14364, bsc#1175441)
  • Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)
  • Fix potential privilege escalation in virtfs (CVE-2021-20181, bsc#1182137)
  • Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361, bsc#1172384)
  • Fix OOB access in ROM loading (CVE-2020-13765, bsc#1172478)
  • Fix qemu-testsuite failure
  • Fix vm migration is failing with input/output error when nfs server is disconnected (bsc#1119115)
  • Fix OOB access in ARM interrupt handling (CVE-2021-20221, bsc#1181933)
  • Fix slowness in arm32 emulation (bsc#1112499)
  • Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)
  • Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362, bsc#1172383)
  • Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)
  • Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)
  • Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)
  • Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)
  • Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)
  • Fix infinite loop (DoS) in e1000e device emulation (CVE-2020-28916, bsc#1179468)
  • Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)
  • Fix null pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)
  • Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)
  • Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)
  • Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)
  • Fix OOB access in SLIRP ARP/NCSI packet processing (CVE-2020-29129, bsc#1179466, CVE-2020-29130, bsc#1179467)
  • Fix null pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659, bsc#1172386)
  • Fix OOB access in iscsi (CVE-2020-11947, bsc#1180523)
  • Fix OOB access in vmxnet3 emulation (CVE-2021-20203, bsc#1181639)
  • Fix buffer overflow in the XGMAC device (CVE-2020-15863, bsc#1174386)
  • Fix DoS in packet processing of various emulated NICs (CVE-2020-16092, bsc#1174641)
  • Fix OOB access while processing USB packets (CVE-2020-14364, bsc#1175441)
  • Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)…
Record
SUSE-SU-2021:1241-1
Updated
2026-11-02
OSVSUSE-SU-2021:1242-1 No score

Security update for qemu

This update for qemu fixes the following issues:

  • Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)
  • Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)
  • Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)
  • Fix use-after-free in usb iehci packet handling (CVE-2020-25084, bsc#1176673)
  • Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)
  • Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)
  • Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)
  • Fix infinite loop (DoS) in e1000e device emulation (CVE-2020-28916, bsc#1179468)
  • Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)
  • Fix heap overflow in MSIx emulation (CVE-2020-27821, bsc#1179686)
  • Fix null pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)
  • Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)
  • Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)
  • Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)
  • Fix OOB access in SLIRP ARP/NCSI packet processing (CVE-2020-29129, bsc#1179466, CVE-2020-29130, bsc#1179467)
  • Fix null pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659 bsc#1172386)
  • Fix issue where s390 guest fails to find zipl boot menu index (bsc#1183979)
  • Fix OOB access in iscsi (CVE-2020-11947 bsc#1180523)
  • Fix OOB access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)
  • Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)
  • Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)
  • Apply fixes to qemu scsi passthrough with respect to timeout and error conditions, including using more correct status codes. (bsc#1178049)
  • Fix OOB access in ARM interrupt handling (CVE-2021-20221 bsc#1181933)
  • Make note that this patch previously included addresses (CVE-2020-13765 bsc#1172478)
  • Tweaks to spec file for better formatting, and remove not needed BuildRequires for e2fsprogs-devel and libpcap-devel
  • Fix vfio-pci device on s390 enters error state (bsc#1179725)
  • Fix PCI devices are unavailable after a subsystem reset. (bsc#1179726)
Record
SUSE-SU-2021:1242-1
Updated
2026-11-02
OSVSUSE-SU-2021:1244-1 No score

Security update for qemu

This update for qemu fixes the following issues:

  • Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)
  • Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)
  • Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)
  • Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)
  • Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)
  • Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)
  • Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)
  • Fix infinite loop (DoS) in e1000e device emulation (CVE-2020-28916, bsc#1179468)
  • Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)
  • Fix null pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)
  • Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)
  • Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)
  • Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)
  • Fix OOB access in SLIRP ARP/NCSI packet processing (CVE-2020-29129, bsc#1179466, CVE-2020-29130, bsc#1179467)
  • Fix null pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659 bsc#1172386
  • Fix OOB access in iscsi (CVE-2020-11947 bsc#1180523)
  • Fix OOB access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)
  • Fix buffer overflow in the XGMAC device (CVE-2020-15863 bsc#1174386)
  • Fix DoS in packet processing of various emulated NICs (CVE-2020-16092 bsc#1174641)
  • Fix OOB access while processing USB packets (CVE-2020-14364 bsc#1175441)
  • Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)
  • Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)
  • Drop the 'ampersand 0x25 shift altgr' line in pt-br keymap file (bsc#1129962)
  • Fix migration failure with error message: 'error while loading state section id 3(ram) (bsc#1154790)
  • Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361 bsc#1172384)
  • Fix OOB access in ROM loading (CVE-2020-13765 bsc#1172478)
  • Fix OOB access in ARM interrupt handling (CVE-2021-20221 bsc#1181933)
  • Tweaks to spec file for better formatting, and remove not needed BuildRequires for e2fsprogs-devel and libpcap-devel
  • Use '%service_del_postun_without_restart' instead of '%service_del_postun' to avoid 'Failed to try-restart [email protected]' error while updating the qemu-guest-agent. (bsc#1178565)
  • Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)
Record
SUSE-SU-2021:1244-1
Updated
2026-11-02
OSVSUSE-SU-2021:1245-1 No score

Security update for qemu

This update for qemu fixes the following issues:

  • Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)
  • Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)
  • Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)
  • Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)
  • Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)
  • Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)
  • Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)
  • Fix infinite loop (DoS) in e1000e device emulation (CVE-2020-28916, bsc#1179468)
  • Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)
  • Fix heap overflow in MSIx emulation (CVE-2020-27821, bsc#1179686)
  • Fix null pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)
  • Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)
  • Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)
  • Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)
  • Fix OOB access in SLIRP ARP/NCSI packet processing (CVE-2020-29129, bsc#1179466, CVE-2020-29130, bsc#1179467)
  • Fix null pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659 bsc#1172386)
  • Fix issue where s390 guest fails to find zipl boot menu index (bsc#1183979)
  • Fix OOB access in iscsi (CVE-2020-11947 bsc#1180523)
  • Fix OOB access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)
  • Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)
  • Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)
  • Apply fixes to qemu scsi passthrough with respect to timeout and error conditions, including using more correct status codes. (bsc#1178049)
  • Fix OOB access in ARM interrupt handling (CVE-2021-20221 bsc#1181933)
  • Tweaks to spec file for better formatting, and remove not needed BuildRequires for e2fsprogs-devel and libpcap-devel
  • Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361 bsc#1172384)
  • Fix OOB access in ROM loading (CVE-2020-13765 bsc#1172478)
  • Fix OOB access while processing USB packets (CVE-2020-14364 bsc#1175441)
  • Fix DoS in packet processing of various emulated NICs (CVE-2020-16092 bsc#1174641)
  • Fix buffer overflow in the XGMAC device (CVE-2020-15863 bsc#1174386)
  • Use '%service_del_postun_without_restart' instead of '%service_del_postun' to avoid 'Failed to try-restart [email protected]' error while updating the qemu-guest-agent. (bsc#1178565)
Record
SUSE-SU-2021:1245-1
Updated
2026-11-02
OSVSUSE-SU-2021:1305-1 No score

Security update for qemu

This update for qemu fixes the following issues:

  • Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)
  • Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)
  • Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)
  • Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)
  • Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)
  • Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)
  • Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)
  • Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)
  • Fix null pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)
  • Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)
  • Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)
  • Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)
  • Fix OOB access in SLIRP ARP packet processing (CVE-2020-29130, bsc#1179467)
  • Fix null pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659 bsc#1172386
  • Fix OOB access in iscsi (CVE-2020-11947 bsc#1180523)
  • Fix OOB access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)
  • Fix buffer overflow in the XGMAC device (CVE-2020-15863 bsc#1174386)
  • Fix DoS in packet processing of various emulated NICs (CVE-2020-16092 bsc#1174641)
  • Fix OOB access while processing USB packets (CVE-2020-14364 bsc#1175441)
  • Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)
  • Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)
  • Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361 bsc#1172384)
  • Fix OOB access in ROM loading (CVE-2020-13765 bsc#1172478)
Record
SUSE-SU-2021:1305-1
Updated
2026-11-02
OSVSUSE-SU-2021:14704-1 No score

Security update for kvm

This update for kvm fixes the following issues:

  • Fix OOB read and write due to integer overflow in sm501_2d_operation() in hw/display/sm501.c (CVE-2020-12829, bsc#1172385)
  • Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)
  • Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)
  • Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)
  • Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)
  • Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)
  • Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)
  • Fix DoS in e1000 emulated device (CVE-2021-20257 bsc#1182577)
  • Fix OOB access in SLIRP ARP packet processing (CVE-2020-29130, bsc#1179467)
  • Fix OOB access while processing USB packets (CVE-2020-14364 bsc#1175441)
  • Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)
  • Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)
  • Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361 bsc#1172384)
  • Fix OOB access in ROM loading (CVE-2020-13765 bsc#1172478)
Record
SUSE-SU-2021:14704-1
Updated
2026-11-02
OSVSUSE-SU-2021:14706-1 No score

Security update for kvm

This update for kvm fixes the following issues:

  • Fix OOB read and write due to integer overflow in sm501_2d_operation() in hw/display/sm501.c (CVE-2020-12829, bsc#1172385)
  • Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)
  • Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)
  • Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)
  • Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)
  • Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)
  • Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)
  • Fix DoS in e1000 emulated device (CVE-2021-20257 bsc#1182577)
  • Fix OOB access in SLIRP ARP packet processing (CVE-2020-29130, bsc#1179467)
  • Fix OOB access while processing USB packets (CVE-2020-14364 bsc#1175441)
  • Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)
  • Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)
  • Fix use-after-free in slirp (CVE-2019-15890 bsc#1149811)
  • Fix for similar problems as for the original fix prompting this issue (CVE-2019-6778 bsc#1123156)
  • Fix potential OOB accesses in slirp (CVE-2020-8608 bsc#1163018 CVE-2020-7039 bsc#1161066)
  • Fix use after free in slirp (CVE-2020-1983 bsc#1170940)
  • Fix potential DOS in lsi scsi controller emulation (CVE-2019-12068 bsc#1146873)
  • Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361 bsc#1172384)
  • Fix OOB access in ROM loading (CVE-2020-13765 bsc#1172478)
Record
SUSE-SU-2021:14706-1
Updated
2026-11-02
OSVUSN-4725-1 No score

qemu vulnerabilities

It was discovered that QEMU incorrectly handled memory in iSCSI emulation. An attacker inside the guest could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2020-11947)

Alexander Bulekov discovered that QEMU incorrectly handled Intel e1000e emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2020-15859)

Alexander Bulekov discovered that QEMU incorrectly handled memory region cache. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS, and Ubuntu 20.10. (CVE-2020-27821)

Cheol-woo Myung discovered that QEMU incorrectly handled Intel e1000e emulation. An attacker inside the guest could use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 20.10. (CVE-2020-28916)

Wenxiang Qian discovered that QEMU incorrectly handled ATAPI emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2020-29443)

It was discovered that QEMU incorrectly handled VirtFS directory sharing. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2021-20181)

Record
USN-4725-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
qemu
Alpine:v3.16
 before 6.0.0-r1
6.0.0-r1
qemu
Alpine:v3.17
 before 6.0.0-r1
6.0.0-r1
qemu
Alpine:v3.18
 before 6.0.0-r1
6.0.0-r1
qemu
Alpine:v3.19
 before 6.0.0-r1
6.0.0-r1
qemu
Alpine:v3.20
 before 6.0.0-r1
6.0.0-r1
qemu
Alpine:v3.21
 before 6.0.0-r1
6.0.0-r1
qemu
Alpine:v3.22
 before 6.0.0-r1
6.0.0-r1
qemu
Alpine:v3.23
 before 6.0.0-r1
6.0.0-r1
qemu
Alpine:v3.24
 before 6.0.0-r1
6.0.0-r1
qemu
Debian:12
 before 1:5.2+dfsg-4
1:5.2+dfsg-4
Show 46 moreShow less
Affected packages
PackageAffectedFixed
qemu
Debian:13
 before 1:5.2+dfsg-4
1:5.2+dfsg-4
qemu
Debian:14
 before 1:5.2+dfsg-4
1:5.2+dfsg-4
qemu
Debian:9
From an advisory covering 8 CVEs
 before 1:2.8+dfsg-6+deb9u13, plus listed versions
1:2.8+dfsg-61:2.8+dfsg-6+deb9u11:2.8+dfsg-6+deb9u101:2.8+dfsg-6+deb9u111:2.8+dfsg-6+deb9u12
Show 8 moreShow less
1:2.8+dfsg-6+deb9u21:2.8+dfsg-6+deb9u31:2.8+dfsg-6+deb9u41:2.8+dfsg-6+deb9u51:2.8+dfsg-6+deb9u61:2.8+dfsg-6+deb9u71:2.8+dfsg-6+deb9u81:2.8+dfsg-6+deb9u9
1:2.8+dfsg-6+deb9u13
qemu
Debian:10
From an advisory covering 35 CVEs
 before 1:3.1+dfsg-8+deb10u9, plus listed versions
1:3.1+dfsg-81:3.1+dfsg-8+deb10u21:3.1+dfsg-8+deb10u31:3.1+dfsg-8+deb10u41:3.1+dfsg-8+deb10u5
Show 4 moreShow less
1:3.1+dfsg-8+deb10u61:3.1+dfsg-8+deb10u71:3.1+dfsg-8+deb10u81:3.1+dfsg-8~deb10u1
1:3.1+dfsg-8+deb10u9
qemu
openEuler:20.03-LTS-SP1
 before 4.1.0-47.oe1
4.1.0-47.oe1
qemu
SUSE:Linux Enterprise Module for Basesystem 15 SP2
From an advisory covering 4 CVEs
 before 4.2.1-11.13.1
4.2.1-11.13.1
qemu
SUSE:Linux Enterprise Module for Server Applications 15 SP2
From an advisory covering 4 CVEs
 before 4.2.1-11.13.1
4.2.1-11.13.1
qemu
SUSE:HPE Helion OpenStack 8
From an advisory covering 22 CVEs
 before 2.9.1-6.47.1
2.9.1-6.47.1
qemu
SUSE:OpenStack Cloud 8
From an advisory covering 22 CVEs
 before 2.9.1-6.47.1
2.9.1-6.47.1
qemu
SUSE:OpenStack Cloud Crowbar 8
From an advisory covering 22 CVEs
 before 2.9.1-6.47.1
2.9.1-6.47.1
qemu
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
From an advisory covering 22 CVEs
 before 2.9.1-6.47.1
2.9.1-6.47.1
qemu
SUSE:Linux Enterprise Server 12 SP3-LTSS
From an advisory covering 22 CVEs
 before 2.9.1-6.47.1
2.9.1-6.47.1
qemu
SUSE:Linux Enterprise Server 12 SP3-BCL
From an advisory covering 22 CVEs
 before 2.9.1-6.47.1
2.9.1-6.47.1
qemu
SUSE:OpenStack Cloud 9
From an advisory covering 24 CVEs
 before 2.11.2-5.29.1
2.11.2-5.29.1
qemu
SUSE:OpenStack Cloud Crowbar 9
From an advisory covering 24 CVEs
 before 2.11.2-5.29.1
2.11.2-5.29.1
qemu
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
From an advisory covering 24 CVEs
 before 2.11.2-5.29.1
2.11.2-5.29.1
qemu
SUSE:Linux Enterprise Server 12 SP4-LTSS
From an advisory covering 24 CVEs
 before 2.11.2-5.29.1
2.11.2-5.29.1
qemu
SUSE:Linux Enterprise Server 12 SP5
From an advisory covering 21 CVEs
 before 3.1.1.1-48.2
3.1.1.1-48.2
qemu
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
From an advisory covering 21 CVEs
 before 3.1.1.1-48.2
3.1.1.1-48.2
qemu
SUSE:Linux Enterprise High Performance Computing 15-ESPOS
From an advisory covering 24 CVEs
 before 2.11.2-9.43.1
2.11.2-9.43.1
qemu
SUSE:Linux Enterprise High Performance Computing 15-LTSS
From an advisory covering 24 CVEs
 before 2.11.2-9.43.1
2.11.2-9.43.1
qemu
SUSE:Linux Enterprise Server 15-LTSS
From an advisory covering 24 CVEs
 before 2.11.2-9.43.1
2.11.2-9.43.1
qemu
SUSE:Linux Enterprise Server for SAP Applications 15
From an advisory covering 24 CVEs
 before 2.11.2-9.43.1
2.11.2-9.43.1
qemu
SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS
From an advisory covering 25 CVEs
 before 3.1.1.1-9.24.3
3.1.1.1-9.24.3
qemu
SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS
From an advisory covering 25 CVEs
 before 3.1.1.1-9.24.3
3.1.1.1-9.24.3
qemu
SUSE:Linux Enterprise Server 15 SP1-BCL
From an advisory covering 25 CVEs
 before 3.1.1.1-9.24.3
3.1.1.1-9.24.3
qemu
SUSE:Linux Enterprise Server 15 SP1-LTSS
From an advisory covering 25 CVEs
 before 3.1.1.1-9.24.3
3.1.1.1-9.24.3
qemu
SUSE:Linux Enterprise Server for SAP Applications 15 SP1
From an advisory covering 25 CVEs
 before 3.1.1.1-9.24.3
3.1.1.1-9.24.3
qemu
SUSE:Manager Proxy 4.0
From an advisory covering 25 CVEs
 before 3.1.1.1-9.24.3
3.1.1.1-9.24.3
qemu
SUSE:Manager Retail Branch Server 4.0
From an advisory covering 25 CVEs
 before 3.1.1.1-9.24.3
3.1.1.1-9.24.3
qemu
SUSE:Manager Server 4.0
From an advisory covering 25 CVEs
 before 3.1.1.1-9.24.3
3.1.1.1-9.24.3
qemu
SUSE:Enterprise Storage 6
From an advisory covering 25 CVEs
 before 3.1.1.1-9.24.3
3.1.1.1-9.24.3
qemu
SUSE:Linux Enterprise Server 12 SP2-BCL
From an advisory covering 21 CVEs
 before 2.6.2-41.62.1
2.6.2-41.62.1
kvm
SUSE:Linux Enterprise Server 11 SP4-LTSS
From an advisory covering 15 CVEs
 before 1.4.2-60.34.1
1.4.2-60.34.1
kvm
SUSE:Linux Enterprise Point of Sale 11 SP3
From an advisory covering 21 CVEs
 before 1.4.2-53.38.1
1.4.2-53.38.1
qemu
Ubuntu:Pro:14.04:LTS
 before 2.0.0+dfsg-2ubuntu1.47+esm6, plus listed versions
1.5.0+dfsg-3ubuntu51.5.0+dfsg-3ubuntu61.6.0+dfsg-2ubuntu11.6.0+dfsg-2ubuntu21.6.0+dfsg-2ubuntu3
Show 45 moreShow less
1.6.0+dfsg-2ubuntu41.7.0+dfsg-2ubuntu11.7.0+dfsg-2ubuntu21.7.0+dfsg-2ubuntu31.7.0+dfsg-2ubuntu41.7.0+dfsg-2ubuntu51.7.0+dfsg-2ubuntu71.7.0+dfsg-2ubuntu81.7.0+dfsg-2ubuntu91.7.0+dfsg-3ubuntu1~ppa11.7.0+dfsg-3ubuntu11.7.0+dfsg-3ubuntu21.7.0+dfsg-3ubuntu31.7.0+dfsg-3ubuntu41.7.0+dfsg-3ubuntu51.7.0+dfsg-3ubuntu61.7.0+dfsg-3ubuntu72.0.0~rc1+dfsg-0ubuntu12.0.0~rc1+dfsg-0ubuntu22.0.0~rc1+dfsg-0ubuntu32.0.0~rc1+dfsg-0ubuntu3.12.0.0+dfsg-2ubuntu12.0.0+dfsg-2ubuntu1.12.0.0+dfsg-2ubuntu1.22.0.0+dfsg-2ubuntu1.32.0.0+dfsg-2ubuntu1.52.0.0+dfsg-2ubuntu1.62.0.0+dfsg-2ubuntu1.72.0.0+dfsg-2ubuntu1.82.0.0+dfsg-2ubuntu1.92.0.0+dfsg-2ubuntu1.102.0.0+dfsg-2ubuntu1.112.0.0+dfsg-2ubuntu1.132.0.0+dfsg-2ubuntu1.142.0.0+dfsg-2ubuntu1.152.0.0+dfsg-2ubuntu1.162.0.0+dfsg-2ubuntu1.172.0.0+dfsg-2ubuntu1.182.0.0+dfsg-2ubuntu1.192.0.0+dfsg-2ubuntu1.202.0.0+dfsg-2ubuntu1.212.0.0+dfsg-2ubuntu1.222.0.0+dfsg-2ubuntu1.242.0.0+dfsg-2ubuntu1.252.0.0+dfsg-2ubuntu1.26
2.0.0+dfsg-2ubuntu1.47+esm6
qemu
Ubuntu:16.04:LTS
 before 1:2.5+dfsg-5ubuntu10.49, plus listed versions
1:2.3+dfsg-5ubuntu91:2.3+dfsg-5ubuntu101:2.4+dfsg-4ubuntu11:2.4+dfsg-4ubuntu21:2.4+dfsg-4ubuntu3
Show 45 moreShow less
1:2.4+dfsg-5ubuntu31:2.5+dfsg-1ubuntu21:2.5+dfsg-1ubuntu31:2.5+dfsg-1ubuntu41:2.5+dfsg-1ubuntu51:2.5+dfsg-5ubuntu11:2.5+dfsg-5ubuntu21:2.5+dfsg-5ubuntu41:2.5+dfsg-5ubuntu61:2.5+dfsg-5ubuntu71:2.5+dfsg-5ubuntu101:2.5+dfsg-5ubuntu10.11:2.5+dfsg-5ubuntu10.21:2.5+dfsg-5ubuntu10.31:2.5+dfsg-5ubuntu10.41:2.5+dfsg-5ubuntu10.51:2.5+dfsg-5ubuntu10.61:2.5+dfsg-5ubuntu10.71:2.5+dfsg-5ubuntu10.81:2.5+dfsg-5ubuntu10.91:2.5+dfsg-5ubuntu10.101:2.5+dfsg-5ubuntu10.111:2.5+dfsg-5ubuntu10.131:2.5+dfsg-5ubuntu10.141:2.5+dfsg-5ubuntu10.151:2.5+dfsg-5ubuntu10.161:2.5+dfsg-5ubuntu10.201:2.5+dfsg-5ubuntu10.211:2.5+dfsg-5ubuntu10.221:2.5+dfsg-5ubuntu10.241:2.5+dfsg-5ubuntu10.251:2.5+dfsg-5ubuntu10.261:2.5+dfsg-5ubuntu10.281:2.5+dfsg-5ubuntu10.291:2.5+dfsg-5ubuntu10.301:2.5+dfsg-5ubuntu10.311:2.5+dfsg-5ubuntu10.321:2.5+dfsg-5ubuntu10.331:2.5+dfsg-5ubuntu10.341:2.5+dfsg-5ubuntu10.351:2.5+dfsg-5ubuntu10.361:2.5+dfsg-5ubuntu10.371:2.5+dfsg-5ubuntu10.381:2.5+dfsg-5ubuntu10.391:2.5+dfsg-5ubuntu10.40
1:2.5+dfsg-5ubuntu10.49
qemu
Ubuntu:18.04:LTS
 before 1:2.11+dfsg-1ubuntu7.35, plus listed versions
1:2.10+dfsg-0ubuntu31:2.10+dfsg-0ubuntu41:2.10+dfsg-0ubuntu51:2.11+dfsg-1ubuntu11:2.11+dfsg-1ubuntu2
Show 34 moreShow less
1:2.11+dfsg-1ubuntu41:2.11+dfsg-1ubuntu51:2.11+dfsg-1ubuntu61:2.11+dfsg-1ubuntu71:2.11+dfsg-1ubuntu7.11:2.11+dfsg-1ubuntu7.21:2.11+dfsg-1ubuntu7.31:2.11+dfsg-1ubuntu7.41:2.11+dfsg-1ubuntu7.51:2.11+dfsg-1ubuntu7.61:2.11+dfsg-1ubuntu7.71:2.11+dfsg-1ubuntu7.81:2.11+dfsg-1ubuntu7.91:2.11+dfsg-1ubuntu7.101:2.11+dfsg-1ubuntu7.121:2.11+dfsg-1ubuntu7.131:2.11+dfsg-1ubuntu7.141:2.11+dfsg-1ubuntu7.151:2.11+dfsg-1ubuntu7.171:2.11+dfsg-1ubuntu7.181:2.11+dfsg-1ubuntu7.191:2.11+dfsg-1ubuntu7.201:2.11+dfsg-1ubuntu7.211:2.11+dfsg-1ubuntu7.221:2.11+dfsg-1ubuntu7.231:2.11+dfsg-1ubuntu7.251:2.11+dfsg-1ubuntu7.261:2.11+dfsg-1ubuntu7.271:2.11+dfsg-1ubuntu7.281:2.11+dfsg-1ubuntu7.291:2.11+dfsg-1ubuntu7.311:2.11+dfsg-1ubuntu7.321:2.11+dfsg-1ubuntu7.331:2.11+dfsg-1ubuntu7.34
1:2.11+dfsg-1ubuntu7.35
qemu
Ubuntu:20.04:LTS
 before 1:4.2-3ubuntu6.12, plus listed versions
1:4.0+dfsg-0ubuntu91:4.0+dfsg-0ubuntu101:4.2-1ubuntu11:4.2-1ubuntu21:4.2-3ubuntu1
Show 16 moreShow less
1:4.2-3ubuntu21:4.2-3ubuntu31:4.2-3ubuntu41:4.2-3ubuntu51:4.2-3ubuntu61:4.2-3ubuntu6.11:4.2-3ubuntu6.21:4.2-3ubuntu6.31:4.2-3ubuntu6.41:4.2-3ubuntu6.51:4.2-3ubuntu6.61:4.2-3ubuntu6.71:4.2-3ubuntu6.81:4.2-3ubuntu6.91:4.2-3ubuntu6.101:4.2-3ubuntu6.11
1:4.2-3ubuntu6.12
qemu
Ubuntu:16.04:LTS
From an advisory covering 6 CVEs
 before 1:2.5+dfsg-5ubuntu10.49, plus listed versions
1:2.3+dfsg-5ubuntu91:2.3+dfsg-5ubuntu101:2.4+dfsg-4ubuntu11:2.4+dfsg-4ubuntu21:2.4+dfsg-4ubuntu3
Show 45 moreShow less
1:2.4+dfsg-5ubuntu31:2.5+dfsg-1ubuntu21:2.5+dfsg-1ubuntu31:2.5+dfsg-1ubuntu41:2.5+dfsg-1ubuntu51:2.5+dfsg-5ubuntu11:2.5+dfsg-5ubuntu21:2.5+dfsg-5ubuntu41:2.5+dfsg-5ubuntu61:2.5+dfsg-5ubuntu71:2.5+dfsg-5ubuntu101:2.5+dfsg-5ubuntu10.11:2.5+dfsg-5ubuntu10.21:2.5+dfsg-5ubuntu10.31:2.5+dfsg-5ubuntu10.41:2.5+dfsg-5ubuntu10.51:2.5+dfsg-5ubuntu10.61:2.5+dfsg-5ubuntu10.71:2.5+dfsg-5ubuntu10.81:2.5+dfsg-5ubuntu10.91:2.5+dfsg-5ubuntu10.101:2.5+dfsg-5ubuntu10.111:2.5+dfsg-5ubuntu10.131:2.5+dfsg-5ubuntu10.141:2.5+dfsg-5ubuntu10.151:2.5+dfsg-5ubuntu10.161:2.5+dfsg-5ubuntu10.201:2.5+dfsg-5ubuntu10.211:2.5+dfsg-5ubuntu10.221:2.5+dfsg-5ubuntu10.241:2.5+dfsg-5ubuntu10.251:2.5+dfsg-5ubuntu10.261:2.5+dfsg-5ubuntu10.281:2.5+dfsg-5ubuntu10.291:2.5+dfsg-5ubuntu10.301:2.5+dfsg-5ubuntu10.311:2.5+dfsg-5ubuntu10.321:2.5+dfsg-5ubuntu10.331:2.5+dfsg-5ubuntu10.341:2.5+dfsg-5ubuntu10.351:2.5+dfsg-5ubuntu10.361:2.5+dfsg-5ubuntu10.371:2.5+dfsg-5ubuntu10.381:2.5+dfsg-5ubuntu10.391:2.5+dfsg-5ubuntu10.40
1:2.5+dfsg-5ubuntu10.49
qemu
Ubuntu:18.04:LTS
From an advisory covering 6 CVEs
 before 1:2.11+dfsg-1ubuntu7.35, plus listed versions
1:2.10+dfsg-0ubuntu31:2.10+dfsg-0ubuntu41:2.10+dfsg-0ubuntu51:2.11+dfsg-1ubuntu11:2.11+dfsg-1ubuntu2
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1:2.11+dfsg-1ubuntu41:2.11+dfsg-1ubuntu51:2.11+dfsg-1ubuntu61:2.11+dfsg-1ubuntu71:2.11+dfsg-1ubuntu7.11:2.11+dfsg-1ubuntu7.21:2.11+dfsg-1ubuntu7.31:2.11+dfsg-1ubuntu7.41:2.11+dfsg-1ubuntu7.51:2.11+dfsg-1ubuntu7.61:2.11+dfsg-1ubuntu7.71:2.11+dfsg-1ubuntu7.81:2.11+dfsg-1ubuntu7.91:2.11+dfsg-1ubuntu7.101:2.11+dfsg-1ubuntu7.121:2.11+dfsg-1ubuntu7.131:2.11+dfsg-1ubuntu7.141:2.11+dfsg-1ubuntu7.151:2.11+dfsg-1ubuntu7.171:2.11+dfsg-1ubuntu7.181:2.11+dfsg-1ubuntu7.191:2.11+dfsg-1ubuntu7.201:2.11+dfsg-1ubuntu7.211:2.11+dfsg-1ubuntu7.221:2.11+dfsg-1ubuntu7.231:2.11+dfsg-1ubuntu7.251:2.11+dfsg-1ubuntu7.261:2.11+dfsg-1ubuntu7.271:2.11+dfsg-1ubuntu7.281:2.11+dfsg-1ubuntu7.291:2.11+dfsg-1ubuntu7.311:2.11+dfsg-1ubuntu7.321:2.11+dfsg-1ubuntu7.331:2.11+dfsg-1ubuntu7.34
1:2.11+dfsg-1ubuntu7.35
qemu
Ubuntu:20.04:LTS
From an advisory covering 6 CVEs
 before 1:4.2-3ubuntu6.12, plus listed versions
1:4.0+dfsg-0ubuntu91:4.0+dfsg-0ubuntu101:4.2-1ubuntu11:4.2-1ubuntu21:4.2-3ubuntu1
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1:4.2-3ubuntu21:4.2-3ubuntu31:4.2-3ubuntu41:4.2-3ubuntu51:4.2-3ubuntu61:4.2-3ubuntu6.11:4.2-3ubuntu6.21:4.2-3ubuntu6.31:4.2-3ubuntu6.41:4.2-3ubuntu6.51:4.2-3ubuntu6.61:4.2-3ubuntu6.71:4.2-3ubuntu6.81:4.2-3ubuntu6.91:4.2-3ubuntu6.101:4.2-3ubuntu6.11
1:4.2-3ubuntu6.12
qemu
openSUSE:Leap 15.2
From an advisory covering 4 CVEs
 before 4.2.1-lp152.9.9.2
4.2.1-lp152.9.9.2
qemu-linux-user
openSUSE:Leap 15.2
From an advisory covering 4 CVEs
 before 4.2.1-lp152.9.9.3
4.2.1-lp152.9.9.3
qemu-testsuite
openSUSE:Leap 15.2
From an advisory covering 4 CVEs
 before 4.2.1-lp152.9.9.5
4.2.1-lp152.9.9.5
qemu
openSUSE:Tumbleweed
From an advisory covering 135 CVEs
 before 6.1.0-32.1
6.1.0-32.1

History

History
RecordedChangedSources
affected, facts
affected, aliases, referencesOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-20181 is a high vulnerability (CVSS 7.5) in Qemu, published February 1, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.33%, the 26th percentile. Fixed in qemu 6.0.0-r1.

References

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This page doesn't list everything

Left out here: 40 versions, 23 references and the rest of 1 source description. The JSON record has them.

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