CVE-2021-20181

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.
Configurations

Configuration 1 (hide)

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

History

30 Sep 2022, 15:18

Type Values Removed Values Added
CPE cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
References (MLIST) https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html - (MLIST) https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html - Mailing List, Third Party Advisory

05 Sep 2022, 06:15

Type Values Removed Values Added
References
  • (MLIST) https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html -

05 Aug 2022, 16:00

Type Values Removed Values Added
CWE CWE-367
CWE-416
CWE-362

26 Apr 2022, 17:15

Type Values Removed Values Added
References
  • (CONFIRM) https://security.netapp.com/advisory/ntap-20210720-0009/ - Third Party Advisory

04 Jun 2021, 17:05

Type Values Removed Values Added
References (MISC) https://www.zerodayinitiative.com/advisories/ZDI-21-159/ - (MISC) https://www.zerodayinitiative.com/advisories/ZDI-21-159/ - Third Party Advisory, VDB Entry
References (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1927007 - (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1927007 - Issue Tracking, Patch, Third Party Advisory
References (MLIST) https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html - (MLIST) https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html - Mailing List, Third Party Advisory
CVSS v2 : unknown
v3 : unknown
v2 : 6.9
v3 : 7.5
CPE cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
CWE CWE-367
CWE-416

13 May 2021, 16:15

Type Values Removed Values Added
New CVE

Information

Published : 2021-05-13 16:15

Updated : 2022-09-30 15:18


NVD link : CVE-2021-20181

Mitre link : CVE-2021-20181


JSON object : View

Products Affected

debian

  • debian_linux

qemu

  • qemu
CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')