Use After Free Affecting qemu package, versions <1:3.1+dfsg-8+deb10u9
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Test your applications- Snyk ID SNYK-DEBIAN10-QEMU-1066313
- published 2 Feb 2021
- disclosed 13 May 2021
How to fix?
Upgrade Debian:10
qemu
to version 1:3.1+dfsg-8+deb10u9 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu
package and not the qemu
package as distributed by Debian
.
See How to fix?
for Debian:10
relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2021-20181
- https://bugzilla.redhat.com/show_bug.cgi?id=1927007
- https://www.zerodayinitiative.com/advisories/ZDI-21-159/
- https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html
- https://security.netapp.com/advisory/ntap-20210720-0009/
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html