Buffer Overflow Affecting qemu package, versions <1:2.11+dfsg-1ubuntu7.40
Threat Intelligence
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-UBUNTU1804-QEMU-2442333
- published 7 Apr 2022
- disclosed 29 Apr 2022
How to fix?
Upgrade Ubuntu:18.04 qemu to version 1:2.11+dfsg-1ubuntu7.40 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 Ubuntu.
See How to fix? for Ubuntu:18.04 relevant fixed versions and status.
A flaw was found in the QXL display device emulation in QEMU. An integer overflow in the cursor_alloc() function can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. This flaw allows a malicious privileged guest user to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2021-4206
- https://bugzilla.redhat.com/show_bug.cgi?id=2036998
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
- https://security.gentoo.org/glsa/202208-27
- https://starlabs.sg/advisories/21-4206/
- https://www.debian.org/security/2022/dsa-5133