Integer Overflow or Wraparound The advisory has been revoked - it doesn't affect any version of package qemu-kvm-block-rbd (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL8-QEMUKVMBLOCKRBD-2439963
- published2 Apr 2022
- disclosed28 Mar 2022
Introduced: 28 Mar 2022
CVE-2021-4206 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu-kvm-block-rbd package and not the qemu-kvm-block-rbd package as distributed by RHEL.
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
- https://access.redhat.com/security/cve/CVE-2021-4206
- https://access.redhat.com/errata/RHSA-2022:5821
- 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