Out-of-bounds Write The advisory has been revoked - it doesn't affect any version of package kernel-tools (opens in a new tab)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-RHEL9-KERNELTOOLS-9496180
- published21 Mar 2025
- disclosed8 Jul 2022
Introduced: 8 Jul 2022
CVE-2021-33655 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-tools package and not the kernel-tools package as distributed by RHEL.
When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.
References
- https://access.redhat.com/security/cve/CVE-2021-33655
- http://www.openwall.com/lists/oss-security/2022/07/19/2
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=086ff84617185393a0bbf25830c4f36412a7d3f4
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
- https://www.debian.org/security/2022/dsa-5191