Allocation of Resources Without Limits or Throttling The advisory has been revoked - it doesn't affect any version of package kernel-headers (opens in a new tab)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-KERNELHEADERS-4254567
- published2 Aug 2021
- disclosed2 Aug 2021
Introduced: 2 Aug 2021
CVE-2021-3669 (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 kernel-headers package and not the kernel-headers package as distributed by RHEL.
A flaw was found in the Linux kernel. Measuring usage of the shared memory does not scale with large shared memory segment counts which could lead to resource exhaustion and DoS.
References
- https://access.redhat.com/security/cve/CVE-2021-3669
- https://access.redhat.com/errata/RHSA-2022:1988
- https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1980619
- https://bugzilla.redhat.com/show_bug.cgi?id=1986473
- https://security-tracker.debian.org/tracker/CVE-2021-3669