Allocation of Resources Without Limits or Throttling The advisory has been revoked - it doesn't affect any version of package kernel-headers (opens in a new tab)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-CENTOS8-KERNELHEADERS-1969380
- published1 Sept 2021
- disclosed15 Jul 2021
Introduced: 15 Jul 2021
CVE-2021-3759 (opens in a new tab)Amendment
The Centos security team deemed this advisory irrelevant for Centos: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 Centos.
A memory overflow vulnerability was found in the Linux kernel’s ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability.
References
- https://access.redhat.com/security/cve/CVE-2021-3759
- https://access.redhat.com/errata/RHSA-2022:1988
- https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive@gmail.com/
- https://bugzilla.redhat.com/show_bug.cgi?id=1999675
- https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html
- https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive%40gmail.com/