Heap-based Buffer Overflow The advisory has been revoked - it doesn't affect any version of package kpatch-patch-5_14_0-70_13_1 (opens in a new tab)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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-KPATCHPATCH514070131-11448137
- published5 Aug 2025
- disclosed11 Mar 2022
Introduced: 11 Mar 2022
CVE-2022-27666 (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 kpatch-patch-5_14_0-70_13_1 package and not the kpatch-patch-5_14_0-70_13_1 package as distributed by RHEL.
A heap buffer overflow flaw was found in IPsec ESP transformation code in net/ipv4/esp4.c and net/ipv6/esp6.c. This flaw allows a local attacker with a normal user privilege to overwrite kernel heap objects and may cause a local privilege escalation threat.
References
- https://access.redhat.com/security/cve/CVE-2022-27666
- https://access.redhat.com/errata/RHSA-2022:5214
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ebe48d368e97d007bfeb76fcb065d6cfc4c96645
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.15
- https://bugzilla.redhat.com/show_bug.cgi?id=2061633
- https://github.com/torvalds/linux/commit/ebe48d368e97d007bfeb76fcb065d6cfc4c96645
- https://security.netapp.com/advisory/ntap-20220429-0001/
- https://www.debian.org/security/2022/dsa-5127
- https://www.debian.org/security/2022/dsa-5173
- https://github.com/plummm/CVE-2022-27666