What it is
Linux Kernel contains a heap out-of-bounds write vulnerability that could allow an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vendor notices and references
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c
- security.netapp.com/advisory/ntap-20210805-0010/
- github.com/google/security-research/security/advisories/GHSA-xxx5-8mvq-3528
- nvd.nist.gov/vuln/detail/CVE-2021-22555
Description and required action as published by CISA. Full record at NVD.
Other Linux entries on the list
- Kernel Linux Kernel Missing Initialization of a Variable Vulnerability CVE-2026-46300 · Oct 28, 2026
- Kernel Linux Kernel Out-of-Bounds Write Vulnerability CVE-2026-53266 · Sep 18, 2026
- Kernel Linux Kernel Race Condition Vulnerability CVE-2025-39964 · Sep 18, 2026
- Kernel Linux Kernel Improper Check for Unusual or Exceptional Conditions Vulnerability CVE-2025-39682 · Sep 18, 2026
- Kernel Linux Kernel Unspecified Vulnerability CVE-2026-53362 · Aug 27, 2026
- Kernel Linux Kernel Out-of-Bounds Write Vulnerability CVE-2022-0995 · Aug 26, 2026