CVE-2026-53266: Linux Kernel
Linux Kernel contains an out-of-bounds write vulnerability in the ebtables SNAT target which allows an ARP sender hardware address rewrite to write directly into a nonlinear socket-buffer fragment backed by a splice-imported file page. The impacted product(s) could be end-of-life (EoL) and/or end-of-service (EoS). Users are advised to discontinue use and/or transition to a supported version.
- Vendor
- Linux
- Product
- Kernel
- Vulnerability
- Linux Kernel Out-of-Bounds Write Vulnerability
- Date added
- Sep 18, 2026
- CISA due date (U.S. federal agencies)
- Sep 21, 2026
- Known ransomware campaign use
- Unknown
- Weakness (CWE)
- CWE-787
References
- NVD — CVE-2026-53266
- git.kernel.org
- git.kernel.org
- git.kernel.org
- git.kernel.org
- git.kernel.org
- git.kernel.org
- git.kernel.org
- git.kernel.org
This site summarizes CISA's catalog for information only. It is not security advice — follow your vendor's guidance and official advisories.
Last updated: · Catalog version 2026.10.02