What it is
Linux kernel contains a heap-based buffer overflow vulnerability in the legacy_parse_param function in the Filesystem Context functionality. This allows an attacker to open a filesystem that does not support the Filesystem Context API and ultimately escalate privileges.
What to do
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
Vendor notices and references
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