CVE-2026-80960

A flaw was found in the Linux kernel's dm-pcache component. A local attacker with CAP_SYS_ADMIN capabilities can exploit this vulnerability by supplying a specially crafted cache device. The seg_num value, which dictates the size of cache segments, is not adequately validated against the actual device size. This oversight can lead to an out-of-bounds write of 12 KiB into the kernel heap during table load, potentially resulting in a denial of service or other system compromise.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.