Off-by-one in Linux kernel - CVE-2026-81012
Published: September 12, 2026
Vulnerability identifier: #VU149376
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-81012
CWE-ID: CWE-193
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform an out-of-bounds write.
The vulnerability exists due to an off-by-one error in hp_get_string_from_buffer() in the hp-bioscfg driver when converting a string whose length equals the destination buffer size. A local user can cause the function to process such a string to perform an out-of-bounds write.
Affected software
Linux kernel
How to mitigate CVE-2026-81012
Install security update from vendor's repository.