Out-of-bounds read in Linux kernel - CVE-2026-80985
Published: September 12, 2026
Vulnerability identifier: #VU149402
CSH Severity: Medium
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80985
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to delete registered remote tokens or install remote tokens.
The vulnerability exists due to an out-of-bounds read in the SMC-Rv2 LLC message queue handling when processing oversized SMC-Rv2 DELETE_RKEY_V2 or ADD_LINK messages. A remote attacker can send a crafted SMC-Rv2 LLC message to delete registered remote tokens or install remote tokens.
Affected software
Linux kernel
How to mitigate CVE-2026-80985
Install security update from vendor's repository.