SB20260912380 - Out-of-bounds read in Linux kernel smc
Published: September 12, 2026
Security Bulletin ID
SB20260912380
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-80985)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 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]
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.
Remediation
Install update from vendor's website.