SB20260918238 - Improper Null Termination in Linux kernel ufs core driver
Published: September 18, 2026
Security Bulletin ID
SB20260918238
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Null Termination (CVE-ID: CVE-2026-92477)
CWE-ID: CWE-170 - Improper Null Termination
CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause an out-of-bounds read.
The vulnerability exists due to improper null termination in ufs_saved_err_write() when handling a write that fills the input buffer. A local user can write input that fills the stack buffer to cause an out-of-bounds read.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/2b3fb5693c25c21741f357a8c9d0e1f19b7e368f
- https://git.kernel.org/stable/c/587be18e0935632ebd367b0f89e37aa5762e400f
- https://git.kernel.org/stable/c/abd26e6b53c4169122d61fdd4cabe09bdd916aac
- https://git.kernel.org/stable/c/b43890843e834300f967c69e74c7c2eb22cb1664
- https://git.kernel.org/stable/c/cc92af8cc0e4dacd4375d34475141b0f1a70c09e
- https://git.kernel.org/stable/c/d223989e1a1edad217b673486b093bd157fb6c9a