SB20260928286 - Out-of-bounds write in Linux kernel ufs
Published: September 28, 2026 Updated: September 30, 2026
Security Bulletin ID
SB20260928286
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2026-97926)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause an out-of-bounds memory access.
The vulnerability exists due to improper validation of cylinder group metadata in ufs_read_cylinder() when processing a crafted UFS filesystem image. A remote attacker can provide malformed cylinder group metadata to cause an out-of-bounds memory access.
User interaction is required.
Remediation
Install update from vendor's website.