SB20260912224 - Out-of-bounds read in Linux kernel module
Published: September 12, 2026
Security Bulletin ID
SB20260912224
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) Out-of-bounds read (CVE-ID: CVE-2026-89556)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to access out-of-bounds memory.
The vulnerability exists due to improper validation of string table section header types in the Linux kernel module ELF validation routines when validating string table section headers in an ELF module. A local user can supply an ELF module with SHT_NULL or SHT_NOBITS string table section headers to access out-of-bounds memory.
Remediation
Install update from vendor's website.