SB2025120461 - Out-of-bounds read in Linux kernel erofs
Published: December 4, 2025
Security Bulletin ID
SB2025120461
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2025-40241)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the z_erofs_map_blocks_ext() and z_erofs_map_sanity_check() functions in fs/erofs/zmap.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.