SB20251210126 - Improper locking in Linux kernel erofs
Published: December 10, 2025 Updated: December 12, 2025
Security Bulletin ID
SB20251210126
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) Improper locking (CVE-ID: CVE-2023-53777)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the z_erofs_init_zip_subsystem(), z_erofs_try_to_claim_pcluster(), z_erofs_register_pcluster(), z_erofs_collector_begin(), z_erofs_do_read_page(), z_erofs_decompress_queue(), z_erofs_decompressqueue_work(), jobqueue_init(), move_to_bypass_jobqueue() and z_erofs_submit_queue() functions in fs/erofs/zdata.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/10c2b98a40d9044a3e97f4697ca6213bad7e19c2
- https://git.kernel.org/stable/c/967c28b23f6c89bb8eef6a046ea88afe0d7c1029
- https://git.kernel.org/stable/c/b5b0d52f00e4bacb0ebdf47cd7016b0485fffad2
- https://git.kernel.org/stable/c/d3b39ea24835ac03da1a30f93ae7c05d55a40191
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.39