SB20250422115 - Improper locking in Linux kernel f2fs

Description

This security bulletin contains information about 1 security vulnerability.

1) Improper locking (CVE-ID: CVE-2025-23132)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the f2fs_sync_fs(), f2fs_remount(), limit_reserve_root(), f2fs_quota_sync(), f2fs_quota_on(), __f2fs_quota_off(), f2fs_quota_off(), f2fs_dquot_initialize(), f2fs_update_time() and kill_f2fs_super() functions in fs/f2fs/super.c, within the block_operations(), f2fs_unlock_all() and f2fs_issue_checkpoint() functions in fs/f2fs/checkpoint.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/d7acf0a6c87aa282c86a36dbaa2f92fda88c5884
• https://git.kernel.org/stable/c/eb85c2410d6f581e957cd03a644ff6ddbe592af9
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14.2