SB20240603108 - Improper locking in Linux kernel f2fs
Published: June 3, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240603108
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-2020-36775)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the f2fs_write_node_pages() function in fs/f2fs/node.c, within the __f2fs_write_data_pages() function in fs/f2fs/data.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/0478ccdc8ea016de1ebaf6fe6da0275c2b258c5b
- https://git.kernel.org/stable/c/8e8542437bb4070423c9754d5ba270ffdbae8c8d
- https://git.kernel.org/stable/c/df77fbd8c5b222c680444801ffd20e8bbc90a56e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.189
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7