SB2025091989 - NULL pointer dereference in Linux kernel f2fs
Published: September 19, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091989
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) NULL pointer dereference (CVE-ID: CVE-2023-53447)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the f2fs_show_options(), default_options(), f2fs_remount() and f2fs_fill_super() functions in fs/f2fs/super.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/115557cc226a927924f2d7d1980ccbf6e3b3bb36
- https://git.kernel.org/stable/c/458c15dfbce62c35fefd9ca637b20a051309c9f1
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.45
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.49
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5