SB20251230227 - NULL pointer dereference in Linux kernel f2fs
Published: December 30, 2025 Updated: December 30, 2025
Security Bulletin ID
SB20251230227
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-2023-54192)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the __replace_atomic_write_block() function in fs/f2fs/segment.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/1424358cd66c49460493293497b54cb72e0213cc
- https://git.kernel.org/stable/c/424f8cdc0ad29e4940be96dcc0b935ba497adeda
- https://git.kernel.org/stable/c/da6ea0b050fa720302b56fbb59307e7c7531a342
- https://git.kernel.org/stable/c/e2bbefc1741cb0732c13652be173da02f25611d1
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.3