SB20241230176 - NULL pointer dereference in Linux kernel cachefiles
Published: December 30, 2024 Updated: May 11, 2025
Security Bulletin ID
SB20241230176
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-2024-56549)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the cachefiles_ondemand_fd_write_iter() and cachefiles_ondemand_fd_llseek() functions in fs/cachefiles/ondemand.c, within the cachefiles_commit_object() and cachefiles_clean_up_object() functions in fs/cachefiles/interface.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.