SB2025092228 - NULL pointer dereference in Linux kernel ocfs2
Published: September 22, 2025
Security Bulletin ID
SB2025092228
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-2025-39842)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the ocfs2_clear_inode() function in fs/ocfs2/inode.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/42c415c53ad2065088cc411d08925effa5b3d255
- https://git.kernel.org/stable/c/85e66331b60601d903cceaf8c10a234db863cd78
- https://git.kernel.org/stable/c/e9188f66e94955431ddbe2cd1cdf8ff2bb486abf
- https://git.kernel.org/stable/c/f46e8ef8bb7b452584f2e75337b619ac51a7cadf
- https://git.kernel.org/stable/c/f4a917e6cd6c798f7adf39907f117fc754db1283