SB20251028102 - NULL pointer dereference in Linux kernel trace
Published: October 28, 2025
Security Bulletin ID
SB20251028102
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-2025-40042)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the uprobe_dispatcher() and uretprobe_dispatcher() functions in kernel/trace/trace_uprobe.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/0fa388ab2c290ef1115ff88ae88e881d0fb2db02
- https://git.kernel.org/stable/c/1a301228c0a8aedc3154fb1a274456f487416b96
- https://git.kernel.org/stable/c/5ebea6561649d30ec7a18fea23d7f76738dae916
- https://git.kernel.org/stable/c/95dd33361061f808d1f68616d69ada639e737cfa
- https://git.kernel.org/stable/c/9cf9aa7b0acfde7545c1a1d912576e9bab28dc6f
- https://git.kernel.org/stable/c/a6e89ada1ff6b70df73f579071ffa6ade8ae7f98