SB2025072921 - Use-after-free in Linux kernel bluetooth
Published: July 29, 2025
Security Bulletin ID
SB2025072921
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2025-38473)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the l2cap_sock_resume_cb() function in net/bluetooth/l2cap_sock.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/6d63901dcd592a1e3f71d7c6d78f9be5e8d7eef0
- https://git.kernel.org/stable/c/a0075accbf0d76c2dad1ad3993d2e944505d99a0
- https://git.kernel.org/stable/c/ac3a8147bb24314fb3e84986590148e79f9872ec
- https://git.kernel.org/stable/c/b97be7ee8a1cd96b89817cbd64a9f5cc16c17d08
- https://git.kernel.org/stable/c/c4f16f6b071a74ac7eefe5c28985285cbbe2cd96