SB20251230161 - Use-after-free in Linux kernel bluetooth
Published: December 30, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251230161
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-2023-54214)
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_alloc_skb_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/31a288a4df7f6a28e65da22a4ab2add4a963738e
- https://git.kernel.org/stable/c/60aaccf16d1e099c16bebfb96428ae762cb528f7
- https://git.kernel.org/stable/c/64e28ecf44e46de9f01915a4146706a21c3469d2
- https://git.kernel.org/stable/c/994e3e18908f5c4a12d07b44018e6aa85f071048
- https://git.kernel.org/stable/c/a6a7d1541fefddf7ca0cfb34c1bff63ff809cc49
- https://git.kernel.org/stable/c/b2fde8cb2a25125111f2144604e0e7c0ebcc4bba
- https://git.kernel.org/stable/c/b8ed41cc04fb74005aa51d17865ca3d022760335
- https://git.kernel.org/stable/c/df5703348813235874d851934e957c3723d71644
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.308
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.276
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.173
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.99
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.235
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3