Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix potential user-after-free This fixes all instances of which requires to allocate a buffer calling alloc_skb which may release the chan lock and reacquire later which makes it possible that the chan is disconnected in the meantime.
References8
- git.kernel.org/stable/c/31a288a4df7f6a28e65da22a4ab2add4a963738e
- git.kernel.org/stable/c/60aaccf16d1e099c16bebfb96428ae762cb528f7
- git.kernel.org/stable/c/64e28ecf44e46de9f01915a4146706a21c3469d2
- git.kernel.org/stable/c/994e3e18908f5c4a12d07b44018e6aa85f071048
- git.kernel.org/stable/c/a6a7d1541fefddf7ca0cfb34c1bff63ff809cc49
- git.kernel.org/stable/c/b2fde8cb2a25125111f2144604e0e7c0ebcc4bba
- git.kernel.org/stable/c/b8ed41cc04fb74005aa51d17865ca3d022760335
- git.kernel.org/stable/c/df5703348813235874d851934e957c3723d71644
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 23 · as of 11 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.