Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix user-after-free This uses l2cap_chan_hold_unless_zero() after calling __l2cap_get_chan_blah() to prevent the following trace: Bluetooth: l2cap_core.c:static void l2cap_chan_destroy(struct kref *kref) Bluetooth: chan 0000000023c4974d Bluetooth: parent 00000000ae861c08 ================================================================== BUG: KASAN: use-after-free in __mutex_waiter_is_first kernel/locking/mutex.c:191 [inline] BUG: KASAN: use-after-free in __mutex_lock_common kernel/locking/mutex.c:671 [inline] BUG: KASAN: use-after-free in __mutex_lock+0x278/0x400 kernel/locking/mutex.c:729 Read of size 8 at addr ffff888006a49b08 by task kworker/u3:2/389
Affected products
linux: linux kernel
References9
- git.kernel.org/stable/c/0c108cf3ad386e0084277093b55a351c49e0be27 Patch
- git.kernel.org/stable/c/11e40d6c0823f699d8ad501e48d1c3ae4be386cd Patch
- git.kernel.org/stable/c/15fc21695eb606bdc5d483b92118ee42610a952d Patch
- git.kernel.org/stable/c/35fcbc4243aad7e7d020b7c1dfb14bb888b20a4f Patch
- git.kernel.org/stable/c/6ffde6e03085874ae22263ff4cef4869f797e84f Patch
- git.kernel.org/stable/c/7d6f9cb24d2b2f6b6370eac074e2e6b1bafdad45 Patch
- git.kernel.org/stable/c/843fc4e386dd84b806a7f07fb062d8c3a44e5364 Patch
- git.kernel.org/stable/c/d1e894f950ad48897d1a7cb05909ea29d8c3810e Patch
- git.kernel.org/stable/c/d91fc2836562f299f34e361e089e9fe154da4f73 Patch
Metrics
- CVSS 3.1
-
8.0
HIGH
Score source: NVD
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 31 · as of 8 November 2026
- CWE
- CWE-416
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