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

Metrics

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

No data.

No data.

No data.

No data.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/0c108cf3ad386e0084277093b55a351c49e0be27 cve-icon cve-icon
https://git.kernel.org/stable/c/11e40d6c0823f699d8ad501e48d1c3ae4be386cd cve-icon cve-icon
https://git.kernel.org/stable/c/15fc21695eb606bdc5d483b92118ee42610a952d cve-icon cve-icon
https://git.kernel.org/stable/c/35fcbc4243aad7e7d020b7c1dfb14bb888b20a4f cve-icon cve-icon
https://git.kernel.org/stable/c/6ffde6e03085874ae22263ff4cef4869f797e84f cve-icon cve-icon
https://git.kernel.org/stable/c/7d6f9cb24d2b2f6b6370eac074e2e6b1bafdad45 cve-icon cve-icon
https://git.kernel.org/stable/c/843fc4e386dd84b806a7f07fb062d8c3a44e5364 cve-icon cve-icon
https://git.kernel.org/stable/c/d1e894f950ad48897d1a7cb05909ea29d8c3810e cve-icon cve-icon
https://git.kernel.org/stable/c/d91fc2836562f299f34e361e089e9fe154da4f73 cve-icon cve-icon
History

Thu, 18 Sep 2025 13:45:00 +0000

Type Values Removed Values Added
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
Title Bluetooth: L2CAP: Fix user-after-free
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-09-18T13:33:07.191Z

Reserved: 2025-09-17T14:53:06.997Z

Link: CVE-2022-50386

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-09-18T14:15:37.480

Modified: 2025-09-18T14:15:37.480

Link: CVE-2022-50386

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.