1. Home
  2. Vulnerabilities
  3. CVE-2022-50386
0.0
NA
CVE-2022-50386
Bluetooth: L2CAP: Fix user-after-free
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

INFO

Published Date :

Sept. 18, 2025, 2:15 p.m.

Last Modified :

Sept. 18, 2025, 2:15 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2022-50386 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

No affected product recoded yet

: Total Affected Vendor : 0 | Products : 0
Solution
Apply kernel updates to fix a use-after-free vulnerability in Bluetooth L2CAP.
  • Update the Linux kernel to the latest version.
  • Apply the provided patch for Bluetooth L2CAP.
  • Reboot the system after applying updates.
  • Verify the fix is applied successfully.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2022-50386.

URL Resource
https://git.kernel.org/stable/c/0c108cf3ad386e0084277093b55a351c49e0be27
https://git.kernel.org/stable/c/11e40d6c0823f699d8ad501e48d1c3ae4be386cd
https://git.kernel.org/stable/c/15fc21695eb606bdc5d483b92118ee42610a952d
https://git.kernel.org/stable/c/35fcbc4243aad7e7d020b7c1dfb14bb888b20a4f
https://git.kernel.org/stable/c/6ffde6e03085874ae22263ff4cef4869f797e84f
https://git.kernel.org/stable/c/7d6f9cb24d2b2f6b6370eac074e2e6b1bafdad45
https://git.kernel.org/stable/c/843fc4e386dd84b806a7f07fb062d8c3a44e5364
https://git.kernel.org/stable/c/d1e894f950ad48897d1a7cb05909ea29d8c3810e
https://git.kernel.org/stable/c/d91fc2836562f299f34e361e089e9fe154da4f73
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2022-50386 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2022-50386 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2022-50386 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2022-50386 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Sep. 18, 2025

    Action Type Old Value New Value
    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
    Added Reference https://git.kernel.org/stable/c/0c108cf3ad386e0084277093b55a351c49e0be27
    Added Reference https://git.kernel.org/stable/c/11e40d6c0823f699d8ad501e48d1c3ae4be386cd
    Added Reference https://git.kernel.org/stable/c/15fc21695eb606bdc5d483b92118ee42610a952d
    Added Reference https://git.kernel.org/stable/c/35fcbc4243aad7e7d020b7c1dfb14bb888b20a4f
    Added Reference https://git.kernel.org/stable/c/6ffde6e03085874ae22263ff4cef4869f797e84f
    Added Reference https://git.kernel.org/stable/c/7d6f9cb24d2b2f6b6370eac074e2e6b1bafdad45
    Added Reference https://git.kernel.org/stable/c/843fc4e386dd84b806a7f07fb062d8c3a44e5364
    Added Reference https://git.kernel.org/stable/c/d1e894f950ad48897d1a7cb05909ea29d8c3810e
    Added Reference https://git.kernel.org/stable/c/d91fc2836562f299f34e361e089e9fe154da4f73
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.