CVE-2022-50386

Advisory lineage Upstream: 0 Downstream: 28
Modified
Published: 18 Sept 2025, 13:33
Last modified:11 May 2026, 19:18

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
8 HIGH
v3.1 (cve.org)
EPSS Score
0.05% LOW
0% probability -0.02%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 Sept 2025, 13:33
Published
Vulnerability first disclosed
11 May 2026, 19:18
Last Modified
Vulnerability information updated

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

CVSS Metrics

  • v3.1•HIGH•Score: 8CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.05%• Percentile: 15%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • linux•linux

    ≥ 3df91ea20e744344100b10ae69a17211fcf5b207, < 11e40d6c0823f699d8ad501e48d1c3ae4be386cd | ≥ 3df91ea20e744344100b10ae69a17211fcf5b207, < 843fc4e386dd84b806a7f07fb062d8c3a44e5364 | ≥ 3df91ea20e744344100b10ae69a17211fcf5b207, < d91fc2836562f299f34e361e089e9fe154da4f73 | ≥ 3df91ea20e744344100b10ae69a17211fcf5b207, < 7d6f9cb24d2b2f6b6370eac074e2e6b1bafdad45 | ≥ 3df91ea20e744344100b10ae69a17211fcf5b207, < 0c108cf3ad386e0084277093b55a351c49e0be27 | ≥ 3df91ea20e744344100b10ae69a17211fcf5b207, < d1e894f950ad48897d1a7cb05909ea29d8c3810e | ≥ 3df91ea20e744344100b10ae69a17211fcf5b207, < 6ffde6e03085874ae22263ff4cef4869f797e84f | ≥ 3df91ea20e744344100b10ae69a17211fcf5b207, < 15fc21695eb606bdc5d483b92118ee42610a952d | ≥ 3df91ea20e744344100b10ae69a17211fcf5b207, < 35fcbc4243aad7e7d020b7c1dfb14bb888b20a4f | 3.4

  • linux•linux_kernel

    < 4.9.331 | ≥ 4.10, < 4.14.296 | ≥ 4.15, < 4.19.262 | ≥ 4.20, < 5.4.220 | ≥ 5.5, < 5.10.150 | ≥ 5.11, < 5.15.75 | ≥ 5.16, < 5.19.17 | ≥ 6.0, < 6.0.3

References (9)