CVE-2022-50386
published 2025-09-18CVE-2022-50386: 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…
PriorityP342high8CVSS 3.1
AVAACLPRLUINSUCHIHAH
EPSS
0.33%
25.6th percentile
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
23 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.0.3-1 (bookworm) | linux 6.0.3-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 3df91ea20e744344100b10ae69a17211fcf5b207 < 11e40d6c0823f699d8ad501e48d1c3ae4be386cd | 11e40d6c0823f699d8ad501e48d1c3ae4be386cd |
| linux | linux | >= 3df91ea20e744344100b10ae69a17211fcf5b207 < 843fc4e386dd84b806a7f07fb062d8c3a44e5364 | 843fc4e386dd84b806a7f07fb062d8c3a44e5364 |
| linux | linux | >= 3df91ea20e744344100b10ae69a17211fcf5b207 < d91fc2836562f299f34e361e089e9fe154da4f73 | d91fc2836562f299f34e361e089e9fe154da4f73 |
| linux | linux | >= 3df91ea20e744344100b10ae69a17211fcf5b207 < 7d6f9cb24d2b2f6b6370eac074e2e6b1bafdad45 | 7d6f9cb24d2b2f6b6370eac074e2e6b1bafdad45 |
| linux | linux | >= 3df91ea20e744344100b10ae69a17211fcf5b207 < 0c108cf3ad386e0084277093b55a351c49e0be27 | 0c108cf3ad386e0084277093b55a351c49e0be27 |
| linux | linux | >= 3df91ea20e744344100b10ae69a17211fcf5b207 < d1e894f950ad48897d1a7cb05909ea29d8c3810e | d1e894f950ad48897d1a7cb05909ea29d8c3810e |
| linux | linux | >= 3df91ea20e744344100b10ae69a17211fcf5b207 < 6ffde6e03085874ae22263ff4cef4869f797e84f | 6ffde6e03085874ae22263ff4cef4869f797e84f |
| linux | linux | >= 3df91ea20e744344100b10ae69a17211fcf5b207 < 15fc21695eb606bdc5d483b92118ee42610a952d | 15fc21695eb606bdc5d483b92118ee42610a952d |
| linux | linux | >= 3df91ea20e744344100b10ae69a17211fcf5b207 < 35fcbc4243aad7e7d020b7c1dfb14bb888b20a4f | 35fcbc4243aad7e7d020b7c1dfb14bb888b20a4f |
| linux | linux_kernel | < 4.9.331 | 4.9.331 |
| linux | linux_kernel | >= 0 < 5.10.158-1 | 5.10.158-1 |
| linux | linux_kernel | >= 0 < 6.0.3-1 | 6.0.3-1 |
| linux | linux_kernel | >= 0 < 6.0.3-1 | 6.0.3-1 |
| linux | linux_kernel | >= 0 < 6.0.3-1 | 6.0.3-1 |
| linux | linux_kernel | >= 4.10 < 4.14.296 | 4.14.296 |
| linux | linux_kernel | >= 4.15 < 4.19.262 | 4.19.262 |
| linux | linux_kernel | >= 4.20 < 5.4.220 | 5.4.220 |
| linux | linux_kernel | >= 5.11 < 5.15.75 | 5.15.75 |
| linux | linux_kernel | >= 5.16 < 5.19.17 | 5.19.17 |
| linux | linux_kernel | >= 5.5 < 5.10.150 | 5.10.150 |
| linux | linux_kernel | >= 6.0 < 6.0.3 | 6.0.3 |
CVSS provenance
nvdv3.18.0HIGHCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv8.0HIGH
vendor_debian8.0HIGH
vendor_redhat8.0HIGH
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Red Hat
kernel: Bluetooth: L2CAP: Fix user-after-free
vendor_redhat·2025-09-18·CVSS 8.0
CVE-2022-50386 [HIGH] kernel: Bluetooth: L2CAP: Fix user-after-free
kernel: Bluetooth: L2CAP: Fix user-after-free
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
Statement: A use-after-free in the Bluetooth L2CAP subsystem could occu
Debian
CVE-2022-50386: linux - In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ...
vendor_debian·2022·CVSS 8.0
CVE-2022-50386 [HIGH] CVE-2022-50386: linux - In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ...
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
Scope: local
bookworm: resolved (fixed in 6.0.3-1)
b
OSV
CVE-2022-50386: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix user-after-free This uses l2cap_chan_hold_unless_zero() afte
osv·2025-09-18·CVSS 8.0
CVE-2022-50386 [HIGH] CVE-2022-50386: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix user-after-free This uses l2cap_chan_hold_unless_zero() afte
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
GHSA
GHSA-q9hj-m4q6-fcrh: In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: Fix user-after-free
This uses l2cap_chan_hold_unless_zero() af
ghsa_unreviewed·2025-09-18
CVE-2022-50386 [HIGH] CWE-416 GHSA-q9hj-m4q6-fcrh: In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: Fix user-after-free
This uses l2cap_chan_hold_unless_zero() af
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
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/0c108cf3ad386e0084277093b55a351c49e0be27https://git.kernel.org/stable/c/11e40d6c0823f699d8ad501e48d1c3ae4be386cdhttps://git.kernel.org/stable/c/15fc21695eb606bdc5d483b92118ee42610a952dhttps://git.kernel.org/stable/c/35fcbc4243aad7e7d020b7c1dfb14bb888b20a4fhttps://git.kernel.org/stable/c/6ffde6e03085874ae22263ff4cef4869f797e84fhttps://git.kernel.org/stable/c/7d6f9cb24d2b2f6b6370eac074e2e6b1bafdad45https://git.kernel.org/stable/c/843fc4e386dd84b806a7f07fb062d8c3a44e5364https://git.kernel.org/stable/c/d1e894f950ad48897d1a7cb05909ea29d8c3810ehttps://git.kernel.org/stable/c/d91fc2836562f299f34e361e089e9fe154da4f73
2025-09-18
Published