CVE-2022-50386
18.09.2025, 14:15
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/u3:2/389Enginsight
| Vendor | Product | Version |
|---|---|---|
| linux | linux_kernel | 𝑥 < 4.9.331 |
| linux | linux_kernel | 4.10 ≤ 𝑥 < 4.14.296 |
| linux | linux_kernel | 4.15 ≤ 𝑥 < 4.19.262 |
| linux | linux_kernel | 4.20 ≤ 𝑥 < 5.4.220 |
| linux | linux_kernel | 5.5 ≤ 𝑥 < 5.10.150 |
| linux | linux_kernel | 5.11 ≤ 𝑥 < 5.15.75 |
| linux | linux_kernel | 5.16 ≤ 𝑥 < 5.19.17 |
| linux | linux_kernel | 6.0 ≤ 𝑥 < 6.0.3 |
𝑥
= Vulnerable software versions
Debian Releases
Common Weakness Enumeration
References