CVE-2022-50374 — Use of Uninitialized Resource in Linux

CWE-908 — Use of Uninitialized ResourceCWE-476 — NULL Pointer Dereference5 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 95.84%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedSep 17

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure syzbot is reporting NULL pointer dereference at hci_uart_tty_close() [1], for rcu_sync_enter() is called without rcu_sync_init() due to hci_uart_tty_open() ignoring percpu_init_rwsem() failure. While we are at it, fix that hci_uart_register_device() ignores percpu_init_rwsem() failure and hci_uart_unregister_device() does not call percpu_free_rwsem().

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶NVDlinux/linux_kernel4.14.63 — 4.15+4
▶Debianlinux/linux_kernel< 5.10.158-1+3
▶CVEListV5linux/linux67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 — d7cc0d51ffcbfd1caaa809fcf9cff05c46d0fb4d+7
▶debiandebian/linux< linux 6.0.3-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
OSV
CVE-2022-50374: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure syzbot is reporti↗2025-09-17
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GHSA
GHSA-jrjj-g8hj-84fg: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure syzbot is repor↗2025-09-17
▶

📋Vendor Advisories

2
Red Hat
kernel: Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure↗2025-09-17
▶
Debian
CVE-2022-50374: linux - In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ...↗2022
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CVE-2022-50374 — Use of Uninitialized Resource in Linux | cvebase