CVE-2022-49304

MEDIUM EPSS 8.4%
Published Feb 26, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
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Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: drivers: tty: serial: Fix deadlock in sa1100_set_termios() There is a deadlock in sa1100_set_termios(), which is shown below: (Thread 1) | (Thread 2) | sa1100_enable_ms() sa1100_set_termios() | mod_timer() spin_lock_irqsave() //(1) | (wait a time) ... | sa1100_timeout() del_timer_sync() | spin_lock_irqsave() //(2) (wait timer to stop) | ... We hold sport->port.lock in position (1) of thread 1 and use del_timer_sync() to wait timer to stop, but timer handler also need sport->port.lock in position (2) of thread 2. As a result, sa1100_set_termios() will block forever. This patch moves del_timer_sync() before spin_lock_irqsave() in order to prevent the deadlock.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
8.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-667

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel* <4.9.318
linuxlinux_kernel*≥4.10  –  <4.14.283
linuxlinux_kernel*≥4.15  –  <4.19.247
linuxlinux_kernel*≥4.20  –  <5.4.198
linuxlinux_kernel*≥5.5  –  <5.10.122
linuxlinux_kernel*≥5.11  –  <5.15.47
linuxlinux_kernel*≥5.16  –  <5.17.15
linuxlinux_kernel*≥5.18  –  <5.18.4

References 9

  • git.kernel.org https://git.kernel.org/stable/c/0976808d0d171ec837d4bd3e9f4ad4a00ab703b8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/09a5958a2452ad22d0cb638711ef34ea1863a829
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2cbfc38df580bff5b2fe19f21c1a7520efcc4b3b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/34d91e555e5582cffdbcbb75517bc9217866823e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/553213432ef0c295becdc08c0207d2094468f673
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/62b2caef400c1738b6d22f636c628d9f85cd4c4c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6e2273eefab54a521d9c59efb6e1114e742bdf41
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/85e20f8bd31a46d8c60103d0274a8ebe8f47f2b2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/920f0ae7a129ffee98a106e3bbdfd61a2a59e939
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0976808d0d171ec837d4bd3e9f4ad4a00ab703b8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/09a5958a2452ad22d0cb638711ef34ea1863a829
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2cbfc38df580bff5b2fe19f21c1a7520efcc4b3b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/34d91e555e5582cffdbcbb75517bc9217866823e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/553213432ef0c295becdc08c0207d2094468f673
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/62b2caef400c1738b6d22f636c628d9f85cd4c4c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6e2273eefab54a521d9c59efb6e1114e742bdf41
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/85e20f8bd31a46d8c60103d0274a8ebe8f47f2b2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/920f0ae7a129ffee98a106e3bbdfd61a2a59e939
    Patch