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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2022-49304 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-667 Improper Locking cwe source acceptance level NIST  

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-49304
NVD Published Date:
02/26/2025
NVD Last Modified:
04/14/2025
Source:
kernel.org