CVE - CVE-2022-49304

CVE-ID
CVE-2022-49304	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0976808d0d171ec837d4bd3e9f4ad4a00ab703b8 URL:https://git.kernel.org/stable/c/0976808d0d171ec837d4bd3e9f4ad4a00ab703b8 MISC:https://git.kernel.org/stable/c/09a5958a2452ad22d0cb638711ef34ea1863a829 URL:https://git.kernel.org/stable/c/09a5958a2452ad22d0cb638711ef34ea1863a829 MISC:https://git.kernel.org/stable/c/2cbfc38df580bff5b2fe19f21c1a7520efcc4b3b URL:https://git.kernel.org/stable/c/2cbfc38df580bff5b2fe19f21c1a7520efcc4b3b MISC:https://git.kernel.org/stable/c/34d91e555e5582cffdbcbb75517bc9217866823e URL:https://git.kernel.org/stable/c/34d91e555e5582cffdbcbb75517bc9217866823e MISC:https://git.kernel.org/stable/c/553213432ef0c295becdc08c0207d2094468f673 URL:https://git.kernel.org/stable/c/553213432ef0c295becdc08c0207d2094468f673 MISC:https://git.kernel.org/stable/c/62b2caef400c1738b6d22f636c628d9f85cd4c4c URL:https://git.kernel.org/stable/c/62b2caef400c1738b6d22f636c628d9f85cd4c4c MISC:https://git.kernel.org/stable/c/6e2273eefab54a521d9c59efb6e1114e742bdf41 URL:https://git.kernel.org/stable/c/6e2273eefab54a521d9c59efb6e1114e742bdf41 MISC:https://git.kernel.org/stable/c/85e20f8bd31a46d8c60103d0274a8ebe8f47f2b2 URL:https://git.kernel.org/stable/c/85e20f8bd31a46d8c60103d0274a8ebe8f47f2b2 MISC:https://git.kernel.org/stable/c/920f0ae7a129ffee98a106e3bbdfd61a2a59e939 URL:https://git.kernel.org/stable/c/920f0ae7a129ffee98a106e3bbdfd61a2a59e939
Assigning CNA
kernel.org
Date Record Created
20250226	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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