In the Linux kernel, the following vulnerability has been resolved:
ALSA: caiaq: Use snd_card_free_when_closed() at disconnection
The USB disconnect callback is supposed to be short and not too-long
waiting. OTOH, the current code uses snd_card_free() at
disconnection, but this waits for the close of all used fds, hence it
can take long. It eventually blocks the upper layer USB ioctls, which
may trigger a soft lockup.
An easy workaround is to replace snd_card_free() with
snd_card_free_when_closed(). This variant returns immediately while
the release of resources is done asynchronously by the card device
release at the last close.
This patch also splits the code to the disconnect and the free phases;
the former is called immediately at the USB disconnect callback while
the latter is called from the card destructor.
References
Configurations
Configuration 1 (hide)
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History
03 Nov 2025, 21:17
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Information
Published : 2024-12-27 14:15
Updated : 2025-11-03 21:17
NVD link : CVE-2024-56531
Mitre link : CVE-2024-56531
CVE.ORG link : CVE-2024-56531
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-667
Improper Locking