CVE - CVE-2024-56531

CVE-ID
CVE-2024-56531	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: 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
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/237f3faf0177bdde728fa3106d730d806436aa4d URL:https://git.kernel.org/stable/c/237f3faf0177bdde728fa3106d730d806436aa4d MISC:https://git.kernel.org/stable/c/3993edf44d3df7b6e8c753eac6ac8783473fcbab URL:https://git.kernel.org/stable/c/3993edf44d3df7b6e8c753eac6ac8783473fcbab MISC:https://git.kernel.org/stable/c/4507a8b9b30344c5ddd8219945f446d47e966a6d URL:https://git.kernel.org/stable/c/4507a8b9b30344c5ddd8219945f446d47e966a6d MISC:https://git.kernel.org/stable/c/4dd821dcbfcecf7af6a08370b0b217cde2818acf URL:https://git.kernel.org/stable/c/4dd821dcbfcecf7af6a08370b0b217cde2818acf MISC:https://git.kernel.org/stable/c/a3f9314752dbb6f6aa1f0f2b4c58243bda800738 URL:https://git.kernel.org/stable/c/a3f9314752dbb6f6aa1f0f2b4c58243bda800738 MISC:https://git.kernel.org/stable/c/b04dcbb7f7b1908806b7dc22671cdbe78ff2b82c URL:https://git.kernel.org/stable/c/b04dcbb7f7b1908806b7dc22671cdbe78ff2b82c MISC:https://git.kernel.org/stable/c/cadf1d8e9ddcd74584ec961aeac14ac549b261d8 URL:https://git.kernel.org/stable/c/cadf1d8e9ddcd74584ec961aeac14ac549b261d8 MISC:https://git.kernel.org/stable/c/dd0de8cb708951cebf727aa045e8242ba651bb52 URL:https://git.kernel.org/stable/c/dd0de8cb708951cebf727aa045e8242ba651bb52 MISC:https://git.kernel.org/stable/c/ebad462eec93b0f701dfe4de98990e7355283801 URL:https://git.kernel.org/stable/c/ebad462eec93b0f701dfe4de98990e7355283801
Assigning CNA
kernel.org
Date Record Created
20241227	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 (20241227)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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