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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2024-38600 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: Fix deadlocks with kctl removals at disconnection In snd_card_disconnect(), we set card->shutdown flag at the beginning, call callbacks and do sync for card->power_ref_sleep waiters at the end. The callback may delete a kctl element, and this can lead to a deadlock when the device was in the suspended state. Namely: * A process waits for the power up at snd_power_ref_and_wait() in snd_ctl_info() or read/write() inside card->controls_rwsem. * The system gets disconnected meanwhile, and the driver tries to delete a kctl via snd_ctl_remove*(); it tries to take card->controls_rwsem again, but this is already locked by the above. Since the sleeper isn't woken up, this deadlocks. An easy fix is to wake up sleepers before processing the driver disconnect callbacks but right after setting the card->shutdown flag. Then all sleepers will abort immediately, and the code flows again. So, basically this patch moves the wait_event() call at the right timing. While we're at it, just to be sure, call wait_event_all() instead of wait_event(), although we don't use exclusive events on this queue for now.


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/2f103287ef7960854808930499d1181bd0145d68 Patch 
https://git.kernel.org/stable/c/6b55e879e7bd023a03888fc6c8339edf82f576f4 Patch 
https://git.kernel.org/stable/c/87988a534d8e12f2e6fc01fe63e6c1925dc5307c Patch 
https://git.kernel.org/stable/c/88ce3fe255d58a93624b467af036dc3519f309c7 Patch 
https://git.kernel.org/stable/c/c2fb439f4f1425a961d20bec818fed2c2d9ef70a Patch 
https://git.kernel.org/stable/c/ff80185e7b7b547a0911fcfc8aefc61c3e8304d7 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-2024-38600
NVD Published Date:
06/19/2024
NVD Last Modified:
08/27/2024
Source:
kernel.org