- Vulnerability/
- CVE-2024-56533
CVE-2024-56533: ALSA: usx2y: Use snd_card_free_when_closed() at disconnection
First published: Fri Dec 27 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: ALSA: usx2y: 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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux kernel | ||
| debian/linux | <=5.10.223-1<=5.10.226-1 | 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 |
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Reference Links
- https://git.kernel.org/stable/c/24fe9f7ca83ec9acf765339054951f5cd9ae5c5d
- https://git.kernel.org/stable/c/7bd8838c0ea886679a32834fdcacab296d072fbe
- https://git.kernel.org/stable/c/befcca1777525e37c659b4129d8ac7463b07ef67
- https://git.kernel.org/stable/c/dafb28f02be407e07a6f679e922a626592b481b0
- https://git.kernel.org/stable/c/e07605d855c4104d981653146a330ea48f6266ed
- https://git.kernel.org/stable/c/e869642a77a9b3b98b0ab2c8fec7af4385140909
- https://git.kernel.org/stable/c/ffbfc6c4330fc233698529656798bee44fea96f5
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-56533
- https://nvd.nist.gov/vuln/detail/CVE-2024-56533
- https://launchpad.net/bugs/cve/CVE-2024-56533
- https://security-tracker.debian.org/tracker/CVE-2024-56533
- https://ubuntu.com/security/CVE-2024-56533
- https://git.kernel.org/linus/dafb28f02be407e07a6f679e922a626592b481b0
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