IT

Tracker / CVE-2024-56531

CVE-2024-56531

High 7.8

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.

Affected products and versions

linux linux_kernel · 2.6.22 → 4.19.325
linux linux_kernel · 4.20 → 5.4.287
linux linux_kernel · 5.11 → 5.15.174
linux linux_kernel · 5.16 → 6.1.120
linux linux_kernel · 5.5 → 5.10.231
linux linux_kernel · 6.12 → 6.12.2
linux linux_kernel · 6.2 → 6.6.64
linux linux_kernel · 6.7 → 6.11.11

Analysis

This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.

References