CVE-2024-50205

Summary

In the Linux kernel, the following vulnerability has been resolved: ALSA: firewire-lib: Avoid division by zero in apply_constraint_to_size() The step variable is initialized to zero. It is changed in the loop, but if it's not changed it will remain zero. Add a variable check before the division. The observed behavior was introduced by commit 826b5de90c0b ("ALSA: firewire-lib: fix insufficient PCM rule for period/buffer size"), and it is difficult to show that any of the interval parameters will satisfy the snd_interval_test() condition with data from the amdtp_rate_table[] table. Found by Linux Verification Center (linuxtesting.org) with SVACE.

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/3452d39c4704aa12504e4190298c721fb01083c3 ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/3452d39c4704aa12504e4190298c721fb01083c3Patch
• https://git.kernel.org/stable/c/4bdc21506f12b2d432b1f2667e5ff4c75eee58e3Patch
• https://git.kernel.org/stable/c/5e431f85c87bbffd93a9830d5a576586f9855291Patch
• https://git.kernel.org/stable/c/72cafe63b35d06b5cfbaf807e90ae657907858daPatch
• https://git.kernel.org/stable/c/7d4eb9e22131ec154e638cbd56629195c9bcbe9aPatch
• https://git.kernel.org/stable/c/d2826873db70a6719cdd9212a6739f3e6234cfc4Patch
• https://git.kernel.org/stable/c/d575414361630b8b0523912532fcd7c79e43468cPatch
• https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html