CVE-2026-74497
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Clamp frame size in implicit-feedback mode snd_usb_handle_sync_urb() scales received sync packet sizes by the sender's stride and stores the result directly in out_packet->packet_size[i]. If a connected USB device sends an oversized sync packet, this frame count can exceed ep->maxframesize. The un-clamped frame count then propagates to the playback endpoint queue, potentially driving packet transfers beyond the endpoint's hardware frame limits. Cap the calculated frame count against ep->maxframesize in snd_usb_handle_sync_urb() to prevent oversized packets from entering the playback queue.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://git.kernel.org/stable/c/2db4535d6af79276a64449201c5be5feffb31c64
- https://git.kernel.org/stable/c/53f0aa37eb945f3c983f61d12fc35eb33debb8a9
- https://git.kernel.org/stable/c/56ac3e7c90f6b45969c3fd07a98fad760ffd6901
- https://git.kernel.org/stable/c/8d7a30c50c2e58a6839634ed0acde14466d1dc61
- https://git.kernel.org/stable/c/be97fea7451d758881b95af78e900dd0d58a382a
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.