CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's ALSA subsystem, specifically in the handling of USB audio devices, where oversized sync packets can exceed the hardware frame limits of the playback endpoint. This can lead to potential denial of service or instability in audio playback. Users and administrators of Linux systems utilizing USB audio devices should prioritize applying the patch to mitigate risks associated with this issue.
Original NVD 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.