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CVE-2026-74497

ALSA: usb-audio: Clamp frame size in implicit-feedback mode PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 28acb12014fb0c3e1edfdab1b1e3e266cf651550 before 2d39fea6d3c19a2f5811d123114d92e3d0115fd1; affected 28acb12014fb0c3e1edfdab1b1e3e266cf651550 before 09cf3dbbb4256a43feb91d2f51f274510a9ada47; affected 28acb12014fb0c3e1edfdab1b1e3e266cf651550 before cfa8d3e0e8b812c4db4d5241f62b6bdbab2bd7be; affected 28acb12014fb0c3e1edfdab1b1e3e266cf651550 before 56ac3e7c90f6b45969c3fd07a98fad760ffd6901; affected 28acb12014fb0c3e1edfdab1b1e3e266cf651550 before be97fea7451d758881b95af78e900dd0d58a382a; affected 28acb12014fb0c3e1edfdab1b1e3e266cf651550 before 2db4535d6af79276a64449201c5be5feffb31c64; affected 28acb12014fb0c3e1edfdab1b1e3e266cf651550 before 53f0aa37eb945f3c983f61d12fc35eb33debb8a9; affected 28acb12014fb0c3e1edfdab1b1e3e266cf651550 before 8d7a30c50c2e58a6839634ed0acde14466d1dc61
Linux / Linuxaffected 3.8; unaffected 0 before 3.8; unaffected 5.10.265 through 5.10.*; unaffected 5.15.216 through 5.15.*; unaffected 6.1.183 through 6.1.*; unaffected 6.6.151 through 6.6.*; unaffected 6.12.103 through 6.12.*; unaffected 6.18.44 through 6.18.*; unaffected 7.1.8 through 7.1.*; unaffected 7.2 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.