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CVE-2026-74497

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

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.265, 5.15.216, 6.1.183, 6.6.151, 6.12.103, and 2 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    From 28acb12014fb0c3e1edfdab1b1e3e266cf651550 · fixed in 2d39fea6d3c19a2f5811d123114d92e3d0115fd1; From 28acb12014fb0c3e1edfdab1b1e3e266cf651550 · fixed in 09cf3dbbb4256a43feb91d2f51f274510a9ada47; From 28acb12014fb0c3e1edfdab1b1e3e266cf651550 · fixed in cfa8d3e0e8b812c4db4d5241f62b6bdbab2bd7be; From 28acb12014fb0c3e1edfdab1b1e3e266cf651550 · fixed in 56ac3e7c90f6b45969c3fd07a98fad760ffd6901; From 28acb12014fb0c3e1edfdab1b1e3e266cf651550 · fixed in be97fea7451d758881b95af78e900dd0d58a382a; From 28acb12014fb0c3e1edfdab1b1e3e266cf651550 · fixed in 2db4535d6af79276a64449201c5be5feffb31c64; From 28acb12014fb0c3e1edfdab1b1e3e266cf651550 · fixed in 53f0aa37eb945f3c983f61d12fc35eb33debb8a9; From 28acb12014fb0c3e1edfdab1b1e3e266cf651550 · fixed in 8d7a30c50c2e58a6839634ed0acde14466d1dc61

  • Linux Linux

    3.8

  • KernelLinux

    From 3.8.0 · fixed in 5.10.265; From 5.11.0 · fixed in 5.15.216; From 5.16.0 · fixed in 6.1.183; From 6.2.0 · fixed in 6.6.151; From 6.7.0 · fixed in 6.12.103; From 6.13.0 · fixed in 6.18.44; From 6.19.0 · fixed in 7.1.8

References 8

git.kernel.org