Answer in brief
CVE-2026-74497 records a High severity (CVSS 8.4) vulnerability in ALSA: usb-audio: Clamp frame size in implicit-feedback mode. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=28acb12014fb0c3e1edfdab1b1e3e266cf651550 <56ac3e7c90f6b45969c3fd07a98fad760ffd6901 || >=28acb12014fb0c3e1edfdab1b1e3e266cf651550 <be97fea7451d758881b95af78e900dd0d58a382a || >=28acb12014fb0c3e1edfdab1b1e3e266cf651550 <2db4535d6af79276a64449201c5be5feffb31c64 || >=28acb12014fb0c3e1edfdab1b1e3e266cf651550 <53f0aa37eb945f3c983f61d12fc35eb33debb8a9 || >=28acb12014fb0c3e1edfdab1b1e3e266cf651550 <8d7a30c50c2e58a6839634ed0acde14466d1dc61 | 56ac3e7c90f6b45969c3fd07a98fad760ffd6901, be97fea7451d758881b95af78e900dd0d58a382a, 2db4535d6af79276a64449201c5be5feffb31c64, 53f0aa37eb945f3c983f61d12fc35eb33debb8a9, 8d7a30c50c2e58a6839634ed0acde14466d1dc61 |
| Linux/Linuxgeneric | 3.8 | Not reported |
| Linux/Linuxgeneric | >=28acb12014fb0c3e1edfdab1b1e3e266cf651550 <2d39fea6d3c19a2f5811d123114d92e3d0115fd1 || >=28acb12014fb0c3e1edfdab1b1e3e266cf651550 <09cf3dbbb4256a43feb91d2f51f274510a9ada47 || >=28acb12014fb0c3e1edfdab1b1e3e266cf651550 <cfa8d3e0e8b812c4db4d5241f62b6bdbab2bd7be || >=28acb12014fb0c3e1edfdab1b1e3e266cf651550 <56ac3e7c90f6b45969c3fd07a98fad760ffd6901 || >=28acb12014fb0c3e1edfdab1b1e3e266cf651550 <be97fea7451d758881b95af78e900dd0d58a382a || >=28acb12014fb0c3e1edfdab1b1e3e266cf651550 <2db4535d6af79276a64449201c5be5feffb31c64 || >=28acb12014fb0c3e1edfdab1b1e3e266cf651550 <53f0aa37eb945f3c983f61d12fc35eb33debb8a9 || >=28acb12014fb0c3e1edfdab1b1e3e266cf651550 <8d7a30c50c2e58a6839634ed0acde14466d1dc61 | 2d39fea6d3c19a2f5811d123114d92e3d0115fd1, 09cf3dbbb4256a43feb91d2f51f274510a9ada47, cfa8d3e0e8b812c4db4d5241f62b6bdbab2bd7be, 56ac3e7c90f6b45969c3fd07a98fad760ffd6901, be97fea7451d758881b95af78e900dd0d58a382a, 2db4535d6af79276a64449201c5be5feffb31c64, 53f0aa37eb945f3c983f61d12fc35eb33debb8a9, 8d7a30c50c2e58a6839634ed0acde14466d1dc61 |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.