CVE-2026-74497ALSA: usb-audio: Clamp frame size in implicit-feedback mode
- 8.4HighCVSS base score
- 0.14%Exploitation in 30 daysEPSS · top 96% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
Published
- 2 months later
· 2 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.4 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High8.4 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.14% · top 96% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.4.
Affected products
- affected 28acb12014fb0c3e1edfdab1b1e3e266cf651550 – < 2d39fea6d3c19a2f5811d123114d92e3d0115fd1
- affected 28acb12014fb0c3e1edfdab1b1e3e266cf651550 – < 09cf3dbbb4256a43feb91d2f51f274510a9ada47
- affected 28acb12014fb0c3e1edfdab1b1e3e266cf651550 – < cfa8d3e0e8b812c4db4d5241f62b6bdbab2bd7be
- affected 28acb12014fb0c3e1edfdab1b1e3e266cf651550 – < 56ac3e7c90f6b45969c3fd07a98fad760ffd6901
- affected 28acb12014fb0c3e1edfdab1b1e3e266cf651550 – < be97fea7451d758881b95af78e900dd0d58a382a
- affected 28acb12014fb0c3e1edfdab1b1e3e266cf651550 – < 2db4535d6af79276a64449201c5be5feffb31c64
- affected 28acb12014fb0c3e1edfdab1b1e3e266cf651550 – < 53f0aa37eb945f3c983f61d12fc35eb33debb8a9
- affected 28acb12014fb0c3e1edfdab1b1e3e266cf651550 – < 8d7a30c50c2e58a6839634ed0acde14466d1dc61
- affected 3.8
- unaffected < 3.8
- unaffected 5.10.265 – ≤ 5.10.*
- unaffected 5.15.216 – ≤ 5.15.*
- unaffected 6.1.183 – ≤ 6.1.*
- unaffected 6.6.151 – ≤ 6.6.*
- unaffected 6.12.103 – ≤ 6.12.*
- unaffected 6.18.44 – ≤ 6.18.*
- unaffected 7.1.8 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/2d39fea6d3c19a2f5811d123114d92e3d0115fd1 (opens in a new tab)
- https://git.kernel.org/stable/c/09cf3dbbb4256a43feb91d2f51f274510a9ada47 (opens in a new tab)
- https://git.kernel.org/stable/c/cfa8d3e0e8b812c4db4d5241f62b6bdbab2bd7be (opens in a new tab)
- https://git.kernel.org/stable/c/56ac3e7c90f6b45969c3fd07a98fad760ffd6901 (opens in a new tab)
- https://git.kernel.org/stable/c/be97fea7451d758881b95af78e900dd0d58a382a (opens in a new tab)
- https://git.kernel.org/stable/c/2db4535d6af79276a64449201c5be5feffb31c64 (opens in a new tab)
- https://git.kernel.org/stable/c/53f0aa37eb945f3c983f61d12fc35eb33debb8a9 (opens in a new tab)
- https://git.kernel.org/stable/c/8d7a30c50c2e58a6839634ed0acde14466d1dc61 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-59690 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-74497)Record last updated .