CVE-2026-74497

HIGHPre-NVD 8.48.4—
EchelonGraph scoreHIGH confidence

Score 8.4 from GitHub Security Advisory (severity: HIGH) published 2026-08-15. a secondary CVSS source baseline 8.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
8.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.4
EG Score
8.4(high)
EG Risk
42(Track)
EG Risk 42/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity84% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

August 15, 2026

Last Modified

August 19, 2026

Advisory Details (5)

Auto-updated Aug 17, 2026
No patch confirmed yet.
generic

ALSA: usb-audio: Clamp frame size in implicit-feedback mode - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/be97fea7451d758881b95af78e900dd0d58a382a
generic

ALSA: usb-audio: Clamp frame size in implicit-feedback mode - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8d7a30c50c2e58a6839634ed0acde14466d1dc61
generic

ALSA: usb-audio: Clamp frame size in implicit-feedback mode - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/56ac3e7c90f6b45969c3fd07a98fad760ffd6901
generic

ALSA: usb-audio: Clamp frame size in implicit-feedback mode - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/53f0aa37eb945f3c983f61d12fc35eb33debb8a9
generic

ALSA: usb-audio: Clamp frame size in implicit-feedback mode - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2db4535d6af79276a64449201c5be5feffb31c64

Vendor Advisories for CVE-2026-74497(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 32× in last 7d / 32× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-21 06:07 UTCEG score recompute
  2. 2026-08-21 06:07 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 17:57 UTCGHSA enrichment
  5. 2026-08-20 05:48 UTCGHSA enrichment
  6. 2026-08-19 17:38 UTCEG score recompute
  7. 2026-08-19 17:38 UTCGHSA enrichment
  8. 2026-08-19 17:04 UTCEPSS rescore
  9. 2026-08-19 16:53 UTCEG score recompute
  10. 2026-08-19 16:53 UTCGHSA enrichment
  11. 2026-08-19 07:23 UTCGHSA enrichment
  12. 2026-08-18 19:14 UTCEG score recompute
  13. 2026-08-18 19:14 UTCGHSA enrichment
  14. 2026-08-18 13:49 UTCEPSS rescore
  15. 2026-08-18 13:49 UTCEPSS rescore
  16. 2026-08-18 07:04 UTCGHSA enrichment
  17. 2026-08-17 18:54 UTCEG score recompute
  18. 2026-08-17 18:54 UTCGHSA enrichment
  19. 2026-08-17 13:47 UTCEPSS rescore
  20. 2026-08-17 06:24 UTCEG score recompute
  21. 2026-08-17 06:24 UTCGHSA enrichment
  22. 2026-08-17 05:55 UTCEG score recompute▲ 8.40
  23. 2026-08-17 05:55 UTCGHSA enrichment
  24. 2026-08-17 05:54 UTCMITRE cvelistV5CVSS v3 → 8.4 · severity → HIGH
  25. 2026-08-17 05:40 UTCEG score recompute
Show 7 more
  1. 2026-08-17 05:40 UTCGHSA enrichment
  2. 2026-08-17 05:39 UTCMITRE cvelistV5
  3. 2026-08-16 14:56 UTCEPSS rescore
  4. 2026-08-16 14:56 UTCEPSS rescore
  5. 2026-08-15 13:27 UTCNVD update
  6. 2026-08-15 12:40 UTCEG score recompute
  7. 2026-08-15 12:37 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74497?
CVE-2026-74497 is a high vulnerability published on August 15, 2026. In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Clamp frame size in implicit-feedback mode sndusbhandlesyncurb() scales received sync packet sizes by the sender's stride and stores the result directly in outpacket->packetsize[i]. If a connected USB device sends…
When was CVE-2026-74497 disclosed?
CVE-2026-74497 was first published in the National Vulnerability Database on August 15, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74497 actively exploited?
CVE-2026-74497 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 96.0% of all scored CVEs.
What is the CVSS score of CVE-2026-74497?
CVE-2026-74497 has a CVSS v3 base score of 8.4 (NVD).
How do I remediate CVE-2026-74497?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74497, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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