CVE-2026-64490

HIGHPre-NVD 8.48.4—
EchelonGraph scoreMEDIUM confidence

Score 8.4 from GitHub Security Advisory (severity: HIGH) published 2026-07-25. a secondary CVSS source baseline 8.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 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

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

ALSA: virtio: Validate control metadata from the device

virtio-snd control handling trusts the device-provided control type and value count returned by the device.

That metadata is then used directly to index g_v2a_type_map[] in virtsnd_kctl_info(), and to size loops and memcpy() operations in virtsnd_kctl_get() and virtsnd_kctl_put() against fixed-size virtio_snd_ctl_value and snd_ctl_elem_value arrays.

A buggy or malicious device can therefore trigger out-of-bounds access by advertising an invalid control type or an oversized value count.

Validate control type and count once in virtsnd_kctl_parse_cfg(), before querying enumerated items or exposing the control to ALSA.

CVSS v3
8.4
EG Score
8.4(medium)
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
5%
KEV
Not listed

Published

July 25, 2026

Last Modified

August 17, 2026

Advisory Details (4)

Auto-updated Jul 27, 2026
No patch confirmed yet.
generic

ALSA: virtio: Validate control metadata from the device - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c77a6cbb36ff8cbc1f084d94f8dcda5250935271
generic

ALSA: virtio: Validate control metadata from the device - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5da9742de22db0dbaa8d414214ab5e1bedde00f9
generic

ALSA: virtio: Validate control metadata from the device - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3243563f99ef5d3949b934bd6390a5679405d0e1
generic

ALSA: virtio: Validate control metadata from the device - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/21584672fd699abe1768241d6c501b2de6139b6a

Vendor Advisories for CVE-2026-64490(3)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-31.31) @ resolute2026-09-11ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-11ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1013.13) @ resolute2026-09-11ubuntu
redhatkernel-0:5.14.0-687.44.1.el9_82026-09-04redhat
redhatkernel-0:6.12.0-211.50.1.el10_22026-09-01redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux-6.12—6.12.100-1~deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.95-1~bpo12+1 (30 versions)6.12.96-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (158 versions)7.1.4-1—

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 31× in last 7d / 105× 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.

Showing the most recent 100 of 182 total refreshes for this CVE.

  1. 2026-09-11 16:20 UTCEG score recompute
  2. 2026-09-11 16:20 UTCVendor advisory
  3. 2026-09-11 16:20 UTCGHSA enrichment
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 09:37 UTCEPSS rescore
  6. 2026-09-11 02:09 UTCVendor advisory
  7. 2026-09-11 02:08 UTCGHSA enrichment
  8. 2026-09-10 10:26 UTCEG score recompute
  9. 2026-09-10 10:26 UTCVendor advisory
  10. 2026-09-10 10:25 UTCGHSA enrichment
  11. 2026-09-09 08:30 UTCEG score recompute
  12. 2026-09-09 08:30 UTCVendor advisory
  13. 2026-09-09 08:30 UTCGHSA enrichment
  14. 2026-09-08 22:01 UTCEPSS rescore
  15. 2026-09-07 21:11 UTCEG score recompute
  16. 2026-09-07 21:11 UTCVendor advisory
  17. 2026-09-07 21:11 UTCGHSA enrichment
  18. 2026-09-07 16:01 UTCEPSS rescore
  19. 2026-09-07 00:01 UTCEG score recompute
  20. 2026-09-07 00:01 UTCVendor advisory
  21. 2026-09-07 00:01 UTCGHSA enrichment
  22. 2026-09-06 13:47 UTCEPSS rescore
  23. 2026-09-06 08:07 UTCVendor advisory
  24. 2026-09-06 08:07 UTCGHSA enrichment
  25. 2026-09-05 19:18 UTCEG score recompute
Show 75 more
  1. 2026-09-05 19:18 UTCVendor advisory
  2. 2026-09-05 19:18 UTCGHSA enrichment
  3. 2026-09-05 15:31 UTCEPSS rescore
  4. 2026-09-05 05:54 UTCEG score recompute
  5. 2026-09-05 05:54 UTCVendor advisory
  6. 2026-09-05 05:54 UTCGHSA enrichment
  7. 2026-09-04 12:38 UTCEG score recompute
  8. 2026-09-04 12:38 UTCVendor advisory
  9. 2026-09-04 12:38 UTCGHSA enrichment
  10. 2026-09-04 05:07 UTCEPSS rescore
  11. 2026-09-02 14:12 UTCEPSS rescore
  12. 2026-09-01 23:07 UTCEG score recompute
  13. 2026-09-01 23:07 UTCGHSA enrichment
  14. 2026-09-01 13:54 UTCEPSS rescore
  15. 2026-08-31 01:43 UTCEG score recompute
  16. 2026-08-31 01:43 UTCGHSA enrichment
  17. 2026-08-30 19:17 UTCEPSS rescore
  18. 2026-08-30 12:54 UTCEG score recompute
  19. 2026-08-30 12:54 UTCGHSA enrichment
  20. 2026-08-30 01:22 UTCEPSS rescore
  21. 2026-08-30 00:01 UTCEG score recompute
  22. 2026-08-30 00:01 UTCGHSA enrichment
  23. 2026-08-28 21:42 UTCEPSS rescore
  24. 2026-08-28 01:28 UTCEG score recompute
  25. 2026-08-28 01:28 UTCGHSA enrichment
  26. 2026-08-27 12:18 UTCGHSA enrichment
  27. 2026-08-26 23:29 UTCEG score recompute
  28. 2026-08-26 23:29 UTCGHSA enrichment
  29. 2026-08-26 14:47 UTCEPSS rescore
  30. 2026-08-26 10:38 UTCGHSA enrichment
  31. 2026-08-25 20:46 UTCEG score recompute
  32. 2026-08-25 20:46 UTCGHSA enrichment
  33. 2026-08-25 13:49 UTCEPSS rescore
  34. 2026-08-25 07:56 UTCGHSA enrichment
  35. 2026-08-24 19:08 UTCEG score recompute
  36. 2026-08-24 19:08 UTCGHSA enrichment
  37. 2026-08-24 06:17 UTCGHSA enrichment
  38. 2026-08-23 17:29 UTCGHSA enrichment
  39. 2026-08-23 04:41 UTCEG score recompute
  40. 2026-08-23 04:40 UTCGHSA enrichment
  41. 2026-08-23 00:19 UTCEPSS rescore
  42. 2026-08-22 15:52 UTCGHSA enrichment
  43. 2026-08-22 02:57 UTCEG score recompute
  44. 2026-08-22 02:56 UTCGHSA enrichment
  45. 2026-08-21 23:49 UTCEPSS rescore
  46. 2026-08-21 14:06 UTCGHSA enrichment
  47. 2026-08-21 01:17 UTCEG score recompute
  48. 2026-08-21 01:17 UTCGHSA enrichment
  49. 2026-08-20 22:55 UTCEPSS rescore
  50. 2026-08-20 12:29 UTCGHSA enrichment
  51. 2026-08-19 23:41 UTCEG score recompute
  52. 2026-08-19 23:41 UTCGHSA enrichment
  53. 2026-08-19 17:04 UTCEPSS rescore
  54. 2026-08-19 10:52 UTCGHSA enrichment
  55. 2026-08-18 22:03 UTCEG score recompute
  56. 2026-08-18 22:03 UTCGHSA enrichment
  57. 2026-08-18 13:48 UTCEPSS rescore
  58. 2026-08-18 09:11 UTCGHSA enrichment
  59. 2026-08-17 20:17 UTCEG score recompute
  60. 2026-08-17 20:17 UTCGHSA enrichment
  61. 2026-08-17 13:47 UTCEPSS rescore
  62. 2026-08-17 05:43 UTCEG score recompute
  63. 2026-08-17 05:43 UTCGHSA enrichment
  64. 2026-08-17 05:15 UTCGHSA enrichment
  65. 2026-08-16 18:11 UTCEG score recompute
  66. 2026-08-16 18:11 UTCGHSA enrichment
  67. 2026-08-16 14:56 UTCEPSS rescore
  68. 2026-08-16 05:22 UTCEG score recompute
  69. 2026-08-16 05:22 UTCGHSA enrichment
  70. 2026-08-15 16:34 UTCGHSA enrichment
  71. 2026-08-15 03:45 UTCEG score recompute
  72. 2026-08-15 03:45 UTCGHSA enrichment
  73. 2026-08-15 01:30 UTCEPSS rescore
  74. 2026-08-14 14:56 UTCGHSA enrichment
  75. 2026-08-14 02:08 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-64490?
CVE-2026-64490 is a high vulnerability published on July 25, 2026. In the Linux kernel, the following vulnerability has been resolved: ALSA: virtio: Validate control metadata from the device virtio-snd control handling trusts the device-provided control type and value count returned by the device. That metadata is then used directly to index gv2atype_map[] in…
When was CVE-2026-64490 disclosed?
CVE-2026-64490 was first published in the National Vulnerability Database on July 25, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64490 actively exploited?
CVE-2026-64490 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 95.3% of all scored CVEs.
What is the CVSS score of CVE-2026-64490?
CVE-2026-64490 has a CVSS v3 base score of 8.4 (NVD).
How do I remediate CVE-2026-64490?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64490, 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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