CVE-2026-43436

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-08. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces

The Scarlett2 mixer quirk in USB-audio driver may hit a NULL dereference when a malformed USB descriptor is passed, since it assumes the presence of an endpoint in the parsed interface in scarlett2_find_fc_interface(), as reported by fuzzer.

For avoiding the NULL dereference, just add the sanity check of bNumEndpoints and skip the invalid interface.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

May 8, 2026

Last Modified

May 21, 2026

Advisory Details (6)

Auto-updated Jun 16, 2026
No patch confirmed yet.
generic

ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/df1d8abf36ca3681c21a6809eaa9a1e01ef897a6
generic

ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c5c5a6c53cf3b658f1d4512dfa61f3cd25bc34ba
generic

ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b267255c15d2a5b90c4e926146aa155e5161e264
generic

ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b014cc945baba75816cda0cf8934be87c9ed4947
generic

ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3d542cf3c4c854cdf5d58049771f68926b9eb2b9
generic

ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3d4f23885e4b90347c9a1d779af6e79a99b5172a

Vendor Advisories for CVE-2026-43436(1)

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

Patch Availability(15)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-realtime-hwe-22.04 (6.8.1-1056.57~22.04.2) @ jammy2026-08-23ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-23ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-23ubuntu
ubuntulinux-tools-lowlatency-hwe-22.04-edge (6.8.0-136.136.2~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-23ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-23ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-23ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-23ubuntu
linuxKernel @ 6.1.167—osv

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
linux6.1.106-1 ... 6.1.99-1 (48 versions)6.1.170-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)6.12.85-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (119 versions)6.19.10-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(14)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 5× in last 7d / 60× 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 184 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-43436?
CVE-2026-43436 is a medium vulnerability published on May 8, 2026. In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces The Scarlett2 mixer quirk in USB-audio driver may hit a NULL dereference when a malformed USB descriptor is passed, since it assumes the presence of an…
When was CVE-2026-43436 disclosed?
CVE-2026-43436 was first published in the National Vulnerability Database on May 8, 2026, with the most recent update on May 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43436 actively exploited?
CVE-2026-43436 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 97.7% of all scored CVEs.
What is the CVSS score of CVE-2026-43436?
CVE-2026-43436 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-43436?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43436, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-43436

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