CVE-2026-52963

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-06-24. 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: Bound MIDI endpoint descriptor scans

snd_usbmidi_get_ms_info() validates the internal MIDIStreaming endpoint descriptor size before using baAssocJackID[], but the descriptor walker can still return a class-specific endpoint descriptor whose bLength exceeds the remaining bytes in the endpoint-extra scan.

That leaves later flexible-array reads bounded by bLength, but not by the remaining bytes in the endpoint-extra scan.

Stop walking when bLength is zero or extends past the remaining endpoint-extra scan.

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
3%
KEV
Not listed

Published

June 24, 2026

Last Modified

July 14, 2026

Advisory Details (8)

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

ALSA: usb-audio: Bound MIDI endpoint descriptor scans - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e2f1260a056eb3215c13c48c5378f3e4112dc3af
generic

ALSA: usb-audio: Bound MIDI endpoint descriptor scans - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d6854daa67be623860f4e1873fd3d3c275aba4ed
generic

ALSA: usb-audio: Bound MIDI endpoint descriptor scans - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c65b137d351e21cbc5630e73ef0eb1e1d75f5b20
generic

ALSA: usb-audio: Bound MIDI endpoint descriptor scans - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c59159ce10e75b568cd0d4b29efcb0fb0ddecc94
generic

ALSA: usb-audio: Bound MIDI endpoint descriptor scans - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a0226560540c16717efcceaf15c862cf115b01d3
generic

ALSA: usb-audio: Bound MIDI endpoint descriptor scans - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/728ab0c72e49ca27185067984cd565425eb69b2e
generic

ALSA: usb-audio: Bound MIDI endpoint descriptor scans - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3d3b2b01a3e73828e201ece96f863e7a3e0cdc6e
generic

ALSA: usb-audio: Bound MIDI endpoint descriptor scans - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/09141583bd97f4bbd7358e29fd138fe798467cdb

Vendor Advisories for CVE-2026-52963(2)

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

Patch Availability(30)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-08-30ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-30ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-30ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-30ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-08-30ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-08-30ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-30ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-08-30ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-30ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-30ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-08-30ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-08-30ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-30ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-30ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-08-30ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-30ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-30ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-30ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-30ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-30ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-30ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-08-30ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-30ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-08-30ubuntu

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

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)5.10.259-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)6.1.176-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (140 versions)7.0.10-1—

Additional Vendor Advisories

(24)

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

Frequently asked(5)

What is CVE-2026-52963?
CVE-2026-52963 is a medium vulnerability published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Bound MIDI endpoint descriptor scans sndusbmidigetmsinfo() validates the internal MIDIStreaming endpoint descriptor size before using baAssocJackID[], but the descriptor walker can still return a class-specific…
When was CVE-2026-52963 disclosed?
CVE-2026-52963 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52963 actively exploited?
CVE-2026-52963 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 97.2% of all scored CVEs.
What is the CVSS score of CVE-2026-52963?
CVE-2026-52963 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-52963?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52963, 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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