CVE-2026-63843

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-19. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

drm/amdgpu/jpeg: set no_user_fence for JPEG v4.0.5 ring

JPEG rings do not support 64-bit user fence writes, reject CS submissions with user fences.

(cherry picked from commit f05d0a4f21fc720116d6e238f23308b199891058)

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

July 19, 2026

Last Modified

August 5, 2026

Advisory Details (4)

Auto-updated Jul 21, 2026
No patch confirmed yet.
generic

drm/amdgpu/jpeg: set no_user_fence for JPEG v4.0.5 ring - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f9bc5633b761cff200c428f61ed0df6212b1c721
generic

drm/amdgpu/jpeg: set no_user_fence for JPEG v4.0.5 ring - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f26e3f7186cd6ecc93e6af102744d64c798dea7e
generic

drm/amdgpu/jpeg: set no_user_fence for JPEG v4.0.5 ring - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b65b7f3f3c18f797f81a2af7c97e2079900ad6db
generic

drm/amdgpu/jpeg: set no_user_fence for JPEG v4.0.5 ring - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/424510b60d4698a75a6ff71acdd88b528f0f39af

Vendor Advisories for CVE-2026-63843(1)

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

Patch Availability(18)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-30ubuntu
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-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-30ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-30ubuntu
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-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-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-30ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16~24.04.1) @ noble2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-30ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-30ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-30ubuntu

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

(2 across 2 ecosystems)
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 (137 versions)7.0.10-1—

All Vendor Advisories

(18)

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 29× in last 7d / 155× 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 201 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-63843?
CVE-2026-63843 is a high vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/jpeg: set nouserfence for JPEG v4.0.5 ring JPEG rings do not support 64-bit user fence writes, reject CS submissions with user fences. (cherry picked from commit f05d0a4f21fc720116d6e238f23308b199891058)
When was CVE-2026-63843 disclosed?
CVE-2026-63843 was first published in the National Vulnerability Database on July 19, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63843 actively exploited?
CVE-2026-63843 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 96.6% of all scored CVEs.
What is the CVSS score of CVE-2026-63843?
CVE-2026-63843 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-63843?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63843, 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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