CVE-2026-63846

HIGHPre-NVD 7.87.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

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: the CNA's CVSS, EPSS, GitHub Security Advisory
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

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 v3.0 ring

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

(cherry picked from commit 4d7d774f100efb5089c86a1fb8c5bf47c63fc9ef)

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
6th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-19). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 19, 2026

Last Modified

October 19, 2026

Advisory Details (5)

Auto-updated Jul 21, 2026
Patch available.
Web page

drm/amdgpu/jpeg: set no_user_fence for JPEG v3.0 ring - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ee035a9d3eed3a9f5a3e83c31a10b321c9598861
Web page

drm/amdgpu/jpeg: set no_user_fence for JPEG v3.0 ring - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a2baf12eec41f246689e6a3f8619af1200031576
Web page

drm/amdgpu/jpeg: set no_user_fence for JPEG v3.0 ring - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5ada37d7f736f9feeaa06a25e470a4c74e67a61a
Web page

drm/amdgpu/jpeg: set no_user_fence for JPEG v3.0 ring - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/48ce00787e3fddd2b45692fc991b8ab128343da5
Web page

drm/amdgpu/jpeg: set no_user_fence for JPEG v3.0 ring - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/303da8279f195cc741adc52c1b44d6b64de63bb0

Vendor Advisories for CVE-2026-63846(1)

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

Patch Availability(21)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-10-19ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-10-19ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-10-19ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-10-19ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-10-19ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-10-19ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-10-19ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-10-19ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-10-19ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-10-19ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-10-19ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-10-19ubuntu
ubuntulinux-tools-oracle-edge (7.0.0-1011.11~24.04.1) @ noble2026-10-19ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-10-19ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-10-19ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-10-19ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-10-19ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-10-19ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-10-19ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-10-19ubuntu
ubuntulinux-tools-azure-edge (7.0.0-1014.14~24.04.1) @ noble2026-10-19ubuntu

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
linux5.10.103-1 ... 7.2~rc5-1~exp1 (496 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (358 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)
  • every version up to 6.12.94-1: fixed in 6.12.94-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (141 versions)
  • every version up to 7.0.10-1: fixed in 7.0.10-1
—

Weakness Classification(1)

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

All Vendor Advisories

(21)

Data Freshness Timeline

(refreshed 19× in last 7d / 52× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 304 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 204 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-19 20:19 UTCEG score recompute
  2. 2026-10-19 20:19 UTCVendor advisory
  3. 2026-10-19 20:19 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  4. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  5. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  6. 2026-10-18 03:23 UTCEG score recompute
  7. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  8. 2026-10-16 17:20 UTCEG score recompute
  9. 2026-10-16 17:20 UTCVendor advisory
  10. 2026-10-16 17:19 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  11. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  12. 2026-10-16 15:56 UTCEG score recompute
  13. 2026-10-16 15:56 UTCVendor advisory
  14. 2026-10-16 15:56 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  15. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  16. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  17. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  18. 2026-10-13 11:52 UTCEG score recompute
  19. 2026-10-13 11:52 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  20. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  21. 2026-10-12 15:48 UTCEG score recompute
  22. 2026-10-11 19:33 UTCEG score recompute
  23. 2026-10-11 16:48 UTCEG score recompute
  24. 2026-10-11 14:09 UTCEG score recompute
  25. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
Show 75 more
  1. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  2. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  3. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  4. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  5. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  6. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  7. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  8. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  9. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  10. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  11. 2026-10-01 09:08 UTCEG score recompute
  12. 2026-10-01 09:08 UTCVendor advisory
  13. 2026-10-01 09:08 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  14. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  15. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  16. 2026-09-28 07:39 UTCEG score recompute
  17. 2026-09-28 07:39 UTCVendor advisory
  18. 2026-09-28 07:39 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  19. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  20. 2026-09-24 04:17 UTCEG score recompute
  21. 2026-09-24 04:17 UTCVendor advisory
  22. 2026-09-24 04:16 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  23. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  24. 2026-09-23 02:13 UTCEG score recompute
  25. 2026-09-23 02:13 UTCVendor advisory
  26. 2026-09-23 02:12 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  27. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  28. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  29. 2026-09-18 04:25 UTCEG score recompute
  30. 2026-09-18 04:25 UTCVendor advisory
  31. 2026-09-18 04:25 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  32. 2026-09-17 10:04 UTCEG score recompute
  33. 2026-09-17 10:04 UTCVendor advisory
  34. 2026-09-17 10:04 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  35. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  36. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  37. 2026-09-14 04:40 UTCEG score recompute
  38. 2026-09-14 04:40 UTCVendor advisory
  39. 2026-09-14 04:40 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  40. 2026-09-13 16:16 UTCVendor advisory
  41. 2026-09-13 16:16 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  42. 2026-09-13 03:39 UTCEG score recompute
  43. 2026-09-13 03:39 UTCVendor advisory
  44. 2026-09-13 03:39 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  45. 2026-09-12 10:23 UTCVendor advisory
  46. 2026-09-12 10:22 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  47. 2026-09-11 19:43 UTCEG score recompute
  48. 2026-09-11 19:43 UTCVendor advisory
  49. 2026-09-11 19:43 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  50. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  51. 2026-09-07 23:43 UTCEG score recompute
  52. 2026-09-07 23:43 UTCVendor advisory
  53. 2026-09-07 23:43 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  54. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  55. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  56. 2026-09-06 13:14 UTCVendor advisory
  57. 2026-09-06 13:14 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  58. 2026-09-05 20:13 UTCEG score recompute
  59. 2026-09-05 20:13 UTCVendor advisory
  60. 2026-09-05 20:13 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  61. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  62. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  63. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  64. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  65. 2026-08-31 04:21 UTCEG score recompute
  66. 2026-08-31 04:21 UTCVendor advisory
  67. 2026-08-31 04:21 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  68. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  69. 2026-08-30 15:42 UTCVendor advisory
  70. 2026-08-30 15:42 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  71. 2026-08-30 03:01 UTCEG score recompute
  72. 2026-08-30 03:01 UTCVendor advisory
  73. 2026-08-30 03:01 UTCGHSA enrichmentGHSA-85mj-cvf7-w5v9 · GitHub severity HIGH · GitHub CVSS 7.8
  74. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  75. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.1% · 3rd percentile

Frequently asked(5)

What is CVE-2026-63846?
CVE-2026-63846 is a high-severity vulnerability; its CVE record was published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/jpeg: set nouserfence for JPEG v3.0 ring JPEG rings do not support 64-bit user fence writes, reject CS submissions with user fences. (cherry picked from commit 4d7d774f100efb5089c86a1fb8c5bf47c63fc9ef)
When was the CVE record for CVE-2026-63846 published?
The CVE record for CVE-2026-63846 was published on July 19, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 19, 2026; the record at its source may have been updated since.
Is CVE-2026-63846 actively exploited?
CVE-2026-63846 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (6th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-63846?
CVE-2026-63846 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-63846?
A fix for CVE-2026-63846 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-63846 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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