CVE-2026-89814

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-16. A secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

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

drm/amdgpu: clamp the isolation index for rings outside a partition

adev->isolation[] has one slot per partition, but a ring that is not assigned to one keeps AMDGPU_XCP_NO_PARTITION, which is ~0, so indexing the array with it is out of bounds. SDMA submissions hit this on both the isolation enforcement and the VM flush path and trip UBSAN.

Fall back to the first slot the way the cleaner shader path already does, and stop taking the address before the ring type check that makes it relevant.

CVSS v3
7.8
EG Score
7.8HIGHhigh confidence
EG Risk
40
EG Risk 40/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
6th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 16, 2026

Last Modified

September 17, 2026

Advisory Details (3)

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

drm/amdgpu: clamp the isolation index for rings outside a partition - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b30900566642ceb2c9e12b56c2afec28d0fd91a0
generic

drm/amdgpu: clamp the isolation index for rings outside a partition - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/964de255497ffd7cb8a86e405b8ac6d927e7e177
generic

drm/amdgpu: clamp the isolation index for rings outside a partition - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0bfb938182d1313e5cac32ae38dbaaa4eabe4af4

Vendor Advisories for CVE-2026-89814(1)

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

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (178 versions)
  • every version up to 7.2.6-1: fixed in 7.2.6-1
—

Data Freshness Timeline

(refreshed 26× in last 7d / 78× 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.

  1. 2026-10-05 03:28 UTCEG score recompute
  2. 2026-10-05 03:28 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 15:21 UTCGHSA enrichment
  5. 2026-10-04 02:58 UTCGHSA enrichment
  6. 2026-10-03 14:51 UTCEG score recompute
  7. 2026-10-03 14:51 UTCGHSA enrichment
  8. 2026-10-03 02:45 UTCEG score recompute
  9. 2026-10-03 02:45 UTCGHSA enrichment
  10. 2026-10-02 14:38 UTCGHSA enrichment
  11. 2026-10-02 02:26 UTCEG score recompute
  12. 2026-10-02 02:26 UTCGHSA enrichment
  13. 2026-10-01 19:51 UTCEPSS rescore
  14. 2026-10-01 14:03 UTCGHSA enrichment
  15. 2026-10-01 01:57 UTCEG score recompute
  16. 2026-10-01 01:56 UTCGHSA enrichment
  17. 2026-09-30 15:04 UTCEPSS rescore
  18. 2026-09-30 13:48 UTCGHSA enrichment
  19. 2026-09-30 01:37 UTCEG score recompute
  20. 2026-09-30 01:37 UTCGHSA enrichment
  21. 2026-09-29 13:31 UTCGHSA enrichment
  22. 2026-09-29 01:25 UTCEG score recompute
  23. 2026-09-29 01:25 UTCGHSA enrichment
  24. 2026-09-28 13:52 UTCEPSS rescore
  25. 2026-09-28 13:52 UTCEPSS rescore
Show 53 more
  1. 2026-09-28 13:19 UTCGHSA enrichment
  2. 2026-09-28 01:13 UTCEG score recompute
  3. 2026-09-28 01:13 UTCGHSA enrichment
  4. 2026-09-27 13:49 UTCEPSS rescore
  5. 2026-09-27 13:07 UTCGHSA enrichment
  6. 2026-09-27 01:00 UTCEG score recompute
  7. 2026-09-27 01:00 UTCGHSA enrichment
  8. 2026-09-26 15:59 UTCEPSS rescore
  9. 2026-09-26 12:54 UTCGHSA enrichment
  10. 2026-09-26 00:48 UTCEG score recompute
  11. 2026-09-26 00:48 UTCGHSA enrichment
  12. 2026-09-25 12:08 UTCGHSA enrichment
  13. 2026-09-25 00:02 UTCEG score recompute
  14. 2026-09-25 00:02 UTCGHSA enrichment
  15. 2026-09-24 14:04 UTCEPSS rescore
  16. 2026-09-24 11:56 UTCGHSA enrichment
  17. 2026-09-23 23:49 UTCEG score recompute
  18. 2026-09-23 23:49 UTCGHSA enrichment
  19. 2026-09-23 17:54 UTCEPSS rescore
  20. 2026-09-23 11:43 UTCGHSA enrichment
  21. 2026-09-22 23:37 UTCEG score recompute
  22. 2026-09-22 23:37 UTCGHSA enrichment
  23. 2026-09-22 16:01 UTCEPSS rescore
  24. 2026-09-22 11:31 UTCGHSA enrichment
  25. 2026-09-21 23:24 UTCEG score recompute
  26. 2026-09-21 23:24 UTCGHSA enrichment
  27. 2026-09-21 21:09 UTCEPSS rescore
  28. 2026-09-21 11:18 UTCGHSA enrichment
  29. 2026-09-20 23:11 UTCEG score recompute
  30. 2026-09-20 23:11 UTCGHSA enrichment
  31. 2026-09-20 20:16 UTCEPSS rescore
  32. 2026-09-20 11:00 UTCGHSA enrichment
  33. 2026-09-19 22:54 UTCEG score recompute
  34. 2026-09-19 22:54 UTCGHSA enrichment
  35. 2026-09-19 10:47 UTCGHSA enrichment
  36. 2026-09-18 22:41 UTCEG score recompute
  37. 2026-09-18 22:41 UTCGHSA enrichment
  38. 2026-09-18 19:28 UTCEPSS rescore
  39. 2026-09-18 10:35 UTCGHSA enrichment
  40. 2026-09-17 22:26 UTCEG score recompute
  41. 2026-09-17 22:25 UTCGHSA enrichment
  42. 2026-09-17 19:32 UTCEPSS rescore
  43. 2026-09-17 10:18 UTCGHSA enrichment
  44. 2026-09-17 03:30 UTCEG score recompute
  45. 2026-09-17 03:30 UTCGHSA enrichment
  46. 2026-09-16 15:24 UTCEG score recompute
  47. 2026-09-16 15:24 UTCGHSA enrichment
  48. 2026-09-16 14:49 UTCEG score recompute▲ 7.80
  49. 2026-09-16 14:49 UTCGHSA enrichment
  50. 2026-09-16 14:45 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  51. 2026-09-16 11:21 UTCNVD update
  52. 2026-09-16 10:41 UTCEG score recompute
  53. 2026-09-16 10:36 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-89814?
CVE-2026-89814 is a high vulnerability published on September 16, 2026. In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: clamp the isolation index for rings outside a partition adev->isolation[] has one slot per partition, but a ring that is not assigned to one keeps AMDGPUXCPNO_PARTITION, which is ~0, so indexing the array with it is out…
When was CVE-2026-89814 disclosed?
CVE-2026-89814 was first published on September 16, 2026, with the most recent update on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-89814 actively exploited?
CVE-2026-89814 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-2026-89814?
CVE-2026-89814 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-2026-89814?
No fix for CVE-2026-89814 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-89814 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-89814

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