CVE-2026-89912

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-16. A secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.1EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.1Exploit: 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:

KVM: arm64: vgic-its: Don't dereference a NULL collection on ITT save

MAPC with V=0 drops ite->collection but leaves the ITE on the device's ITT list, and vgic_its_save_ite() dereferences it unconditionally. A guest that issues MAPD, MAPTI and then MAPC(V=0) therefore oopses the host when the VMM issues KVM_DEV_ARM_ITS_SAVE_TABLES to migrate it. That sequence is UNPREDICTABLE per the architecture, but KVM already handles the resulting state in the translate, MOVI and DISCARD paths.

Save a zeroed entry, which vgic_its_restore_ite() reads back as invalid. Skipping the ITE instead would leave the ITT slot holding whatever is in guest memory, and restore rejects an entry naming a collection the restored collection table does not have.

CVSS v3
7.1
EG Score
7.1HIGHhigh confidence
EG Risk
37
EG Risk 37/100CISA 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
Severity71% × 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
7th
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 16, 2026

Advisory Details (3)

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

KVM: arm64: vgic-its: Don't dereference a NULL collection on ITT save - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c6c156d931c33b92362383cf76f6d6e1291dcbfe
generic

KVM: arm64: vgic-its: Don't dereference a NULL collection on ITT save - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3d4c26b16a04a084fe0bde08ccdd8086570f8bbe
generic

KVM: arm64: vgic-its: Don't dereference a NULL collection on ITT save - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/36df368861d2664291298feeb37dfef43fcae670

Vendor Advisories for CVE-2026-89912(1)

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

Affected Packages

(3 across 3 ecosystems)
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
linux6.12.100-1 ... 7.2~rc7-1~exp1 (181 versions)
  • every version on: no fix on record
—
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 25× 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. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 23:08 UTCGHSA enrichment
  3. 2026-10-04 11:24 UTCGHSA enrichment
  4. 2026-10-03 23:41 UTCEG score recompute
  5. 2026-10-03 23:41 UTCGHSA enrichment
  6. 2026-10-03 11:54 UTCGHSA enrichment
  7. 2026-10-03 00:09 UTCEG score recompute
  8. 2026-10-03 00:09 UTCGHSA enrichment
  9. 2026-10-02 12:26 UTCGHSA enrichment
  10. 2026-10-02 00:11 UTCEG score recompute
  11. 2026-10-02 00:11 UTCGHSA enrichment
  12. 2026-10-01 19:51 UTCEPSS rescore
  13. 2026-10-01 12:27 UTCGHSA enrichment
  14. 2026-10-01 00:39 UTCEG score recompute
  15. 2026-10-01 00:39 UTCGHSA enrichment
  16. 2026-09-30 15:04 UTCEPSS rescore
  17. 2026-09-30 12:44 UTCGHSA enrichment
  18. 2026-09-30 00:55 UTCEG score recompute
  19. 2026-09-30 00:55 UTCGHSA enrichment
  20. 2026-09-29 08:39 UTCEG score recompute
  21. 2026-09-29 08:39 UTCGHSA enrichment
  22. 2026-09-28 20:56 UTCEG score recompute
  23. 2026-09-28 20:56 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 09:12 UTCGHSA enrichment
  2. 2026-09-27 21:30 UTCEG score recompute
  3. 2026-09-27 21:30 UTCGHSA enrichment
  4. 2026-09-27 13:49 UTCEPSS rescore
  5. 2026-09-27 09:46 UTCGHSA enrichment
  6. 2026-09-26 22:03 UTCEG score recompute
  7. 2026-09-26 22:03 UTCGHSA enrichment
  8. 2026-09-26 15:59 UTCEPSS rescore
  9. 2026-09-26 10:20 UTCEG score recompute
  10. 2026-09-26 10:20 UTCGHSA enrichment
  11. 2026-09-25 22:34 UTCGHSA enrichment
  12. 2026-09-25 10:50 UTCGHSA enrichment
  13. 2026-09-24 23:01 UTCEG score recompute
  14. 2026-09-24 23:01 UTCGHSA enrichment
  15. 2026-09-24 14:04 UTCEPSS rescore
  16. 2026-09-24 10:59 UTCGHSA enrichment
  17. 2026-09-23 23:16 UTCEG score recompute
  18. 2026-09-23 23:16 UTCGHSA enrichment
  19. 2026-09-23 17:54 UTCEPSS rescore
  20. 2026-09-23 11:29 UTCGHSA enrichment
  21. 2026-09-22 23:46 UTCEG score recompute
  22. 2026-09-22 23:46 UTCGHSA enrichment
  23. 2026-09-22 16:01 UTCEPSS rescore
  24. 2026-09-22 12:02 UTCGHSA enrichment
  25. 2026-09-22 00:20 UTCEG score recompute
  26. 2026-09-22 00:20 UTCGHSA enrichment
  27. 2026-09-21 21:09 UTCEPSS rescore
  28. 2026-09-21 12:36 UTCGHSA enrichment
  29. 2026-09-21 00:53 UTCEG score recompute
  30. 2026-09-21 00:53 UTCGHSA enrichment
  31. 2026-09-20 20:16 UTCEPSS rescore
  32. 2026-09-20 13:09 UTCGHSA enrichment
  33. 2026-09-20 01:24 UTCEG score recompute
  34. 2026-09-20 01:24 UTCGHSA enrichment
  35. 2026-09-19 13:41 UTCGHSA enrichment
  36. 2026-09-19 01:58 UTCEG score recompute
  37. 2026-09-19 01:58 UTCGHSA enrichment
  38. 2026-09-18 19:28 UTCEPSS rescore
  39. 2026-09-18 14:15 UTCGHSA enrichment
  40. 2026-09-18 02:29 UTCEG score recompute
  41. 2026-09-18 02:29 UTCGHSA enrichment
  42. 2026-09-17 19:32 UTCEPSS rescore
  43. 2026-09-17 14:45 UTCGHSA enrichment
  44. 2026-09-17 03:02 UTCEG score recompute
  45. 2026-09-17 03:02 UTCGHSA enrichment
  46. 2026-09-16 15:19 UTCEG score recompute
  47. 2026-09-16 15:19 UTCGHSA enrichment
  48. 2026-09-16 14:48 UTCEG score recompute▲ 7.10
  49. 2026-09-16 14:48 UTCGHSA enrichment
  50. 2026-09-16 14:45 UTCMITRE cvelistV5CVSS v3 → 7.1 · severity → HIGH
  51. 2026-09-16 11:21 UTCNVD update
  52. 2026-09-16 10:39 UTCEG score recompute
  53. 2026-09-16 10:36 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-89912?
CVE-2026-89912 is a high vulnerability published on September 16, 2026. In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its: Don't dereference a NULL collection on ITT save MAPC with V=0 drops ite->collection but leaves the ITE on the device's ITT list, and vgicitssave_ite() dereferences it unconditionally. A guest that issues MAPD,…
When was CVE-2026-89912 disclosed?
CVE-2026-89912 was first published on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-89912 actively exploited?
CVE-2026-89912 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (7th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-89912?
CVE-2026-89912 has a CVSS base score of 7.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-89912?
No fix for CVE-2026-89912 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-2026-89912 are linked in the Vendor Advisories panel on this page.

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