CVE-2026-89904

HIGHPre-NVD 8.48.4—
EchelonGraph scoreHIGH confidence

Score 8.4 from GitHub Security Advisory (severity: HIGH) published 2026-09-16. A secondary CVSS source baseline 8.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.4EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 8.4Exploit: 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:

LoongArch: Fix acpi_package_ids[] array overflow

With LoongArch virt machine, a typical setting is one core per socket, there will max 256 sockets (packages) on one VM. With PPTT acpi table, array acpi_package_ids[] will be overflowed.

Here change the array size of acpi_package_ids[] with the max value of MAX_PACKAGES and KVM_MAX_VCPUS.

CVSS v3
8.4
EG Score
8.4HIGHhigh confidence
EG Risk
42
EG Risk 42/100CISA 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
Severity84% × 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
8th
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 (4)

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

LoongArch: Fix acpi_package_ids[] array overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2a2367d46d7a4ee4122b7a86e57125542dbbe963
generic

LoongArch: Fix acpi_package_ids[] array overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6311b8c471afa33c18adbe4eb16f862936b71ca3
generic

LoongArch: Fix acpi_package_ids[] array overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d3fd094c13c6d0b74f246461ca4cf427d539c8e8
generic

LoongArch: Fix acpi_package_ids[] array overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0195e04b1eec8fb00e2db9c5e55655a3f5e76f60

Vendor Advisories for CVE-2026-89904(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
linux-6.126.12.100-1~deb12u1, 6.12.101-1~deb12u1, 6.12.107-1~deb12u1
  • every version up to 6.12.111-1~deb12u1: fixed in 6.12.111-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.12.96-1 (35 versions)
  • every version up to 6.12.111-1: fixed in 6.12.111-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (179 versions)
  • every version up to 7.2.6-1: fixed in 7.2.6-1
—

Data Freshness Timeline

(refreshed 25× in last 7d / 76× 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 05:37 UTCEG score recompute
  2. 2026-10-05 05:37 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 17:15 UTCGHSA enrichment
  5. 2026-10-04 04:45 UTCGHSA enrichment
  6. 2026-10-03 16:24 UTCEG score recompute
  7. 2026-10-03 16:24 UTCGHSA enrichment
  8. 2026-10-03 04:01 UTCEG score recompute
  9. 2026-10-03 04:01 UTCGHSA enrichment
  10. 2026-10-02 15:33 UTCGHSA enrichment
  11. 2026-10-02 03:12 UTCEG score recompute
  12. 2026-10-02 03:12 UTCGHSA enrichment
  13. 2026-10-01 19:51 UTCEPSS rescore
  14. 2026-10-01 14:50 UTCGHSA enrichment
  15. 2026-10-01 02:29 UTCEG score recompute
  16. 2026-10-01 02:29 UTCGHSA enrichment
  17. 2026-09-30 15:04 UTCEPSS rescore
  18. 2026-09-30 14:09 UTCGHSA enrichment
  19. 2026-09-30 01:47 UTCGHSA enrichment
  20. 2026-09-29 13:26 UTCGHSA enrichment
  21. 2026-09-29 00:57 UTCEG score recompute
  22. 2026-09-29 00:57 UTCGHSA enrichment
  23. 2026-09-28 13:52 UTCEPSS rescore
  24. 2026-09-28 13:52 UTCEPSS rescore
  25. 2026-09-28 12:35 UTCGHSA enrichment
Show 51 more
  1. 2026-09-28 00:14 UTCEG score recompute
  2. 2026-09-28 00:14 UTCGHSA enrichment
  3. 2026-09-27 13:49 UTCEPSS rescore
  4. 2026-09-27 11:52 UTCGHSA enrichment
  5. 2026-09-26 23:31 UTCEG score recompute
  6. 2026-09-26 23:30 UTCGHSA enrichment
  7. 2026-09-26 15:59 UTCEPSS rescore
  8. 2026-09-26 11:03 UTCEG score recompute
  9. 2026-09-26 11:03 UTCGHSA enrichment
  10. 2026-09-25 22:34 UTCGHSA enrichment
  11. 2026-09-25 09:53 UTCGHSA enrichment
  12. 2026-09-24 21:32 UTCEG score recompute
  13. 2026-09-24 21:32 UTCGHSA enrichment
  14. 2026-09-24 14:04 UTCEPSS rescore
  15. 2026-09-24 08:38 UTCGHSA enrichment
  16. 2026-09-23 20:17 UTCEG score recompute
  17. 2026-09-23 20:17 UTCGHSA enrichment
  18. 2026-09-23 17:54 UTCEPSS rescore
  19. 2026-09-23 07:56 UTCGHSA enrichment
  20. 2026-09-22 19:33 UTCEG score recompute
  21. 2026-09-22 19:33 UTCGHSA enrichment
  22. 2026-09-22 16:01 UTCEPSS rescore
  23. 2026-09-22 07:11 UTCEG score recompute
  24. 2026-09-22 07:11 UTCGHSA enrichment
  25. 2026-09-21 21:09 UTCEPSS rescore
  26. 2026-09-21 18:50 UTCGHSA enrichment
  27. 2026-09-21 06:29 UTCEG score recompute
  28. 2026-09-21 06:29 UTCGHSA enrichment
  29. 2026-09-20 20:16 UTCEPSS rescore
  30. 2026-09-20 18:08 UTCGHSA enrichment
  31. 2026-09-20 05:47 UTCGHSA enrichment
  32. 2026-09-19 17:26 UTCEG score recompute
  33. 2026-09-19 17:26 UTCGHSA enrichment
  34. 2026-09-19 05:05 UTCEG score recompute
  35. 2026-09-19 05:05 UTCGHSA enrichment
  36. 2026-09-18 19:28 UTCEPSS rescore
  37. 2026-09-18 16:44 UTCGHSA enrichment
  38. 2026-09-18 04:23 UTCEG score recompute
  39. 2026-09-18 04:23 UTCGHSA enrichment
  40. 2026-09-17 19:32 UTCEPSS rescore
  41. 2026-09-17 16:02 UTCGHSA enrichment
  42. 2026-09-17 03:41 UTCEG score recompute
  43. 2026-09-17 03:41 UTCGHSA enrichment
  44. 2026-09-16 15:19 UTCEG score recompute
  45. 2026-09-16 15:19 UTCGHSA enrichment
  46. 2026-09-16 14:48 UTCEG score recompute▲ 8.40
  47. 2026-09-16 14:48 UTCGHSA enrichment
  48. 2026-09-16 14:45 UTCMITRE cvelistV5CVSS v3 → 8.4 · severity → HIGH
  49. 2026-09-16 11:21 UTCNVD update
  50. 2026-09-16 10:39 UTCEG score recompute
  51. 2026-09-16 10:36 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-89904?
CVE-2026-89904 is a high vulnerability published on September 16, 2026. In the Linux kernel, the following vulnerability has been resolved: LoongArch: Fix acpipackageids[] array overflow With LoongArch virt machine, a typical setting is one core per socket, there will max 256 sockets (packages) on one VM. With PPTT acpi table, array acpipackageids[] will be overflowed.…
When was CVE-2026-89904 disclosed?
CVE-2026-89904 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-2026-89904 actively exploited?
CVE-2026-89904 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (8th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-89904?
CVE-2026-89904 has a CVSS base score of 8.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-89904?
No fix for CVE-2026-89904 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-2026-89904 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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