CVE-2026-89922

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 — 4 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:

KVM: s390: Take srcu when importing watchpoint data

__import_wp_info() backs up the original guest memory contents of a watchpoint with read_guest_abs(), which is kvm_read_guest() and therefore resolves the memslot via __kvm_memslots(). That requires kvm->srcu (or kvm->slots_lock) to be held, otherwise a concurrent memslot update can free the memslots array under us once its SRCU grace period has elapsed.

As this is not fast path, following lock ordering (mutex first, then srcu) take the big hammer and hold the srcu for the full import.

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 16, 2026

Advisory Details (6)

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

KVM: s390: Take srcu when importing watchpoint data - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f8e3a9997d5ecd56ebe4b262ff424516c068fecb
generic

KVM: s390: Take srcu when importing watchpoint data - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cc710ee45395efb4937e042960f791d33924e5f6
generic

KVM: s390: Take srcu when importing watchpoint data - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a4e482def8533ebace517d9f67f1465841b1f982
generic

KVM: s390: Take srcu when importing watchpoint data - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/76f5b4ea9ed0aa5a34bda9d8a878f2c73026ec03
generic

KVM: s390: Take srcu when importing watchpoint data - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6830fbc3724bf49c142aae69a4694f115fa9cedd
generic

KVM: s390: Take srcu when importing watchpoint data - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4c05bf21d1806853e662cc19e744736a3408f155

Vendor Advisories for CVE-2026-89922(2)

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

Affected Packages

(4 across 3 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (360 versions)
  • every version on: no fix on record
—
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 42× in last 7d / 118× 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 118 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-89922?
CVE-2026-89922 is a high vulnerability published on September 16, 2026. In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Take srcu when importing watchpoint data importwpinfo() backs up the original guest memory contents of a watchpoint with readguestabs(), which is kvmreadguest() and therefore resolves the memslot via kvm_memslots(). That…
When was CVE-2026-89922 disclosed?
CVE-2026-89922 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-2026-89922 actively exploited?
CVE-2026-89922 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-2026-89922?
CVE-2026-89922 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-2026-89922?
No fix for CVE-2026-89922 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-2026-89922 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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