CVE-2026-46131

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-28. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

KVM: x86: check for nEPT/nNPT in slow flush hypercalls

Checking is_guest_mode(vcpu) is incorrect, because translate_nested_gpa() is only valid if an L2 guest is running *with nested EPT/NPT enabled*. Instead use the same condition as translate_nested_gpa() itself.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

May 28, 2026

Last Modified

June 24, 2026

Advisory Details (5)

Auto-updated Jun 24, 2026
No patch confirmed yet.
generic

KVM: x86: check for nEPT/nNPT in slow flush hypercalls - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d6f4e217d663ede5becc2fd6cb612c749677387b
generic

KVM: x86: check for nEPT/nNPT in slow flush hypercalls - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/971f17f5d91045404e3914029ea57c3da90179a4
generic

KVM: x86: check for nEPT/nNPT in slow flush hypercalls - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4c7f8436b19a2a3acc0cb6b6e3becd6796ae5c57
generic

KVM: x86: check for nEPT/nNPT in slow flush hypercalls - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/464af6fc2b1dcc74005b7f58ee3812b17777efee
generic

KVM: x86: check for nEPT/nNPT in slow flush hypercalls - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/45fc766bc756ff1d66f8ca026a9c4f7f764adfae

Vendor Advisories for CVE-2026-46131(2)

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

Patch Availability(22)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-25ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-08-25ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-08-25ubuntu
ubuntulinux-tools-lowlatency-hwe-22.04-edge (6.8.0-136.136.2~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-25ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-25ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-25ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-25ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-25ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-25ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-25ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-25ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-25ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-08-25ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-25ubuntu

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

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.88-1~bpo12+1 (21 versions)6.12.88-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.7-1~bpo13+1 (133 versions)7.0.7-1—

Additional Vendor Advisories

(22)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 4× in last 7d / 66× 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 204 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-46131?
CVE-2026-46131 is a medium vulnerability published on May 28, 2026. In the Linux kernel, the following vulnerability has been resolved: KVM: x86: check for nEPT/nNPT in slow flush hypercalls Checking isguestmode(vcpu) is incorrect, because translatenestedgpa() is only valid if an L2 guest is running with nested EPT/NPT enabled. Instead use the same condition as…
When was CVE-2026-46131 disclosed?
CVE-2026-46131 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on June 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46131 actively exploited?
CVE-2026-46131 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 97.3% of all scored CVEs.
What is the CVSS score of CVE-2026-46131?
CVE-2026-46131 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-46131?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46131, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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