CVE-2026-45931

HIGHPre-NVD 7.87.8
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-27. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

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

accel/amdxdna: Hold mm structure across iommu_sva_unbind_device()

Some tests trigger a crash in iommu_sva_unbind_device() due to accessing iommu_mm after the associated mm structure has been freed.

Fix this by taking an explicit reference to the mm structure after successfully binding the device, and releasing it only after the device is unbound. This ensures the mm remains valid for the entire SVA bind/unbind lifetime.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

May 27, 2026

Last Modified

August 5, 2026

Advisory Details (3)

Auto-updated Jun 4, 2026
No patch confirmed yet.
generic

accel/amdxdna: Hold mm structure across iommu_sva_unbind_device() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f6b4c1d98a7b8040d4d02e89425b3942016a2c2c
generic

accel/amdxdna: Hold mm structure across iommu_sva_unbind_device() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f31ccf6278132a35a652fe5eeac3941e1e912398
generic

accel/amdxdna: Hold mm structure across iommu_sva_unbind_device() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a9162439ad792afcddc04718408ec1380b7a5f63

Vendor Advisories for CVE-2026-45931(1)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 6.18.14osv

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

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.18~rc7-1~exp1 (103 versions)6.18.14-1

Data Freshness Timeline

(refreshed 9× in last 7d / 32× 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 234 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-45931?
CVE-2026-45931 is a high vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Hold mm structure across iommusvaunbind_device() Some tests trigger a crash in iommusvaunbind_device() due to accessing iommu_mm after the associated mm structure has been freed. Fix this by taking an explicit…
When was CVE-2026-45931 disclosed?
CVE-2026-45931 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45931 actively exploited?
CVE-2026-45931 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 92.9% of all scored CVEs.
What is the CVSS score of CVE-2026-45931?
CVE-2026-45931 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-45931?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45931, 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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