CVE-2026-64042

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-19. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 4 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

vfio/pci: Check BAR resources before exporting a DMABUF

A DMABUF exports access to BAR resources and, although they are requested at startup time, we need to ensure they really were reserved before exporting. Otherwise, it's possible to access unreserved resources through the export.

Add a check to the DMABUF-creation path.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

July 19, 2026

Last Modified

August 5, 2026

Advisory Details (2)

Auto-updated Jul 20, 2026
No patch confirmed yet.
generic

vfio/pci: Check BAR resources before exporting a DMABUF - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8443cd4497a4498c4b01058d76a92116244cb605
generic

vfio/pci: Check BAR resources before exporting a DMABUF - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/702809dabdecca807bdd50cfdcc1c980feb2ba62

Vendor Advisories for CVE-2026-64042(1)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-30ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-30ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-30ubuntu

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 ... 7.0.9-1~bpo13+1 (138 versions)7.0.12-1—

All Vendor Advisories

(5)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 28× in last 7d / 166× 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 214 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-64042?
CVE-2026-64042 is a high vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Check BAR resources before exporting a DMABUF A DMABUF exports access to BAR resources and, although they are requested at startup time, we need to ensure they really were reserved before exporting. Otherwise, it's…
When was CVE-2026-64042 disclosed?
CVE-2026-64042 was first published in the National Vulnerability Database on July 19, 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-2026-64042 actively exploited?
CVE-2026-64042 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 95.2% of all scored CVEs.
What is the CVSS score of CVE-2026-64042?
CVE-2026-64042 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-64042?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64042, 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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