CVE-2026-53322

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-26. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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: Clean up DMABUFs before disabling function

On device shutdown, make vfio_pci_core_close_device() call vfio_pci_dma_buf_cleanup() before the function is disabled via vfio_pci_core_disable(). This ensures that all access via DMABUFs is revoked before the function's BARs become inaccessible.

This fixes an issue where, if the function is disabled first, a tiny window exists in which the function's MSE is cleared and yet BARs could still be accessed via the DMABUF. The resources would also be freed and up for grabs by a different driver.

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
3%
KEV
Not listed

Published

June 26, 2026

Last Modified

July 15, 2026

Advisory Details (2)

Auto-updated Jun 28, 2026
No patch confirmed yet.
generic

vfio/pci: Clean up DMABUFs before disabling function - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d97708701434ce72968e771976aaf9d3438fcafd
generic

vfio/pci: Clean up DMABUFs before disabling function - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4f1000a30f67cf7d328059242776a858611d5ef9

Vendor Advisories for CVE-2026-53322(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-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-07-26ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-07-26ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-07-26ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-07-26ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-07-26ubuntu

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.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

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 13× in last 7d / 86× 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. 2026-07-27 01:44 UTCEG score recompute
  2. 2026-07-27 01:44 UTCGHSA enrichment
  3. 2026-07-26 14:54 UTCEPSS rescore
  4. 2026-07-26 14:29 UTCEG score recompute
  5. 2026-07-26 14:29 UTCVendor advisory
  6. 2026-07-26 14:29 UTCGHSA enrichment
  7. 2026-07-25 14:18 UTCEPSS rescore
  8. 2026-07-24 14:18 UTCEPSS rescore
  9. 2026-07-23 14:18 UTCEPSS rescore
  10. 2026-07-23 03:19 UTCEG score recompute
  11. 2026-07-22 14:08 UTCEPSS rescore
  12. 2026-07-21 15:25 UTCEPSS rescore
  13. 2026-07-20 17:08 UTCEPSS rescore
  14. 2026-07-19 14:31 UTCEPSS rescore
  15. 2026-07-19 14:31 UTCEPSS rescore
  16. 2026-07-19 02:29 UTCEPSS rescore
  17. 2026-07-18 10:04 UTCEPSS rescore
  18. 2026-07-16 19:53 UTCGHSA enrichment
  19. 2026-07-16 17:03 UTCEPSS rescore
  20. 2026-07-16 08:10 UTCGHSA enrichment
  21. 2026-07-15 20:56 UTCGHSA enrichment
  22. 2026-07-15 16:57 UTCEPSS rescore
  23. 2026-07-15 16:57 UTCEPSS rescore
  24. 2026-07-15 09:39 UTCGHSA enrichment
  25. 2026-07-15 02:00 UTCEPSS rescore
Show 63 more
  1. 2026-07-15 02:00 UTCEPSS rescore
  2. 2026-07-14 22:19 UTCGHSA enrichment
  3. 2026-07-14 11:06 UTCGHSA enrichment
  4. 2026-07-13 23:51 UTCGHSA enrichment
  5. 2026-07-13 22:31 UTCEPSS rescore
  6. 2026-07-13 12:38 UTCGHSA enrichment
  7. 2026-07-13 06:13 UTCEPSS rescore
  8. 2026-07-13 06:13 UTCEPSS rescore
  9. 2026-07-13 01:24 UTCGHSA enrichment
  10. 2026-07-12 14:09 UTCGHSA enrichment
  11. 2026-07-12 05:46 UTCEPSS rescore
  12. 2026-07-12 02:44 UTCGHSA enrichment
  13. 2026-07-11 15:30 UTCGHSA enrichment
  14. 2026-07-11 08:27 UTCEPSS rescore
  15. 2026-07-11 08:27 UTCEPSS rescore
  16. 2026-07-11 04:16 UTCGHSA enrichment
  17. 2026-07-10 17:02 UTCGHSA enrichment
  18. 2026-07-10 05:47 UTCGHSA enrichment
  19. 2026-07-09 19:10 UTCEPSS rescore
  20. 2026-07-09 19:10 UTCEPSS rescore
  21. 2026-07-09 18:34 UTCGHSA enrichment
  22. 2026-07-09 07:16 UTCGHSA enrichment
  23. 2026-07-08 20:02 UTCGHSA enrichment
  24. 2026-07-08 15:16 UTCEPSS rescore
  25. 2026-07-08 15:16 UTCEPSS rescore
  26. 2026-07-08 08:47 UTCGHSA enrichment
  27. 2026-07-07 21:32 UTCGHSA enrichment
  28. 2026-07-07 13:46 UTCEPSS rescore
  29. 2026-07-07 13:46 UTCEPSS rescore
  30. 2026-07-07 10:18 UTCGHSA enrichment
  31. 2026-07-06 22:54 UTCGHSA enrichment
  32. 2026-07-06 16:27 UTCEPSS rescore
  33. 2026-07-06 16:27 UTCEPSS rescore
  34. 2026-07-06 11:40 UTCGHSA enrichment
  35. 2026-07-06 02:23 UTCEPSS rescore
  36. 2026-07-06 02:23 UTCEPSS rescore
  37. 2026-07-06 00:25 UTCGHSA enrichment
  38. 2026-07-05 13:10 UTCGHSA enrichment
  39. 2026-07-05 02:31 UTCEPSS rescore
  40. 2026-07-05 02:30 UTCEPSS rescore
  41. 2026-07-05 01:56 UTCGHSA enrichment
  42. 2026-07-04 14:43 UTCGHSA enrichment
  43. 2026-07-04 06:31 UTCEPSS rescore
  44. 2026-07-04 06:31 UTCEPSS rescore
  45. 2026-07-04 03:29 UTCGHSA enrichment
  46. 2026-07-03 16:14 UTCGHSA enrichment
  47. 2026-07-03 05:01 UTCGHSA enrichment
  48. 2026-07-02 17:46 UTCGHSA enrichment
  49. 2026-07-02 06:33 UTCGHSA enrichment
  50. 2026-07-01 19:16 UTCGHSA enrichment
  51. 2026-07-01 15:07 UTCEPSS rescore
  52. 2026-07-01 08:02 UTCGHSA enrichment
  53. 2026-06-30 23:22 UTCEPSS rescore
  54. 2026-06-30 20:48 UTCGHSA enrichment
  55. 2026-06-30 09:35 UTCGHSA enrichment
  56. 2026-06-29 22:20 UTCEG score recompute▲ 8.80
  57. 2026-06-29 22:20 UTCGHSA enrichment
  58. 2026-06-28 14:07 UTCEPSS rescore
  59. 2026-06-28 07:52 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  60. 2026-06-28 04:56 UTCEPSS rescore
  61. 2026-06-28 04:56 UTCEPSS rescore
  62. 2026-06-26 21:37 UTCEG score recompute
  63. 2026-06-26 21:37 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-53322?
CVE-2026-53322 is a high vulnerability published on June 26, 2026. In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Clean up DMABUFs before disabling function On device shutdown, make vfiopcicoreclosedevice() call vfiopcidmabufcleanup() before the function is disabled via vfiopcicore_disable(). This ensures that all access via DMABUFs…
When was CVE-2026-53322 disclosed?
CVE-2026-53322 was first published in the National Vulnerability Database on June 26, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53322 actively exploited?
CVE-2026-53322 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 97.1% of all scored CVEs.
What is the CVSS score of CVE-2026-53322?
CVE-2026-53322 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-53322?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53322, 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

Explore the affected products and dependency analysis for CVE-2026-53322

Explore →

Is Your Infrastructure Affected by CVE-2026-53322?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs