CVE-2026-64290

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-07-25. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
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:

iommufd: Break the loop on failure in iommufd_fault_fops_read()

On a copy_to_user() failure inside the inner list_for_each_entry, only the inner loop breaks; the outer while re-fetches the just-restored fault group and retries the failing copy_to_user() forever, spinning the reader at 100% CPU with fault->mutex held.

Check rc after the inner loop and break the outer while as well.

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
6%
KEV
Not listed

Published

July 25, 2026

Last Modified

August 17, 2026

Advisory Details (4)

Auto-updated Aug 12, 2026
No patch confirmed yet.
generic

iommufd: Break the loop on failure in iommufd_fault_fops_read() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f66c16b175509642ee7082df57c9bf3deaebae1a
generic

iommufd: Break the loop on failure in iommufd_fault_fops_read() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a38e0714affc5c0bbb40cba5a65d6d32a5e72a71
generic

iommufd: Break the loop on failure in iommufd_fault_fops_read() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5539da127d03c1f6c2e2a49fdfbe331a0ccbdea8
generic

iommufd: Break the loop on failure in iommufd_fault_fops_read() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/172fc8b19825a0f5884c38f2289188284e2d45ee

Vendor Advisories for CVE-2026-64290(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 (7.0.0-31.31) @ resolute2026-09-20ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-20ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1019.19) @ resolute2026-09-20ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1013.13) @ resolute2026-09-20ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1018.18~24.04.1) @ noble2026-09-20ubuntu

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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux-6.126.12.100-1~deb12u16.12.101-1~deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.12.96-1 (32 versions)6.12.101-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (158 versions)7.1.4-1—

Weakness Classification(1)

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 18× in last 7d / 73× 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 133 total refreshes for this CVE.

  1. 2026-09-20 01:35 UTCEG score recompute
  2. 2026-09-20 01:35 UTCVendor advisory
  3. 2026-09-20 01:35 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 02:51 UTCEG score recompute
  6. 2026-09-18 02:51 UTCVendor advisory
  7. 2026-09-18 02:51 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 11:57 UTCEG score recompute
  10. 2026-09-16 11:57 UTCVendor advisory
  11. 2026-09-16 11:57 UTCGHSA enrichment
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-15 09:31 UTCEG score recompute
  14. 2026-09-15 09:31 UTCVendor advisory
  15. 2026-09-15 09:31 UTCGHSA enrichment
  16. 2026-09-13 21:39 UTCEG score recompute
  17. 2026-09-13 21:39 UTCVendor advisory
  18. 2026-09-13 21:39 UTCGHSA enrichment
  19. 2026-09-12 17:55 UTCEG score recompute
  20. 2026-09-12 17:55 UTCVendor advisory
  21. 2026-09-12 17:55 UTCGHSA enrichment
  22. 2026-09-11 16:29 UTCEG score recompute
  23. 2026-09-11 16:29 UTCVendor advisory
  24. 2026-09-11 16:29 UTCGHSA enrichment
  25. 2026-09-11 14:53 UTCEPSS rescore
Show 75 more
  1. 2026-09-11 09:37 UTCEPSS rescore
  2. 2026-09-10 13:30 UTCEG score recompute
  3. 2026-09-10 13:30 UTCVendor advisory
  4. 2026-09-10 13:30 UTCGHSA enrichment
  5. 2026-09-09 08:40 UTCEG score recompute
  6. 2026-09-09 08:40 UTCVendor advisory
  7. 2026-09-09 08:40 UTCGHSA enrichment
  8. 2026-09-08 22:01 UTCEPSS rescore
  9. 2026-09-07 21:21 UTCEG score recompute
  10. 2026-09-07 21:21 UTCGHSA enrichment
  11. 2026-09-07 16:01 UTCEPSS rescore
  12. 2026-09-06 13:47 UTCEPSS rescore
  13. 2026-09-05 19:21 UTCEG score recompute
  14. 2026-09-05 19:21 UTCGHSA enrichment
  15. 2026-09-05 15:31 UTCEPSS rescore
  16. 2026-09-04 12:42 UTCEG score recompute
  17. 2026-09-04 12:42 UTCGHSA enrichment
  18. 2026-09-04 05:07 UTCEPSS rescore
  19. 2026-09-02 14:12 UTCEPSS rescore
  20. 2026-09-01 23:14 UTCEG score recompute
  21. 2026-09-01 23:14 UTCGHSA enrichment
  22. 2026-09-01 13:54 UTCEPSS rescore
  23. 2026-09-01 04:40 UTCEPSS rescore
  24. 2026-08-31 01:38 UTCEG score recompute
  25. 2026-08-31 01:38 UTCGHSA enrichment
  26. 2026-08-30 19:17 UTCEPSS rescore
  27. 2026-08-30 01:22 UTCEPSS rescore
  28. 2026-08-30 00:11 UTCEG score recompute
  29. 2026-08-30 00:11 UTCGHSA enrichment
  30. 2026-08-28 21:42 UTCEPSS rescore
  31. 2026-08-27 21:16 UTCEG score recompute
  32. 2026-08-27 21:16 UTCGHSA enrichment
  33. 2026-08-26 19:50 UTCEG score recompute
  34. 2026-08-26 19:50 UTCGHSA enrichment
  35. 2026-08-26 14:47 UTCEPSS rescore
  36. 2026-08-25 17:44 UTCEG score recompute
  37. 2026-08-25 17:44 UTCGHSA enrichment
  38. 2026-08-25 13:49 UTCEPSS rescore
  39. 2026-08-24 15:48 UTCEG score recompute
  40. 2026-08-24 15:48 UTCGHSA enrichment
  41. 2026-08-23 14:21 UTCEG score recompute
  42. 2026-08-23 14:21 UTCGHSA enrichment
  43. 2026-08-23 00:19 UTCEPSS rescore
  44. 2026-08-22 12:56 UTCEG score recompute
  45. 2026-08-22 12:56 UTCGHSA enrichment
  46. 2026-08-21 23:49 UTCEPSS rescore
  47. 2026-08-21 11:29 UTCEG score recompute
  48. 2026-08-21 11:29 UTCGHSA enrichment
  49. 2026-08-20 22:55 UTCEPSS rescore
  50. 2026-08-20 09:42 UTCEG score recompute
  51. 2026-08-20 09:42 UTCGHSA enrichment
  52. 2026-08-19 17:04 UTCEPSS rescore
  53. 2026-08-19 08:17 UTCEG score recompute
  54. 2026-08-19 08:17 UTCGHSA enrichment
  55. 2026-08-18 13:48 UTCEPSS rescore
  56. 2026-08-18 06:52 UTCEG score recompute
  57. 2026-08-18 06:51 UTCGHSA enrichment
  58. 2026-08-17 13:47 UTCEPSS rescore
  59. 2026-08-17 05:21 UTCGHSA enrichment
  60. 2026-08-16 21:59 UTCEG score recompute
  61. 2026-08-16 21:59 UTCGHSA enrichment
  62. 2026-08-16 14:56 UTCEPSS rescore
  63. 2026-08-15 20:33 UTCEG score recompute
  64. 2026-08-15 20:33 UTCGHSA enrichment
  65. 2026-08-15 01:30 UTCEPSS rescore
  66. 2026-08-14 19:07 UTCEG score recompute
  67. 2026-08-14 19:07 UTCGHSA enrichment
  68. 2026-08-13 22:00 UTCEPSS rescore
  69. 2026-08-13 17:41 UTCEG score recompute
  70. 2026-08-13 17:41 UTCGHSA enrichment
  71. 2026-08-12 16:12 UTCEG score recompute▲ 5.50
  72. 2026-08-12 16:12 UTCGHSA enrichment
  73. 2026-08-12 16:12 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  74. 2026-08-12 13:51 UTCEPSS rescore
  75. 2026-08-11 00:00 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-64290?
CVE-2026-64290 is a medium vulnerability published on July 25, 2026. In the Linux kernel, the following vulnerability has been resolved: iommufd: Break the loop on failure in iommufdfaultfops_read() On a copytouser() failure inside the inner listforeach_entry, only the inner loop breaks; the outer while re-fetches the just-restored fault group and retries the…
When was CVE-2026-64290 disclosed?
CVE-2026-64290 was first published in the National Vulnerability Database on July 25, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64290 actively exploited?
CVE-2026-64290 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 94.5% of all scored CVEs.
What is the CVSS score of CVE-2026-64290?
CVE-2026-64290 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-64290?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64290, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-64290

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