CVE-2026-53026

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-24. the CNA's CVSS baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

NFSD: fix nfs4_file access extra count in nfsd4_add_rdaccess_to_wrdeleg

In nfsd4_add_rdaccess_to_wrdeleg, if fp->fi_fds[O_RDONLY] is already set by another thread, __nfs4_file_get_access should not be called to increment the nfs4_file access count since that was already done by the thread that added READ access to the file. The extra fi_access count in nfs4_file can prevent the corresponding nfsd_file from being freed.

When stopping nfs-server service, these extra access counts trigger a BUG in kmem_cache_destroy() that shows nfsd_file object remaining on __kmem_cache_shutdown.

This problem can be reproduced by running the Git project's test suite over NFS.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

June 24, 2026

Last Modified

August 5, 2026

Advisory Details (3)

Auto-updated Jun 30, 2026
No patch confirmed yet.
generic

NFSD: fix nfs4_file access extra count in nfsd4_add_rdaccess_to_wrdeleg - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b81572b073441dfd32213e41857676d0dbff4665
generic

NFSD: fix nfs4_file access extra count in nfsd4_add_rdaccess_to_wrdeleg - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b48f44f36e6607b2f818560f19deb86b4a9c717b
generic

NFSD: fix nfs4_file access extra count in nfsd4_add_rdaccess_to_wrdeleg - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4584229395d0d65bd517780afe97ffea07cb2c3d

Vendor Advisories for CVE-2026-53026(2)

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

Patch Availability(8)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-30ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16~24.04.1) @ noble2026-08-30ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-30ubuntu
ubuntulinux-tools-oem-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-azure-fde-7.0 (7.0.0-1009.9) @ 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 (137 versions)7.0.10-1—

All Vendor Advisories

(8)

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 9× in last 7d / 121× 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 256 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-53026?
CVE-2026-53026 is a high vulnerability published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: NFSD: fix nfs4file access extra count in nfsd4addrdaccessto_wrdeleg In nfsd4addrdaccesstowrdeleg, if fp->fifds[ORDONLY] is already set by another thread, nfs4fileget_access should not be called to increment the nfs4_file access…
When was CVE-2026-53026 disclosed?
CVE-2026-53026 was first published in the National Vulnerability Database on June 24, 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-2026-53026 actively exploited?
CVE-2026-53026 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 64.3% of all scored CVEs.
What is the CVSS score of CVE-2026-53026?
CVE-2026-53026 has a CVSS v4.0 base score of 7.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-53026?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53026, 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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