CVE-2026-53381

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-19. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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:

virtiofs: fix UAF on submount umount

iput() called from fuse_release_end() can Oops if the super block has already been destroyed. Normally this is prevented by waiting for num_waiting to go down to zero before commencing with super block shutdown.

This only works, however, for the last submount instance, as the wait counter is per connection, not per superblock.

Revert to using synchronous release requests for the auto_submounts case, which is virtiofs only at this time.

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
4%
KEV
Not listed

Published

July 19, 2026

Last Modified

August 17, 2026

Advisory Details (9)

Auto-updated Jul 21, 2026
No patch confirmed yet.
generic

virtiofs: fix UAF on submount umount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e09412a714bcd49375198427bb4aa005037a9d6f
generic

virtiofs: fix UAF on submount umount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/97c4691653d145dcc699eca5d3aba3219a520f1f
generic

virtiofs: fix UAF on submount umount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/607a1d4c42f649e6197567c0448fd9ebb316cd42
generic

virtiofs: fix UAF on submount umount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/39a2b95e008665c14f84e50ed411d898df7cd11b
generic

virtiofs: fix UAF on submount umount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2abfd3ffbd9452f72535d96ff3982b3ab1f8f2f9
generic

virtiofs: fix UAF on submount umount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2181a09ba980f142650fb053666350ead4471cfe
generic

virtiofs: fix UAF on submount umount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1cc0e3a0c6499aaaa2f21a4fcbba388486afb25e
generic

virtiofs: fix UAF on submount umount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0b809199ff87c44487e516a725dd4be2185712ce
generic

virtiofs: fix UAF on submount umount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/06b41351779e9289e8785694ade9042ae85e41ea

Vendor Advisories for CVE-2026-53381(2)

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

Affected Packages

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (55 versions)5.10.262-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.176-1~deb11u1 (21 versions)6.1.177-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (54 versions)6.1.177-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.95-1~bpo12+1 (29 versions)6.12.95-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (143 versions)7.0.14-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 32× in last 7d / 138× 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 175 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-53381?
CVE-2026-53381 is a high vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: virtiofs: fix UAF on submount umount iput() called from fusereleaseend() can Oops if the super block has already been destroyed. Normally this is prevented by waiting for num_waiting to go down to zero before commencing with super…
When was CVE-2026-53381 disclosed?
CVE-2026-53381 was first published in the National Vulnerability Database on July 19, 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-2026-53381 actively exploited?
CVE-2026-53381 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 96.5% of all scored CVEs.
What is the CVSS score of CVE-2026-53381?
CVE-2026-53381 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-53381?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53381, 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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