CVE-2026-31455

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-04-22. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 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:

xfs: stop reclaim before pushing AIL during unmount

The unmount sequence in xfs_unmount_flush_inodes() pushed the AIL while background reclaim and inodegc are still running. This is broken independently of any use-after-free issues - background reclaim and inodegc should not be running while the AIL is being pushed during unmount, as inodegc can dirty and insert inodes into the AIL during the flush, and background reclaim can race to abort and free dirty inodes.

Reorder xfs_unmount_flush_inodes() to stop inodegc and cancel background reclaim before pushing the AIL. Stop inodegc before cancelling m_reclaim_work because the inodegc worker can re-queue m_reclaim_work via xfs_inodegc_set_reclaimable.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
2.6%
KEV
Not listed

Published

April 22, 2026

Last Modified

June 5, 2026

Advisory Details (8)

Auto-updated May 5, 2026
No patch confirmed yet.
generic

xfs: stop reclaim before pushing AIL during unmount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e6cc490048f78b009259a5f032acead9f789c34c
generic

xfs: stop reclaim before pushing AIL during unmount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d38135af04a3ad8a585c899d176efc8e97853115
generic

xfs: stop reclaim before pushing AIL during unmount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bda27fc0b4eb3a425d9a18475c4cb94fbe862c60
generic

xfs: stop reclaim before pushing AIL during unmount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a89434a6188d8430ea31120da96e3e4cefb58686
generic

xfs: stop reclaim before pushing AIL during unmount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8147e304d7d32fd5c3e943babc296ce2873dc279
generic

xfs: stop reclaim before pushing AIL during unmount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/558e3275d8a3b101be18a7fe7d1634053e9d9b07
generic

xfs: stop reclaim before pushing AIL during unmount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4f24a767e3d64a5f58c595b5c29b6063a201f1e3
generic

xfs: stop reclaim before pushing AIL during unmount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/239d734c00644072862fa833805c4471573b1445

Vendor Advisories for CVE-2026-31455(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 43× 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 159 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-31455?
CVE-2026-31455 is a high vulnerability published on April 22, 2026. In the Linux kernel, the following vulnerability has been resolved: xfs: stop reclaim before pushing AIL during unmount The unmount sequence in xfsunmountflush_inodes() pushed the AIL while background reclaim and inodegc are still running. This is broken independently of any use-after-free issues -…
When was CVE-2026-31455 disclosed?
CVE-2026-31455 was first published in the National Vulnerability Database on April 22, 2026, with the most recent update on June 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-31455 actively exploited?
CVE-2026-31455 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-31455?
CVE-2026-31455 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-31455?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-31455, 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.

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