CVE-2026-45861

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-27. a secondary CVSS source baseline 7.8; sources differ by 0.0.

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

gfs2: Fix slab-use-after-free in qd_put

Commit a475c5dd16e5 ("gfs2: Free quota data objects synchronously") started freeing quota data objects during filesystem shutdown instead of putting them back onto the LRU list, but it failed to remove these objects from the LRU list, causing LRU list corruption. This caused use-after-free when the shrinker (gfs2_qd_shrink_scan) tried to access already-freed objects on the LRU list.

Fix this by removing qd objects from the LRU list before freeing them in qd_put().

Initial fix from Deepanshu Kartikey .

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
5.4%
KEV
Not listed

Published

May 27, 2026

Last Modified

June 25, 2026

Advisory Details (4)

Auto-updated Jun 3, 2026
No patch confirmed yet.
generic

gfs2: Fix slab-use-after-free in qd_put - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ca7c67bdd293089b3483f18886d6b2d0037d2ad9
generic

gfs2: Fix slab-use-after-free in qd_put - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/80fff26d7a0c3926b511661c27eecc811a420eef
generic

gfs2: Fix slab-use-after-free in qd_put - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/22150a7d401d9e9169b9b68e05bed95f7f49bf69
generic

gfs2: Fix slab-use-after-free in qd_put - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1d47922b98046b8070a77347fb883a6523792803

Vendor Advisories for CVE-2026-45861(2)

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 7× in last 7d / 66× 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 165 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-45861?
CVE-2026-45861 is a high vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix slab-use-after-free in qd_put Commit a475c5dd16e5 ("gfs2: Free quota data objects synchronously") started freeing quota data objects during filesystem shutdown instead of putting them back onto the LRU list, but it failed…
When was CVE-2026-45861 disclosed?
CVE-2026-45861 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45861 actively exploited?
CVE-2026-45861 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45861?
CVE-2026-45861 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-45861?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45861, 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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