CVE-2026-45861

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-27. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
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

A fix is available — apply it.

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)
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
6%
KEV
Not listed

Published

May 27, 2026

Last Modified

August 5, 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.

Patch Availability(13)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-realtime-hwe-22.04 (6.8.1-1055.56~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-lowlatency-hwe-22.04-edge (6.8.0-134.134.1~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-134.134+fips1) @ noble2026-08-25ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1058.61.1) @ noble2026-08-25ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1029.30) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1032.33) @ noble2026-08-25ubuntu
ubuntulinux-tools-raspi-6.8 (6.8.0-1060.64) @ noble2026-08-25ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2049.50) @ noble2026-08-25ubuntu
linuxKernel @ 6.12.75—osv

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

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)6.12.85-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.18~rc7-1~exp1 (100 versions)6.18.14-1—

Weakness Classification(1)

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

All Vendor Advisories

(12)

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 4× in last 7d / 85× 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 249 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

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 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-2026-45861 actively exploited?
CVE-2026-45861 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 94.1% of all scored CVEs.
What is the CVSS score of CVE-2026-45861?
CVE-2026-45861 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
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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