CVE-2023-53867

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2025-12-24. the CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

ceph: fix potential use-after-free bug when trimming caps

When trimming the caps and just after the 'session->s_cap_lock' is released in ceph_iterate_session_caps() the cap maybe removed by another thread, and when using the stale cap memory in the callbacks it will trigger use-after-free crash.

We need to check the existence of the cap just after the 'ci->i_ceph_lock' being acquired. And do nothing if it's already removed.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

December 24, 2025

Last Modified

August 5, 2026

Advisory Details (4)

Auto-updated Sep 16, 2026
No patch confirmed yet.
generic

ceph: fix potential use-after-free bug when trimming caps - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/aaf67de78807c59c35bafb5003d4fb457c764800
generic

ceph: fix potential use-after-free bug when trimming caps - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ae6e935618d99cdba11eab4714092e7e5f13cf7e
generic

ceph: fix potential use-after-free bug when trimming caps - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/448875a73e16ba7d81dec9274ce9d33a12d092fb
generic

ceph: fix potential use-after-free bug when trimming caps - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2b2515b8095cf2149bef44383a99d5b5677f1831

Vendor Advisories for CVE-2023-53867(3)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:4.18.0-553.el8_102024-05-22redhat
redhatkernel-0:5.14.0-362.8.1.el9_32023-11-07redhat
linuxKernel @ 6.1.28—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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 7.2~rc5-1~exp1 (498 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.27-16.1.37-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.3.7-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.3.7-1—

Data Freshness Timeline

(refreshed 8× in last 7d / 30× 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 195 total refreshes for this CVE.

  1. 2026-09-18 19:26 UTCEPSS rescore
  2. 2026-09-16 14:06 UTCEPSS rescore
  3. 2026-09-16 05:11 UTCEPSS rescore
  4. 2026-09-16 05:11 UTCEPSS rescore
  5. 2026-09-15 03:08 UTCEPSS rescore
  6. 2026-09-14 05:50 UTCOSV refresh
  7. 2026-09-13 16:45 UTCEPSS rescore
  8. 2026-09-12 14:58 UTCEPSS rescore
  9. 2026-09-11 14:51 UTCEPSS rescore
  10. 2026-09-11 09:34 UTCEPSS rescore
  11. 2026-09-08 21:58 UTCEPSS rescore
  12. 2026-09-07 15:59 UTCEPSS rescore
  13. 2026-09-06 13:46 UTCEPSS rescore
  14. 2026-09-05 15:26 UTCEPSS rescore
  15. 2026-09-04 13:58 UTCEPSS rescore
  16. 2026-09-04 05:04 UTCEPSS rescore
  17. 2026-09-02 14:10 UTCEPSS rescore
  18. 2026-09-01 13:52 UTCEPSS rescore
  19. 2026-09-01 04:36 UTCEPSS rescore
  20. 2026-08-30 19:15 UTCEPSS rescore
  21. 2026-08-30 01:20 UTCEPSS rescore
  22. 2026-08-28 21:39 UTCEPSS rescore
  23. 2026-08-27 14:23 UTCEPSS rescore
  24. 2026-08-26 14:44 UTCEPSS rescore
  25. 2026-08-26 07:13 UTCOSV refresh
Show 75 more
  1. 2026-08-25 13:47 UTCEPSS rescore
  2. 2026-08-23 00:17 UTCEPSS rescore
  3. 2026-08-23 00:17 UTCEPSS rescore
  4. 2026-08-21 23:47 UTCEPSS rescore
  5. 2026-08-20 22:53 UTCEPSS rescore
  6. 2026-08-19 17:02 UTCEPSS rescore
  7. 2026-08-18 13:46 UTCEPSS rescore
  8. 2026-08-16 14:54 UTCEPSS rescore
  9. 2026-08-16 02:12 UTCEPSS rescore
  10. 2026-08-15 01:28 UTCEPSS rescore
  11. 2026-08-13 21:58 UTCEPSS rescore
  12. 2026-08-12 13:49 UTCEPSS rescore
  13. 2026-08-11 13:40 UTCEPSS rescore
  14. 2026-08-10 23:58 UTCEPSS rescore
  15. 2026-08-09 22:56 UTCEG score recompute
  16. 2026-08-09 22:56 UTCVendor advisory
  17. 2026-08-09 22:56 UTCGHSA enrichment
  18. 2026-08-09 13:44 UTCEPSS rescore
  19. 2026-08-08 16:35 UTCEPSS rescore
  20. 2026-08-08 09:08 UTCVendor advisory
  21. 2026-08-08 09:08 UTCGHSA enrichment
  22. 2026-08-08 05:29 UTCEG score recompute
  23. 2026-08-08 05:29 UTCVendor advisory
  24. 2026-08-08 05:29 UTCGHSA enrichment
  25. 2026-08-07 16:25 UTCEPSS rescore
  26. 2026-08-06 13:45 UTCEPSS rescore
  27. 2026-08-06 07:19 UTCEG score recompute
  28. 2026-08-06 07:19 UTCVendor advisory
  29. 2026-08-06 07:19 UTCGHSA enrichment
  30. 2026-08-05 19:15 UTCEPSS rescore
  31. 2026-08-05 19:15 UTCEPSS rescore
  32. 2026-08-05 10:15 UTCEG score recompute
  33. 2026-08-05 10:15 UTCVendor advisory
  34. 2026-08-05 10:15 UTCGHSA enrichment
  35. 2026-08-04 10:51 UTCEG score recompute
  36. 2026-08-04 10:51 UTCVendor advisory
  37. 2026-08-04 10:51 UTCGHSA enrichment
  38. 2026-08-04 09:26 UTCEG score recompute▲ 9.80
  39. 2026-08-04 09:26 UTCVendor advisory
  40. 2026-08-04 09:26 UTCGHSA enrichment
  41. 2026-08-04 09:20 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  42. 2026-08-03 10:34 UTCEPSS rescore
  43. 2026-08-02 02:25 UTCEPSS rescore
  44. 2026-08-02 02:25 UTCEPSS rescore
  45. 2026-08-01 04:14 UTCEPSS rescore
  46. 2026-07-30 16:26 UTCEPSS rescore
  47. 2026-07-30 01:29 UTCEPSS rescore
  48. 2026-07-28 15:34 UTCEPSS rescore
  49. 2026-07-28 15:34 UTCEPSS rescore
  50. 2026-07-27 03:39 UTCOSV refresh
  51. 2026-07-26 14:53 UTCEPSS rescore
  52. 2026-07-24 14:16 UTCEPSS rescore
  53. 2026-07-23 14:16 UTCEPSS rescore
  54. 2026-07-23 02:30 UTCEG score recompute
  55. 2026-07-22 23:16 UTCEG score recompute
  56. 2026-07-22 14:07 UTCEPSS rescore
  57. 2026-07-22 14:07 UTCEPSS rescore
  58. 2026-07-21 15:23 UTCEPSS rescore
  59. 2026-07-20 17:06 UTCEPSS rescore
  60. 2026-07-19 14:30 UTCEPSS rescore
  61. 2026-07-19 14:29 UTCEPSS rescore
  62. 2026-07-19 02:27 UTCEPSS rescore
  63. 2026-07-19 02:27 UTCEPSS rescore
  64. 2026-07-18 10:03 UTCEPSS rescore
  65. 2026-07-18 10:03 UTCEPSS rescore
  66. 2026-07-16 17:01 UTCEPSS rescore
  67. 2026-07-15 16:56 UTCEPSS rescore
  68. 2026-07-15 01:59 UTCEPSS rescore
  69. 2026-07-15 01:59 UTCEPSS rescore
  70. 2026-07-13 22:28 UTCEPSS rescore
  71. 2026-07-13 22:28 UTCEPSS rescore
  72. 2026-07-13 06:11 UTCEPSS rescore
  73. 2026-07-12 05:45 UTCEPSS rescore
  74. 2026-07-12 05:45 UTCEPSS rescore
  75. 2026-07-11 08:26 UTCEPSS rescore

Frequently asked(5)

What is CVE-2023-53867?
CVE-2023-53867 is a critical vulnerability published on December 24, 2025. In the Linux kernel, the following vulnerability has been resolved: ceph: fix potential use-after-free bug when trimming caps When trimming the caps and just after the 'session->scaplock' is released in cephiteratesession_caps() the cap maybe removed by another thread, and when using the stale cap…
When was CVE-2023-53867 disclosed?
CVE-2023-53867 was first published in the National Vulnerability Database on December 24, 2025, 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-2023-53867 actively exploited?
CVE-2023-53867 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.1% of all scored CVEs.
What is the CVSS score of CVE-2023-53867?
CVE-2023-53867 has a CVSS v4.0 base score of 9.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2023-53867?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-53867, 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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