CVE-2023-53997

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-12-24. 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:

thermal: of: fix double-free on unregistration

Since commit 3d439b1a2ad3 ("thermal/core: Alloc-copy-free the thermal zone parameters structure"), thermal_zone_device_register() allocates a copy of the tzp argument and frees it when unregistering, so thermal_of_zone_register() now ends up leaking its original tzp and double-freeing the tzp copy. Fix this by locating tzp on stack instead.

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

December 24, 2025

Last Modified

August 5, 2026

Advisory Details (2)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

thermal: of: fix double-free on unregistration - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/adce49089412a9ae28f5c666e0bb12fbcd86b3f7
generic

thermal: of: fix double-free on unregistration - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ac4436a5b20e0ef1f608a9ef46c08d5d142f8da6

Vendor Advisories for CVE-2023-53997(2)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:5.14.0-503.11.1.el9_52024-11-12redhat
linuxKernel @ 6.4.8—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
linux—6.4.11-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.4.11-1—

Data Freshness Timeline

(refreshed 8× in last 7d / 29× 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 193 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. 2026-09-01 13:52 UTCEPSS rescore
  18. 2026-09-01 04:36 UTCEPSS rescore
  19. 2026-08-30 19:15 UTCEPSS rescore
  20. 2026-08-30 01:20 UTCEPSS rescore
  21. 2026-08-28 21:39 UTCEPSS rescore
  22. 2026-08-27 14:23 UTCEPSS rescore
  23. 2026-08-26 14:44 UTCEPSS rescore
  24. 2026-08-26 07:13 UTCOSV refresh
  25. 2026-08-25 13:47 UTCEPSS rescore
Show 75 more
  1. 2026-08-23 00:17 UTCEPSS rescore
  2. 2026-08-23 00:17 UTCEPSS rescore
  3. 2026-08-21 23:47 UTCEPSS rescore
  4. 2026-08-20 22:53 UTCEPSS rescore
  5. 2026-08-19 17:02 UTCEPSS rescore
  6. 2026-08-18 13:46 UTCEPSS rescore
  7. 2026-08-16 14:54 UTCEPSS rescore
  8. 2026-08-16 02:12 UTCEPSS rescore
  9. 2026-08-15 01:28 UTCEPSS rescore
  10. 2026-08-13 21:58 UTCEPSS rescore
  11. 2026-08-12 13:49 UTCEPSS rescore
  12. 2026-08-11 13:40 UTCEPSS rescore
  13. 2026-08-10 23:58 UTCEPSS rescore
  14. 2026-08-09 22:55 UTCEG score recompute
  15. 2026-08-09 22:55 UTCVendor advisory
  16. 2026-08-09 22:55 UTCGHSA enrichment
  17. 2026-08-09 13:44 UTCEPSS rescore
  18. 2026-08-08 16:35 UTCEPSS rescore
  19. 2026-08-08 05:29 UTCEG score recompute
  20. 2026-08-08 05:29 UTCVendor advisory
  21. 2026-08-08 05:29 UTCGHSA enrichment
  22. 2026-08-06 13:45 UTCEPSS rescore
  23. 2026-08-06 07:19 UTCEG score recompute
  24. 2026-08-06 07:19 UTCVendor advisory
  25. 2026-08-06 07:19 UTCGHSA enrichment
  26. 2026-08-05 19:15 UTCEPSS rescore
  27. 2026-08-05 19:15 UTCEPSS rescore
  28. 2026-08-05 10:15 UTCEG score recompute
  29. 2026-08-05 10:15 UTCVendor advisory
  30. 2026-08-05 10:15 UTCGHSA enrichment
  31. 2026-08-04 10:51 UTCEG score recompute
  32. 2026-08-04 10:51 UTCVendor advisory
  33. 2026-08-04 10:51 UTCGHSA enrichment
  34. 2026-08-04 10:36 UTCEPSS rescore
  35. 2026-08-04 09:26 UTCEG score recompute▲ 7.80
  36. 2026-08-04 09:26 UTCVendor advisory
  37. 2026-08-04 09:26 UTCGHSA enrichment
  38. 2026-08-04 09:20 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  39. 2026-08-03 10:34 UTCEPSS rescore
  40. 2026-08-02 02:25 UTCEPSS rescore
  41. 2026-08-02 02:25 UTCEPSS rescore
  42. 2026-08-01 04:14 UTCEPSS rescore
  43. 2026-07-30 16:26 UTCEPSS rescore
  44. 2026-07-30 01:29 UTCEPSS rescore
  45. 2026-07-28 15:34 UTCEPSS rescore
  46. 2026-07-28 15:34 UTCEPSS rescore
  47. 2026-07-27 04:09 UTCOSV refresh
  48. 2026-07-26 14:53 UTCEPSS rescore
  49. 2026-07-25 14:16 UTCEPSS rescore
  50. 2026-07-24 14:16 UTCEPSS rescore
  51. 2026-07-23 14:16 UTCEPSS rescore
  52. 2026-07-23 02:30 UTCEG score recompute
  53. 2026-07-22 23:16 UTCEG score recompute
  54. 2026-07-22 14:07 UTCEPSS rescore
  55. 2026-07-22 14:07 UTCEPSS rescore
  56. 2026-07-21 15:23 UTCEPSS rescore
  57. 2026-07-19 14:30 UTCEPSS rescore
  58. 2026-07-19 14:29 UTCEPSS rescore
  59. 2026-07-19 02:27 UTCEPSS rescore
  60. 2026-07-19 02:27 UTCEPSS rescore
  61. 2026-07-18 10:03 UTCEPSS rescore
  62. 2026-07-18 10:03 UTCEPSS rescore
  63. 2026-07-16 17:01 UTCEPSS rescore
  64. 2026-07-15 16:56 UTCEPSS rescore
  65. 2026-07-15 01:59 UTCEPSS rescore
  66. 2026-07-15 01:59 UTCEPSS rescore
  67. 2026-07-13 22:28 UTCEPSS rescore
  68. 2026-07-13 22:28 UTCEPSS rescore
  69. 2026-07-13 06:11 UTCEPSS rescore
  70. 2026-07-12 05:45 UTCEPSS rescore
  71. 2026-07-12 05:45 UTCEPSS rescore
  72. 2026-07-09 22:45 UTCOSV refresh
  73. 2026-07-09 19:08 UTCEPSS rescore
  74. 2026-07-08 15:13 UTCEPSS rescore
  75. 2026-07-07 13:45 UTCEPSS rescore

Frequently asked(5)

What is CVE-2023-53997?
CVE-2023-53997 is a high vulnerability published on December 24, 2025. In the Linux kernel, the following vulnerability has been resolved: thermal: of: fix double-free on unregistration Since commit 3d439b1a2ad3 ("thermal/core: Alloc-copy-free the thermal zone parameters structure"), thermalzonedevice_register() allocates a copy of the tzp argument and frees it when…
When was CVE-2023-53997 disclosed?
CVE-2023-53997 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-2023-53997 actively exploited?
CVE-2023-53997 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 96.2% of all scored CVEs.
What is the CVSS score of CVE-2023-53997?
CVE-2023-53997 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2023-53997?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-53997, 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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