CVE-2023-53751

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2025-12-08. 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: 0%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname

TCP_Server_Info::hostname may be updated once or many times during reconnect, so protect its access outside reconnect path as well and then prevent any potential use-after-free bugs.

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
0%
EPSS %ILE
35%
KEV
Not listed

Published

December 8, 2025

Last Modified

August 5, 2026

Advisory Details (4)

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

cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/90c49fce1c43e1cc152695e20363ff5087897c09
generic

cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0b08c4c499200be67d54c439d56e5ea866869945
generic

cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c511954bf142fe1995aec3c739a9f1a76990283a
generic

cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/64d62ac6d6514cba1305bd08e271ec1843bdd612

Vendor Advisories for CVE-2023-53751(11)

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

Patch Availability(11)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:4.18.0-372.179.1.el8_62026-02-11redhat
redhatkernel-0:4.18.0-477.128.1.el8_82026-02-11redhat
redhatkernel-0:5.14.0-70.165.1.el9_02026-02-11redhat
redhatkernel-rt-0:5.14.0-70.165.1.rt21.237.el9_02026-02-11redhat
redhatkernel-0:4.18.0-305.184.1.el8_42026-02-04redhat
redhatkernel-0:5.14.0-284.155.1.el9_22026-02-04redhat
redhatkernel-rt-0:5.14.0-284.155.1.rt14.440.el9_22026-02-04redhat
redhatkernel-0:4.18.0-193.183.1.el8_22026-01-28redhat
redhatkernel-0:4.18.0-553.82.1.el8_102025-11-03redhat
redhatkernel-0:5.14.0-427.13.1.el9_42024-04-30redhat
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 7× 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 186 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. 2026-09-13 16:45 UTCEPSS rescore
  7. 2026-09-12 14:58 UTCEPSS rescore
  8. 2026-09-12 06:53 UTCOSV refresh
  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. 2026-08-25 13:47 UTCEPSS rescore
Show 75 more
  1. 2026-08-24 12:22 UTCOSV refresh
  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 13:44 UTCEPSS rescore
  16. 2026-08-08 16:35 UTCEPSS rescore
  17. 2026-08-08 08:17 UTCEG score recompute
  18. 2026-08-08 08:17 UTCVendor advisory
  19. 2026-08-08 08:17 UTCGHSA enrichment
  20. 2026-08-07 16:25 UTCEPSS rescore
  21. 2026-08-06 13:45 UTCEPSS rescore
  22. 2026-08-05 19:15 UTCEPSS rescore
  23. 2026-08-05 19:15 UTCEPSS rescore
  24. 2026-08-05 10:15 UTCEG score recompute
  25. 2026-08-05 10:15 UTCVendor advisory
  26. 2026-08-05 10:15 UTCGHSA enrichment
  27. 2026-08-04 10:56 UTCEG score recompute
  28. 2026-08-04 10:56 UTCVendor advisory
  29. 2026-08-04 10:55 UTCGHSA enrichment
  30. 2026-08-04 10:36 UTCEPSS rescore
  31. 2026-08-04 09:27 UTCEG score recompute▲ 9.80
  32. 2026-08-04 09:27 UTCVendor advisory
  33. 2026-08-04 09:27 UTCGHSA enrichment
  34. 2026-08-04 09:20 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  35. 2026-08-03 10:34 UTCEPSS rescore
  36. 2026-08-02 02:25 UTCEPSS rescore
  37. 2026-08-02 02:25 UTCEPSS rescore
  38. 2026-08-01 04:14 UTCEPSS rescore
  39. 2026-07-30 16:26 UTCEPSS rescore
  40. 2026-07-30 01:29 UTCEPSS rescore
  41. 2026-07-28 15:34 UTCEPSS rescore
  42. 2026-07-28 15:34 UTCEPSS rescore
  43. 2026-07-27 05:39 UTCOSV refresh
  44. 2026-07-26 14:53 UTCEPSS rescore
  45. 2026-07-25 14:16 UTCEPSS rescore
  46. 2026-07-24 14:16 UTCEPSS rescore
  47. 2026-07-23 14:16 UTCEPSS rescore
  48. 2026-07-23 02:29 UTCEG score recompute
  49. 2026-07-22 23:16 UTCEG score recompute
  50. 2026-07-22 14:07 UTCEPSS rescore
  51. 2026-07-22 14:07 UTCEPSS rescore
  52. 2026-07-21 15:23 UTCEPSS rescore
  53. 2026-07-20 17:06 UTCEPSS rescore
  54. 2026-07-19 14:30 UTCEPSS rescore
  55. 2026-07-19 14:29 UTCEPSS rescore
  56. 2026-07-19 02:27 UTCEPSS rescore
  57. 2026-07-19 02:27 UTCEPSS rescore
  58. 2026-07-16 17:01 UTCEPSS rescore
  59. 2026-07-15 16:56 UTCEPSS rescore
  60. 2026-07-15 01:59 UTCEPSS rescore
  61. 2026-07-15 01:59 UTCEPSS rescore
  62. 2026-07-13 06:11 UTCEPSS rescore
  63. 2026-07-12 05:45 UTCEPSS rescore
  64. 2026-07-12 05:45 UTCEPSS rescore
  65. 2026-07-11 08:26 UTCEPSS rescore
  66. 2026-07-10 00:17 UTCOSV refresh
  67. 2026-07-09 19:08 UTCEPSS rescore
  68. 2026-07-08 15:13 UTCEPSS rescore
  69. 2026-07-07 13:45 UTCEPSS rescore
  70. 2026-07-07 13:44 UTCEPSS rescore
  71. 2026-07-06 16:26 UTCEPSS rescore
  72. 2026-07-06 16:26 UTCEPSS rescore
  73. 2026-07-06 02:22 UTCEPSS rescore
  74. 2026-07-06 02:22 UTCEPSS rescore
  75. 2026-07-05 02:29 UTCEPSS rescore

Related CVEs(same product + same vendor)

Frequently asked(5)

What is CVE-2023-53751?
CVE-2023-53751 is a critical vulnerability published on December 8, 2025. In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential use-after-free bugs in TCPServerInfo::hostname TCPServerInfo::hostname may be updated once or many times during reconnect, so protect its access outside reconnect path as well and then prevent any potential…
When was CVE-2023-53751 disclosed?
CVE-2023-53751 was first published in the National Vulnerability Database on December 8, 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-2023-53751 actively exploited?
CVE-2023-53751 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 64.6% of all scored CVEs.
What is the CVSS score of CVE-2023-53751?
CVE-2023-53751 has a CVSS v4.0 base score of 9.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2023-53751?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-53751, 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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