CVE-2023-53358

HIGHNVD 7.07.0—
EchelonGraph scoreMEDIUM confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2025-09-17. NVD baseline CVSS 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.0Exploit: None knownExposed: 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:

ksmbd: fix racy issue under cocurrent smb2 tree disconnect

There is UAF issue under cocurrent smb2 tree disconnect. This patch introduce TREE_CONN_EXPIRE flags for tcon to avoid cocurrent access.

CVSS v3
7.0
EG Score
7.0(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity70% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
28%
KEV
Not listed

Published

September 17, 2025

Last Modified

August 5, 2026

Advisory Details (5)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

ksmbd: fix racy issue under cocurrent smb2 tree disconnect - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/30210947a343b6b3ca13adc9bfc88e1543e16dd5
generic

ksmbd: fix racy issue under cocurrent smb2 tree disconnect - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/39366b47a59d46af15ac57beb0996268bf911f6a
generic

ksmbd: fix racy issue under cocurrent smb2 tree disconnect - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dc1c17716c099c90948ebb83e2170dd75a3be6b6
generic

ksmbd: fix racy issue under cocurrent smb2 tree disconnect - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bd80d35725a0cf4df9307bfe2f1a3b2cb983d8e6
generic

ksmbd: fix racy issue under cocurrent smb2 tree disconnect - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b36295c17fb97424406f0c3ab321b1ccaabb9be8

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 5.15.145—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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 45× 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 108 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2023-53358?
CVE-2023-53358 is a high vulnerability published on September 17, 2025. In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix racy issue under cocurrent smb2 tree disconnect There is UAF issue under cocurrent smb2 tree disconnect. This patch introduce TREECONNEXPIRE flags for tcon to avoid cocurrent access.
When was CVE-2023-53358 disclosed?
CVE-2023-53358 was first published in the National Vulnerability Database on September 17, 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-2023-53358 actively exploited?
CVE-2023-53358 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 72.4% of all scored CVEs.
What is the CVSS score of CVE-2023-53358?
CVE-2023-53358 has a CVSS v3 base score of 7.0 (NVD).
How do I remediate CVE-2023-53358?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-53358, 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.

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