CVE-2023-3865

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2025-08-16. NVD baseline CVSS 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.1Exploit: None knownExposed: 0

A fix is available — apply it.

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

ksmbd: fix out-of-bound read in smb2_write

ksmbd_smb2_check_message doesn't validate hdr->NextCommand. If ->NextCommand is bigger than Offset + Length of smb2 write, It will allow oversized smb2 write length. It will cause OOB read in smb2_write.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity71% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
47%
KEV
Not listed

Published

August 16, 2025

Last Modified

August 15, 2026

Advisory Details (4)

Auto-updated Aug 15, 2026
No patch confirmed yet.
generic

ksmbd: fix out-of-bound read in smb2_write - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5fe7f7b78290638806211046a99f031ff26164e1
generic

ksmbd: fix out-of-bound read in smb2_write - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/58a9c41064df27632e780c5a3ae3e0e4284957d1
generic

ksmbd: fix out-of-bound read in smb2_write - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c86211159bc3178b891e0d60e586a32c7b6a231b
generic

ksmbd: fix out-of-bound read in smb2_write - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3813eee5154d6a4c5875cb4444cb2b63bac8947f

Patch Availability(9)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.86.83) @ jammy2026-05-30ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.86.96~20.04.44) @ focal2026-05-30ubuntu
ubuntulinux-tools-intel-iotg (5.15.0.1043.43) @ jammy2026-05-30ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1040.38) @ jammy2026-05-30ubuntu
ubuntulinux-tools-intel-iotg-edge (5.15.0.1043.49~20.04.33) @ focal2026-05-30ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.2.0.36.36) @ lunar2026-05-30ubuntu
ubuntulinux-tools-nvidia-hwe-22.04-edge (6.2.0.1011.13) @ jammy2026-05-30ubuntu
ubuntulinux-tools-starfive (6.2.0.1009.10~22.04.2) @ jammy2026-05-30ubuntu
linuxKernel @ 5.15.121—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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.27-16.1.37-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.3.11-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.3.11-1—

Weakness Classification(1)

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

All Vendor Advisories

(8)

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 6× 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 177 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2023-3865?
CVE-2023-3865 is a high vulnerability published on August 16, 2025. In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out-of-bound read in smb2_write ksmbdsmb2check_message doesn't validate hdr->NextCommand. If ->NextCommand is bigger than Offset + Length of smb2 write, It will allow oversized smb2 write length. It will cause OOB read…
When was CVE-2023-3865 disclosed?
CVE-2023-3865 was first published in the National Vulnerability Database on August 16, 2025, with the most recent update on August 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-3865 actively exploited?
CVE-2023-3865 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 52.5% of all scored CVEs.
What is the CVSS score of CVE-2023-3865?
CVE-2023-3865 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2023-3865?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-3865, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-3865

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