CVE-2026-43377 (GCVE-0-2026-43377)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:21 – Updated: 2026-08-05 12:27
VLAI
Title
ksmbd: Don't log keys in SMB3 signing and encryption key generation
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: Don't log keys in SMB3 signing and encryption key generation When KSMBD_DEBUG_AUTH logging is enabled, generate_smb3signingkey() and generate_smb3encryptionkey() log the session, signing, encryption, and decryption key bytes. Remove the logs to avoid exposing credentials.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7018 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < 4084ed720d7d5f4e975c9e4a6267a552dad3b24a (git)
Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < fec5c70b82af3f59f15bb984df94e5ad1fccfb1e (git)
Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < 3fe2d9ec166b7df9a8df6c0fdcfc210572e27e3f (git)
Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < 407cc37c21d51f9b9d4d20204b04890880cfa6ae (git)
Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < c6b01b997a2094969e315f1ebfc1d64b8ae2163d (git)
Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < 441336115df26b966575de56daf7107ed474faed (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.78 , ≤ 6.12.* (semver)
Unaffected: 6.18.20 , ≤ 6.18.* (semver)
Unaffected: 6.19.9 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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      "source": "Red Hat CSAF VEX",
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      "title": "kernel: ksmbd: Don\u0027t log keys in SMB3 signing and encryption key generation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43377.json",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-43377",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-43377.json",
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}



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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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