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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
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)
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Show details on NVD website
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-28T11:39:37+00:00",
      "cve": "CVE-2026-43377",
      "id": "CVE-2026-43377",
      "initial_release_date": "2026-05-08T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "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",
      "version": "3"
    },
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      "aggregate_severity": "important",
      "current_release_date": "2026-08-06T01:20:15Z",
      "cve": "CVE-2026-43377",
      "id": "CVE-2026-43377",
      "initial_release_date": "2026-05-13T03:34:41Z",
      "product_status:known_not_affected": "293",
      "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",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • 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.


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