Vulnerability-Lookup

GHSA-95VC-3RG6-XGP2

Vulnerability from github – Published: 2026-05-08 15:31 – Updated: 2026-05-11 09:30

Details

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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-43377"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-08T15:16:48Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: Don\u0027t log keys in SMB3 signing and encryption key generation\n\nWhen KSMBD_DEBUG_AUTH logging is enabled, generate_smb3signingkey() and\ngenerate_smb3encryptionkey() log the session, signing, encryption, and\ndecryption key bytes. Remove the logs to avoid exposing credentials.",
  "id": "GHSA-95vc-3rg6-xgp2",
  "modified": "2026-05-11T09:30:30Z",
  "published": "2026-05-08T15:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43377"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3fe2d9ec166b7df9a8df6c0fdcfc210572e27e3f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/407cc37c21d51f9b9d4d20204b04890880cfa6ae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4084ed720d7d5f4e975c9e4a6267a552dad3b24a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/441336115df26b966575de56daf7107ed474faed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c6b01b997a2094969e315f1ebfc1d64b8ae2163d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fec5c70b82af3f59f15bb984df94e5ad1fccfb1e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

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

Vulnerability from cvelistv5 – Published: 2026-05-08 14:21 – Updated: 2026-05-11 22:23

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

References

6 references

URL	Tags
https://git.kernel.org/stable/c/4084ed720d7d5f4e9…
https://git.kernel.org/stable/c/fec5c70b82af3f59f…
https://git.kernel.org/stable/c/3fe2d9ec166b7df9a…
https://git.kernel.org/stable/c/407cc37c21d51f9b9…
https://git.kernel.org/stable/c/c6b01b997a2094969…
https://git.kernel.org/stable/c/441336115df26b966…

Impacted products

2 products

Vendor	Product	Version
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)
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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      "affected": [
        {
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          "programFiles": [
            "fs/smb/server/auth.c"
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-95VC-3RG6-XGP2

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

Tags

Sightings

Nomenclature