CVE-2026-43377

ksmbd: Don't log keys in SMB3 signing and encryption key generation

State: Published
Severity: 8.1 High
Published: May 8, 2026
Updated: Aug 5, 2026
Reserved: May 1, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to before 4084ed720d7d5f4e975c9e4a6267a552dad3b24aAffected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to before fec5c70b82af3f59f15bb984df94e5ad1fccfb1eAffected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to before 3fe2d9ec166b7df9a8df6c0fdcfc210572e27e3fAffected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to before 407cc37c21d51f9b9d4d20204b04890880cfa6aeAffected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to before c6b01b997a2094969e315f1ebfc1d64b8ae2163dAffected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to before 441336115df26b966575de56daf7107ed474faedAffected
LinuxLinux	5.15Affected before 5.15Not affected 6.1.167 through 6.1.Not affected 6.6.130 through 6.6.Not affected 6.12.78 through 6.12.Not affected 6.18.20 through 6.18.Not affected 6.19.9 through 6.19.*Not affected 7.0 and laterNot affected

Product

Versions

LinuxLinux

e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to before 4084ed720d7d5f4e975c9e4a6267a552dad3b24aAffected
e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to before fec5c70b82af3f59f15bb984df94e5ad1fccfb1eAffected
e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to before 3fe2d9ec166b7df9a8df6c0fdcfc210572e27e3fAffected
e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to before 407cc37c21d51f9b9d4d20204b04890880cfa6aeAffected
e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to before c6b01b997a2094969e315f1ebfc1d64b8ae2163dAffected
e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to before 441336115df26b966575de56daf7107ed474faedAffected

LinuxLinux

5.15Affected
before 5.15Not affected
6.1.167 through 6.1.*Not affected
6.6.130 through 6.6.*Not affected
6.12.78 through 6.12.*Not affected
6.18.20 through 6.18.*Not affected
6.19.9 through 6.19.*Not affected
7.0 and laterNot affected

References

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