CVE-2026-43377 PUBLISHED

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

Assigner: Linux
Reserved: 01.05.2026 Published: 08.05.2026 Updated: 08.05.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to 4084ed720d7d5f4e975c9e4a6267a552dad3b24a (excl.)
  • affected from e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to fec5c70b82af3f59f15bb984df94e5ad1fccfb1e (excl.)
  • affected from e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to 3fe2d9ec166b7df9a8df6c0fdcfc210572e27e3f (excl.)
  • affected from e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to 407cc37c21d51f9b9d4d20204b04890880cfa6ae (excl.)
  • affected from e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to c6b01b997a2094969e315f1ebfc1d64b8ae2163d (excl.)
  • affected from e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to 441336115df26b966575de56daf7107ed474faed (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 5.15 is affected
  • unaffected from 0 to 5.15 (excl.)
  • unaffected from 6.1.167 to 6.1.* (incl.)
  • unaffected from 6.6.130 to 6.6.* (incl.)
  • unaffected from 6.12.78 to 6.12.* (incl.)
  • unaffected from 6.18.20 to 6.18.* (incl.)
  • unaffected from 6.19.9 to 6.19.* (incl.)
  • unaffected from 7.0 to * (incl.)

References