CVE-2026-90169
Description
AI Translation Available
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: free preauth sessions on connection teardown
SMB3.1.1 multichannel binding preserves the preauthentication hash in a
preauth_session between the NTLM negotiate and authenticate requests.
The binding NTLM negotiate allocates this object and returns
STATUS_MORE_PROCESSING_REQUIRED. If the client disconnects before it sends
the authenticate request, neither the authenticate nor error cleanup paths
free the object.
Release any remaining preauthentication sessions when tearing down the
connection. Initialize the list when allocating the connection so that this
cleanup is safe regardless of the negotiated dialect.
https://git.kernel.org/stable/c/06c7b1d731bc105a8644f1b70165ba8b9416cbab
https://git.kernel.org/stable/c/8e2ebc77678832e981adc008d25cd8f67d08ebc4
https://git.kernel.org/stable/c/a41a98ee16ae038751b6639decadaa3ce15ca18a
https://git.kernel.org/stable/c/b62b1ebb25f0a19067ed5b1a86036b2dc98be44f
https://git.kernel.org/stable/c/effcf48d79d8aa53113d8289e140746f25ceb62c