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authorMarios Makassikis <mmakassikis@freebox.fr>2023-01-11 17:39:02 +0100
committerSteve French <stfrench@microsoft.com>2023-01-20 22:27:49 +0100
commit5fde3c21cf33830eda7bfd006dc7f4bf07ec9fe6 (patch)
tree3d5df6cbe09ef210d9197ce71773aa4e908a0d6e /fs/mount.h
parentksmbd: add max connections parameter (diff)
downloadlinux-5fde3c21cf33830eda7bfd006dc7f4bf07ec9fe6.tar.xz
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ksmbd: do not sign response to session request for guest login
If ksmbd.mountd is configured to assign unknown users to the guest account ("map to guest = bad user" in the config), ksmbd signs the response. This is wrong according to MS-SMB2 3.3.5.5.3: 12. If the SMB2_SESSION_FLAG_IS_GUEST bit is not set in the SessionFlags field, and Session.IsAnonymous is FALSE, the server MUST sign the final session setup response before sending it to the client, as follows: [...] This fixes libsmb2 based applications failing to establish a session ("Wrong signature in received"). Fixes: e2f34481b24d ("cifsd: add server-side procedures for SMB3") Cc: stable@vger.kernel.org Signed-off-by: Marios Makassikis <mmakassikis@freebox.fr> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/mount.h')
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