Messages in this thread Patch in this message | | | From | Christophe JAILLET <> | Subject | [PATCH] ksmbd: Fix an error handling path in 'smb2_sess_setup()' | Date | Sun, 7 Nov 2021 16:22:57 +0100 |
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All the error handling paths of 'smb2_sess_setup()' end to 'out_err'.
All but the new error handling path added by the commit given in the Fixes tag below.
Fix this error handling path and branch to 'out_err' as well.
Fixes: 0d994cd482ee ("ksmbd: add buffer validation in session setup") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> --- fs/ksmbd/smb2pdu.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c index ba68a27cabf8..bb0d1b155b34 100644 --- a/fs/ksmbd/smb2pdu.c +++ b/fs/ksmbd/smb2pdu.c @@ -1698,8 +1698,10 @@ int smb2_sess_setup(struct ksmbd_work *work) negblob_off = le16_to_cpu(req->SecurityBufferOffset); negblob_len = le16_to_cpu(req->SecurityBufferLength); if (negblob_off < offsetof(struct smb2_sess_setup_req, Buffer) || - negblob_len < offsetof(struct negotiate_message, NegotiateFlags)) - return -EINVAL; + negblob_len < offsetof(struct negotiate_message, NegotiateFlags)) { + rc = -EINVAL; + goto out_err; + } negblob = (struct negotiate_message *)((char *)&req->hdr.ProtocolId + negblob_off); -- 2.30.2
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