Commit 443d61d1 authored by Chih-Yen Chang's avatar Chih-Yen Chang Committed by Steve French
Browse files

ksmbd: allocate one more byte for implied bcc[0] 



ksmbd_smb2_check_message allows client to return one byte more, so we
need to allocate additional memory in ksmbd_conn_handler_loop to avoid
out-of-bound access.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarChih-Yen Chang <cc85nod@gmail.com>
Acked-by: default avatarNamjae Jeon <linkinjeon@kernel.org>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent f0a96d1a

fs/ksmbd/connection.c

+2 −1
Original line number Diff line number Diff line
@@ -351,7 +351,8 @@ int ksmbd_conn_handler_loop(void *p) 
			break;



		/* 4 for rfc1002 length field */

		size = pdu_size + 4;

		/* 1 for implied bcc[0] */

		size = pdu_size + 4 + 1;

		conn->request_buf = kvmalloc(size, GFP_KERNEL);

		if (!conn->request_buf)

			break;