From 5211cc8727ed9701b04976ab47602955e5641bda Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Wed, 21 Jun 2023 15:29:22 -0600 Subject: [PATCH] ksmbd: Use struct_size() helper in ksmbd_negotiate_smb_dialect() Prefer struct_size() over open-coded versions. Link: https://github.com/KSPP/linux/issues/160 Signed-off-by: Gustavo A. R. Silva Reviewed-by: Kees Cook Acked-by: Namjae Jeon Reviewed-by: Sergey Senozhatsky Signed-off-by: Steve French --- fs/smb/server/smb_common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/smb/server/smb_common.c b/fs/smb/server/smb_common.c index a7e8106..b51f431 100644 --- a/fs/smb/server/smb_common.c +++ b/fs/smb/server/smb_common.c @@ -266,7 +266,7 @@ static int ksmbd_negotiate_smb_dialect(void *buf) if (smb2_neg_size > smb_buf_length) goto err_out; - if (smb2_neg_size + le16_to_cpu(req->DialectCount) * sizeof(__le16) > + if (struct_size(req, Dialects, le16_to_cpu(req->DialectCount)) > smb_buf_length) goto err_out; -- 2.7.4