Commit 3ac00a2a authored by Namjae Jeon's avatar Namjae Jeon Committed by Steve French
Browse files

ksmbd: fix NULL pointer dereference in smb2_get_info_filesystem() 



If share is , share->path is NULL and it cause NULL pointer
dereference issue.

Cc: stable@vger.kernel.org
Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-20479
Signed-off-by: default avatarNamjae Jeon <linkinjeon@kernel.org>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent 6d7cb549

fs/ksmbd/smb2pdu.c

+3 −0
Original line number Diff line number Diff line
@@ -4885,6 +4885,9 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work, 
	int rc = 0, len;

	int fs_infoclass_size = 0;



	if (!share->path)

		return -EIO;



	rc = kern_path(share->path, LOOKUP_NO_SYMLINKS, &path);

	if (rc) {

		pr_err("cannot create vfs path\n");