From: Namjae Jeon <linkinjeon@xxxxxxxxxx>
commit 3ac00a2ab69b34189942afa9e862d5170cdcb018 upstream.
If share is , share->path is NULL and it cause NULL pointer
dereference issue.
Cc: stable@xxxxxxxxxxxxxxx
Reported-by: zdi-disclosures@xxxxxxxxxxxxxx # ZDI-CAN-20479
Signed-off-by: Namjae Jeon <linkinjeon@xxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ksmbd/smb2pdu.c | 3 +++
1 file changed, 3 insertions(+)
--- a/fs/ksmbd/smb2pdu.c
+++ b/fs/ksmbd/smb2pdu.c
@@ -4879,6 +4879,9 @@ static int smb2_get_info_filesystem(stru
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");
