From: Namjae Jeon linkinjeon@kernel.org
commit 3ac00a2ab69b34189942afa9e862d5170cdcb018 upstream.
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: Namjae Jeon linkinjeon@kernel.org Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/ksmbd/smb2pdu.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/fs/ksmbd/smb2pdu.c +++ b/fs/ksmbd/smb2pdu.c @@ -4908,6 +4908,9 @@ 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");