From 99ce9a7e60fd12b213b985343ff8fcc172de59fd Mon Sep 17 00:00:00 2001 From: "Dr. David Alan Gilbert" Date: Mon, 3 Feb 2020 13:01:19 +0000 Subject: virtiofsd: do_read missing NULL check MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Missing a NULL check if the argument fetch fails. Fixes: Coverity CID 1413119 Signed-off-by: Dr. David Alan Gilbert Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Stefan Hajnoczi --- tools/virtiofsd/fuse_lowlevel.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/virtiofsd/fuse_lowlevel.c b/tools/virtiofsd/fuse_lowlevel.c index 01c418a..704c036 100644 --- a/tools/virtiofsd/fuse_lowlevel.c +++ b/tools/virtiofsd/fuse_lowlevel.c @@ -1116,6 +1116,10 @@ static void do_read(fuse_req_t req, fuse_ino_t nodeid, struct fuse_file_info fi; arg = fuse_mbuf_iter_advance(iter, sizeof(*arg)); + if (!arg) { + fuse_reply_err(req, EINVAL); + return; + } memset(&fi, 0, sizeof(fi)); fi.fh = arg->fh; -- cgit v1.1