Messages in this thread Patch in this message | | | From | Tomas Bortoli <> | Subject | [PATCH] 9p: fix NULL pointer dereferences | Date | Thu, 26 Jul 2018 10:10:49 +0200 |
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In p9_fd_create_tcp() and p9_fd_create_unix() it is possible to get a NULL value in the addr parameter. Return -EINVAL in such cases.
Signed-off-by: Tomas Bortoli <tomasbortoli@gmail.com> Reported-by: syzbot+1a262da37d3bead15c39@syzkaller.appspotmail.com --- net/9p/trans_fd.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c index 964260265b13..ecfceb659d0c 100644 --- a/net/9p/trans_fd.c +++ b/net/9p/trans_fd.c @@ -941,6 +941,9 @@ p9_fd_create_tcp(struct p9_client *client, const char *addr, char *args) struct sockaddr_in sin_server; struct p9_fd_opts opts; + if (addr == NULL) + return -EINVAL; + err = parse_opts(args, &opts); if (err < 0) return err; @@ -995,6 +998,9 @@ p9_fd_create_unix(struct p9_client *client, const char *addr, char *args) csocket = NULL; + if (addr == NULL) + return -EINVAL; + if (strlen(addr) >= UNIX_PATH_MAX) { pr_err("%s (%d): address too long: %s\n", __func__, task_pid_nr(current), addr); -- 2.11.0
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