diff mbox

[iproute,v4,4/4] tipc/bearer: Prevent NULL pointer dereference

Message ID 20170824094634.4093-5-phil@nwl.cc
State Accepted, archived
Delegated to: stephen hemminger
Headers show

Commit Message

Phil Sutter Aug. 24, 2017, 9:46 a.m. UTC 
Signed-off-by: Phil Sutter <phil@nwl.cc>
---
Changes since v2:
- Keep assignment and check in separate statements.
---
 tipc/bearer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/tipc/bearer.c b/tipc/bearer.c
index c3d4491f8f6ef..0d84570150624 100644
--- a/tipc/bearer.c
+++ b/tipc/bearer.c
@@ -439,7 +439,7 @@  static int cmd_bearer_enable(struct nlmsghdr *nlh, const struct cmd *cmd,
 		return err;
 
 	opt = get_opt(opts, "media");
-	if (strcmp(opt->val, "udp") == 0) {
+	if (opt && strcmp(opt->val, "udp") == 0) {
 		err = nl_add_udp_enable_opts(nlh, opts, cmdl);
 		if (err)
 			return err;