diff mbox

[iproute,v2,2/7] xfrm_state: Make sure alg_name is NULL-terminated

Message ID 20170817170932.24659-3-phil@nwl.cc
State Changes Requested, archived
Delegated to: stephen hemminger
Headers show

Commit Message

Phil Sutter Aug. 17, 2017, 5:09 p.m. UTC 
Signed-off-by: Phil Sutter <phil@nwl.cc>
---
 ip/xfrm_state.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/ip/xfrm_state.c b/ip/xfrm_state.c
index e11c93bf1c3b5..7c0389038986e 100644
--- a/ip/xfrm_state.c
+++ b/ip/xfrm_state.c
@@ -125,7 +125,8 @@  static int xfrm_algo_parse(struct xfrm_algo *alg, enum xfrm_attr_type_t type,
 	fprintf(stderr, "warning: ALGO-NAME/ALGO-KEYMAT values will be sent to the kernel promiscuously! (verifying them isn't implemented yet)\n");
 #endif
 
-	strncpy(alg->alg_name, name, sizeof(alg->alg_name));
+	strncpy(alg->alg_name, name, sizeof(alg->alg_name) - 1);
+	alg->alg_name[sizeof(alg->alg_name) - 1] = '\0';
 
 	if (slen > 2 && strncmp(key, "0x", 2) == 0) {
 		/* split two chars "0x" from the top */