From 74e7072f63b2f04cb65b64abfe5ca49695f0166e Mon Sep 17 00:00:00 2001 From: Oliver Smith Date: Mon, 13 Jan 2020 15:51:56 +0100 Subject: mdns_rfc.c: fix possible access of uninit. mem Fixes: CID#207548 Change-Id: Ifa269d8a88d84c01349668cdd8d1f1d24c12c6d8 --- src/mslookup/mdns_rfc.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/src/mslookup/mdns_rfc.c b/src/mslookup/mdns_rfc.c index e1fc184..6f39a8e 100644 --- a/src/mslookup/mdns_rfc.c +++ b/src/mslookup/mdns_rfc.c @@ -83,7 +83,12 @@ char *osmo_mdns_rfc_qname_decode(void *ctx, const char *qname, size_t qname_max_ return NULL; while (*qname) { - size_t len = *qname; + size_t len; + + if (i >= qname_max_len) + return NULL; + + len = *qname; next_label = qname + len + 1; if (next_label >= qname_end || i + len > OSMO_MDNS_RFC_MAX_NAME_LEN) -- cgit v1.2.3