From cb58341c27c8a28f43245e2846360226a0605b14 Mon Sep 17 00:00:00 2001 From: Evgeny Vereshchagin Date: Wed, 24 May 2017 08:56:48 +0300 Subject: [PATCH] resolved: bugfix of null pointer p->question dereferencing (#6020) See https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1621396 (cherry picked from commit a924f43f30f9c4acaf70618dd2a055f8b0f166be) --- src/resolve/resolved-dns-packet.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/resolve/resolved-dns-packet.c b/src/resolve/resolved-dns-packet.c index 652970284e..240ee448f4 100644 --- a/src/resolve/resolved-dns-packet.c +++ b/src/resolve/resolved-dns-packet.c @@ -2269,6 +2269,9 @@ int dns_packet_is_reply_for(DnsPacket *p, const DnsResourceKey *key) { if (r < 0) return r; + if (!p->question) + return 0; + if (p->question->n_keys != 1) return 0;