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openSUSE:Evergreen:11.2
avahi
avahi-0.6.25-fixcrash.patch
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File avahi-0.6.25-fixcrash.patch of Package avahi
From cef39a95d31834ab3aac2ea09970ad54d5f5a08b Mon Sep 17 00:00:00 2001 From: Ludwig Nussel <ludwig.nussel@suse.de> Date: Wed, 19 May 2010 15:43:44 +0200 Subject: [PATCH] ignore packet if FIONREAD returns zero zero size is reported for corrupt packets. recvmsg() later could nevertheless get data from a good packet that followed the bad one. So get out early to avoid hitting an assertion. --- avahi-core/socket.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/avahi-core/socket.c b/avahi-core/socket.c index 4146d5a..49238c2 100644 --- a/avahi-core/socket.c +++ b/avahi-core/socket.c @@ -652,6 +652,10 @@ AvahiDnsPacket *avahi_recv_dns_packet_ipv4( goto fail; } + /* corrupt packets have zero size */ + if (!ms) + goto fail; + p = avahi_dns_packet_new(ms + AVAHI_DNS_PACKET_EXTRA_SIZE); io.iov_base = AVAHI_DNS_PACKET_DATA(p); @@ -805,6 +809,10 @@ AvahiDnsPacket *avahi_recv_dns_packet_ipv6( goto fail; } + /* corrupt packets have zero size */ + if (!ms) + goto fail; + p = avahi_dns_packet_new(ms + AVAHI_DNS_PACKET_EXTRA_SIZE); io.iov_base = AVAHI_DNS_PACKET_DATA(p); -- 1.7.1
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