tree bc85523a0965e9c037de4f7164f2623f24dd842f
parent 69f3144bb37bb47da54c68bb9717c284c4f678c5
author Elliott Hughes <enh@google.com> 1479160592 -0800
committer Dirk Vogt <dirk@fairphone.com> 1485378857 +0000

Check for bad packets in getaddrinfo.c's getanswer.

The near duplicate in gethnamaddr.c was already doing so (this fix
is basically copy and pasted from there, but with both copies modified
to avoid skirting undefined behavior).

Bug: http://b/32322088
Test: browser still works

FPIIM-189: Denial of service vulnerability in Bionic DNS CVE-2017-0422 A-32322088

Change-Id: Ied6662be567fb1bddc7ceb138cae1da77fb57976
(cherry picked from commit 27a4459d945e34fabd7166791a5b862ccea83f23)
(cherry picked from commit 87c0dba7b1b1754d69cc92f2b400a311d6393eed)
(cherry picked from commit 2449e7ce14f73acd75986f39b3140652a0d08538)