syzbot


KASAN: use-after-free Read in ip6_dst_destroy
Status: fixed on 2020/04/15 17:19
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: 44bfa9c5e5f0 net: rtnetlink: fix bugs in rtnl_alt_ifname()
First crash: 658d, last: 658d

Cause bisection: introduced by (bisect log) :
commit 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc
Author: Jiri Pirko <jiri@mellanox.com>
Date: Mon Sep 30 09:48:16 2019 +0000

  net: rtnetlink: add linkprop commands to add and delete alternative ifnames

Crash: KASAN: use-after-free Read in find_match (log)
Repro: C syz .config

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-386 2020/02/16 00:21 upstream 829e69446995 5d7b90f1 .config log report syz C