syzbot


KASAN: use-after-free Read in ip_icmp_error
Status: fixed on 2020/07/17 17:58
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: 23917494 tcp: tcp_v4_err() icmp skb is named icmp_skb
First crash: 389d, last: 389d

Cause bisection: introduced by (bisect log) :
commit 45af29ca761c275e350cca659856bc56f1035ef9
Author: Eric Dumazet <edumazet@google.com>
Date: Sun May 24 18:00:02 2020 +0000

  tcp: allow traceroute -Mtcp for unpriv users

Crash: general protection fault in skb_clone (log)
Repro: C syz .config

Sample crash report:

Crashes (14):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-kasan-gce 2020/05/26 22:47 net-next d52caf04 9072c126 .config log report syz C
ci-upstream-net-kasan-gce 2020/05/26 22:22 net-next d52caf04 9072c126 .config log report syz C
ci-upstream-net-kasan-gce 2020/05/26 21:57 net-next d52caf04 9072c126 .config log report syz C
ci-upstream-net-kasan-gce 2020/05/26 20:55 net-next d52caf04 9072c126 .config log report syz C
ci-upstream-net-kasan-gce 2020/05/26 14:52 net-next d52caf04 8ca3b7d2 .config log report syz C
ci-upstream-net-kasan-gce 2020/05/26 14:18 net-next d52caf04 8ca3b7d2 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/05/27 05:41 linux-next b0523c7b 9072c126 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/05/27 03:09 linux-next b0523c7b 9072c126 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/05/27 02:06 linux-next b0523c7b 9072c126 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/05/27 00:57 linux-next b0523c7b 9072c126 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/05/26 16:24 linux-next b0523c7b 8ca3b7d2 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/05/26 16:06 linux-next b0523c7b 8ca3b7d2 .config log report syz C
ci-upstream-net-kasan-gce 2020/05/26 13:14 net-next d52caf04 8ca3b7d2 .config log report
ci-upstream-net-kasan-gce 2020/05/26 11:33 net-next d52caf04 8ca3b7d2 .config log report