syzbot


KASAN: stack-out-of-bounds Write in __ip_options_echo
Status: fixed on 2019/05/27 12:48
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: 20ff83f10f11 ipv4: add sanity checks in ipv4_link_failure()
First crash: 954d, last: 950d

Cause bisection: introduced by (bisect log) :
commit ed0de45a1008991fdaa27a0152befcb74d126a8b
Author: Stephen Suryaputra <ssuryaextr@gmail.com>
Date: Fri Apr 12 20:19:27 2019 +0000

  ipv4: recompile ip options in ipv4_link_failure

Crash: KASAN: stack-out-of-bounds Write in __ip_options_echo (log)
Repro: syz .config
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 KASAN: stack-out-of-bounds Write in __ip_options_echo 1 945d 945d 0/1 auto-closed as invalid on 2019/10/25 08:39
linux-4.14 KASAN: stack-out-of-bounds Write in __ip_options_echo 1 946d 946d 0/1 auto-closed as invalid on 2019/10/24 16:14

Sample crash report:

Crashes (8):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2019/04/23 18:42 upstream 085b7755808a 53199d6e .config log report syz
ci-upstream-kasan-gce-smack-root 2019/04/20 05:58 upstream 55e3a6ba5cce b0e8efcb .config log report syz
ci-upstream-kasan-gce-root 2019/04/20 04:39 upstream 3ecafda911f4 b0e8efcb .config log report syz
ci-upstream-kasan-gce 2019/04/20 04:11 upstream 3ecafda911f4 b0e8efcb .config log report syz
ci-upstream-net-this-kasan-gce 2019/04/20 04:41 net d1bcf2b65177 b0e8efcb .config log report syz
ci-upstream-net-kasan-gce 2019/04/20 04:42 net-next d7cc399e1227 b0e8efcb .config log report syz
ci-upstream-kasan-gce-root 2019/04/23 14:32 upstream 085b7755808a 53199d6e .config log report
ci-upstream-kasan-gce 2019/04/20 03:30 upstream 3ecafda911f4 b0e8efcb .config log report