syzbot


KASAN: use-after-free Read in __fput
Status: fixed on 2020/10/03 03:32
Reported-by: syzbot+b65d1d9e4b6cccde9bca@syzkaller.appspotmail.com
Fix commit: 37d933e8b41b fix regression in "epoll: Keep a reference on files added to the check list"
First crash: 457d, last: 457d

Fix bisection: fixed by (bisect log) :
commit 37d933e8b41b83bb8278815e366aec5a542b7e31
Author: Al Viro <viro@zeniv.linux.org.uk>
Date: Wed Sep 2 15:30:48 2020 +0000

  fix regression in "epoll: Keep a reference on files added to the check list"

similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: use-after-free Read in __fput 23 1458d 1492d 4/22 fixed on 2018/02/13 04:59
upstream KASAN: use-after-free Read in __fput (2) 1 1332d 1324d 0/22 auto-closed as invalid on 2019/02/22 10:26
upstream KASAN: use-after-free Read in __fput (3) syz done unreliable 1 462d 458d 0/22 upstream: reported syz repro on 2020/08/31 23:08

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-19 2020/09/02 08:42 linux-4.19.y f6d5cb9e2c06 abf9ba4f .config log report syz