syzbot


KASAN: use-after-free Read in search_by_entry_key
Status: fixed on 2021/02/21 17:18
Reported-by: syzbot+c78d28ac5472f784e38b@syzkaller.appspotmail.com
Fix commit: b74d5f70523a reiserfs: add check for an invalid ih_entry_count
First crash: 603d, last: 497d

Fix bisection: fixed by (bisect log) :
commit b74d5f70523a819aac71e0eee4f4b530e69e463a
Author: Rustam Kovhaev <rkovhaev@gmail.com>
Date: Sun Nov 1 14:09:58 2020 +0000

  reiserfs: add check for an invalid ih_entry_count

similar bugs (4):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 KASAN: use-after-free Read in search_by_entry_key (2) C 1 5d15h 397d 0/1 upstream: reported C repro on 2021/04/16 06:17
linux-4.19 KASAN: use-after-free Read in search_by_entry_key C done 1 498d 588d 1/1 fixed on 2021/02/20 09:47
upstream KASAN: use-after-free Read in search_by_entry_key C done 3 583d 586d 21/22 fixed on 2021/03/10 01:49
linux-4.19 KASAN: use-after-free Read in search_by_entry_key (2) C done 2 279d 429d 1/1 fixed on 2021/09/10 21:17

Sample crash report:

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/09/26 18:15 linux-4.14.y cbfa1702aaf6 2d5ea0cb .config log report syz C
ci2-linux-4-14 2020/09/22 02:21 linux-4.14.y cbfa1702aaf6 9e1fa68e .config log report syz C
ci2-linux-4-14 2020/12/07 05:02 linux-4.14.y c196b3a9c83a c521566d .config log report info