syzbot


KASAN: use-after-free Read in leaf_paste_entries
Status: fixed on 2021/01/26 16:42
Reported-by: syzbot+a8a2ffc09ae509f0a7ba@syzkaller.appspotmail.com
Fix commit: b74d5f70523a reiserfs: add check for an invalid ih_entry_count
First crash: 552d, last: 508d

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 (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 KASAN: out-of-bounds Read in leaf_paste_entries C error 12 24d 549d 0/1 upstream: reported C repro on 2020/11/14 23:23
linux-4.19 KASAN: use-after-free Read in leaf_paste_entries C done 1 514d 514d 1/1 fixed on 2021/01/19 18:33
linux-4.14 KASAN: out-of-bounds Read in leaf_paste_entries C error 9 136d 589d 0/1 upstream: reported C repro on 2020/10/05 14:11

Sample crash report:

Crashes (6):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/11/29 16:27 linux-4.14.y 87335852c5d9 a0092f9d .config log report syz C
ci2-linux-4-14 2020/11/25 06:32 linux-4.14.y 87335852c5d9 1a1f4bd8 .config log report syz C
ci2-linux-4-14 2020/12/26 04:14 linux-4.14.y 3f2ecb86cb90 821e0b09 .config log report info
ci2-linux-4-14 2020/12/01 00:13 linux-4.14.y 87335852c5d9 b3a34598 .config log report info
ci2-linux-4-14 2020/11/25 05:03 linux-4.14.y 87335852c5d9 1a1f4bd8 .config log report info
ci2-linux-4-14 2020/11/12 10:47 linux-4.14.y 27ce4f2a6817 77a55c8e .config log report info