syzbot


KASAN: use-after-free Read in ntfs_iget
Status: fixed on 2021/03/23 15:18
Reported-by: syzbot+57a1beae03eb5395dea5@syzkaller.appspotmail.com
Fix commit: 49ee014a2070 ntfs: check for valid standard information attribute
First crash: 238d, last: 162d

Fix bisection: fixed by (bisect log) :
commit 49ee014a2070b209fd73ad96a7a36193dcdd149c
Author: Rustam Kovhaev <rkovhaev@gmail.com>
Date: Wed Feb 24 20:00:30 2021 +0000

  ntfs: check for valid standard information attribute

similar bugs (4):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 KASAN: use-after-free Read in ntfs_iget C done 1 158d 218d 1/1 fixed on 2021/03/29 19:17
linux-4.19 KASAN: use-after-free Read in ntfs_iget (2) C done 1 41d 41d 1/1 fixed on 2021/07/22 23:24
upstream KASAN: use-after-free Read in ntfs_iget C error error 1 251d 247d 22/22 fixed on 2021/04/09 19:46
upstream KASAN: use-after-free Read in ntfs_iget (2) C inconclusive 2 59d 56d 19/22 upstream: reported C repro on 2021/06/07 15:55

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/12/07 12:13 linux-4.14.y c196b3a9c83a f80ce148 .config log report syz C
ci2-linux-4-14 2020/12/07 09:39 linux-4.14.y c196b3a9c83a f80ce148 .config log report info