syzbot


KASAN: slab-out-of-bounds Write in default_read_copy_kernel
Status: fixed on 2019/06/24 23:41
Reported-by: syzbot+12f17c177de05efea72d@syzkaller.appspotmail.com
Fix commit: ca0214ee2802 ALSA: pcm: Fix possible OOB access in PCM oss plugins
First crash: 1095d, last: 1015d

Cause bisection: introduced by (bisect log) :
commit 65766ee0bf7fe8b3be80e2e1c3ef54ad59b29476
Author: Takashi Iwai <tiwai@suse.de>
Date: Fri Nov 9 10:59:45 2018 +0000

  ALSA: oss: Use kvzalloc() for local buffer allocations

Crash: KASAN: slab-out-of-bounds Write in default_read_copy_kernel (log)
Repro: C syz .config
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 KASAN: slab-out-of-bounds Write in default_read_copy_kernel syz error 2 750d 750d 0/1 upstream: reported syz repro on 2019/11/16 22:53

Sample crash report:

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2018/12/07 07:38 upstream abb8d6ecbd8f dcf836b1 .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/02/24 15:38 upstream e60b5f79bd75 7a06e792 .config log report
ci-upstream-kasan-gce 2018/12/07 06:36 upstream abb8d6ecbd8f dcf836b1 .config log report