syzbot


KASAN: vmalloc-out-of-bounds Write in lzo_uncompress
Status: fixed on 2021/03/10 01:48
Reported-by: syzbot+6fba78f99b9afd4b5634@syzkaller.appspotmail.com
Fix commit: e812cbbbbbb1 squashfs: avoid out of bounds writes in decompressors
First crash: 326d, last: 300d

Cause bisection: introduced by (bisect log) :
commit 93e72b3c612adcaca13d874fcc86c53e6c8da541
Author: Philippe Liard <pliard@google.com>
Date: Tue Jun 2 04:45:23 2020 +0000

  squashfs: migrate from ll_rw_block usage to BIO

Crash: KASAN: vmalloc-out-of-bounds Write in lzo_uncompress (log)
Repro: C syz .config

Sample crash report:

Crashes (8):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2021/01/12 07:34 upstream a0d54b4f5b21 2c1f2513 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2021/02/07 04:29 linux-next aa2b88209686 0655e081 .config log report info KASAN: vmalloc-out-of-bounds Write in lzo_uncompress
ci-upstream-kasan-gce-smack-root 2021/01/14 07:30 upstream 65f0d2414b70 269d24e8 .config log report info
ci-upstream-kasan-gce-selinux-root 2021/01/14 07:26 upstream 65f0d2414b70 269d24e8 .config log report info
ci-upstream-kasan-gce-smack-root 2021/01/14 07:21 upstream 65f0d2414b70 269d24e8 .config log report info
ci-upstream-kasan-gce-root 2021/01/13 22:47 upstream e609571b5ffa a945f0a3 .config log report info
ci-upstream-kasan-gce-selinux-root 2021/01/12 07:14 upstream a0d54b4f5b21 2c1f2513 .config log report info
ci-upstream-linux-next-kasan-gce-root 2021/01/14 07:21 linux-next aa515cdce7a1 269d24e8 .config log report info