syzbot


KASAN: use-after-free Read in n_tty_receive_buf_common
Status: fixed on 2020/04/02 14:59
Reported-by: syzbot+015a0585ad2e44d7786a@syzkaller.appspotmail.com
Fix commit: a4719f6d07b2 vt: selection, push sel_lock up
First crash: 896d, last: 807d

Fix bisection: fixed by (bisect log) :
commit a4719f6d07b2c63223f7452c435c5f578f105cfe
Author: Jiri Slaby <jslaby@suse.cz>
Date: Fri Feb 28 11:54:06 2020 +0000

  vt: selection, push sel_lock up

similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 KASAN: use-after-free Read in n_tty_receive_buf_common C done 40 801d 896d 1/1 fixed on 2020/04/07 16:31
upstream KASAN: use-after-free Read in n_tty_receive_buf_common C done 68 818d 894d 17/22 fixed on 2020/04/15 17:19

Sample crash report:

Crashes (25):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/02/26 21:28 linux-4.14.y 98db2bf27b9e 251aabb7 .config log report syz C
ci2-linux-4-14 2020/02/15 11:16 linux-4.14.y 98db2bf27b9e 5d7b90f1 .config log report syz C
ci2-linux-4-14 2019/12/15 00:43 linux-4.14.y a844dc4c5442 eef6e580 .config log report syz C
ci2-linux-4-14 2019/12/13 11:55 linux-4.14.y a844dc4c5442 2a752b7c .config log report syz C
ci2-linux-4-14 2019/12/13 05:25 linux-4.14.y a844dc4c5442 08003f64 .config log report syz C
ci2-linux-4-14 2019/12/13 04:00 linux-4.14.y a844dc4c5442 08003f64 .config log report syz C
ci2-linux-4-14 2019/12/04 21:55 linux-4.14.y fbc5fe7a54d0 b2088328 .config log report syz C
ci2-linux-4-14 2020/01/02 13:59 linux-4.14.y 4c5bf01e16a7 25a0186e .config log report syz
ci2-linux-4-14 2019/12/30 02:36 linux-4.14.y e1f7d50ae3a3 af6b8ef8 .config log report syz
ci2-linux-4-14 2019/12/15 09:11 linux-4.14.y a844dc4c5442 eef6e580 .config log report syz
ci2-linux-4-14 2019/12/04 11:34 linux-4.14.y fbc5fe7a54d0 0ecb9746 .config log report syz
ci2-linux-4-14 2020/03/02 06:52 linux-4.14.y 78d697fc93f9 4a4e0509 .config log report
ci2-linux-4-14 2020/02/15 12:42 linux-4.14.y 98db2bf27b9e 5d7b90f1 .config log report
ci2-linux-4-14 2020/02/07 03:08 linux-4.14.y e0f8b8a65a47 06150bf1 .config log report
ci2-linux-4-14 2020/01/28 08:22 linux-4.14.y 9a95f25269bd 56cd6c9b .config log report
ci2-linux-4-14 2020/01/12 10:37 linux-4.14.y b0cdffaa546e 31290a45 .config log report
ci2-linux-4-14 2020/01/09 23:21 linux-4.14.y b0cdffaa546e 4de4e9f0 .config log report
ci2-linux-4-14 2019/12/20 14:25 linux-4.14.y bfb9e5c03076 34011c05 .config log report
ci2-linux-4-14 2019/12/18 20:51 linux-4.14.y bfb9e5c03076 79b211f7 .config log report
ci2-linux-4-14 2019/12/14 14:02 linux-4.14.y a844dc4c5442 eef6e580 .config log report
ci2-linux-4-14 2019/12/13 08:51 linux-4.14.y a844dc4c5442 2a752b7c .config log report
ci2-linux-4-14 2019/12/10 10:23 linux-4.14.y a844dc4c5442 4b83c8fb .config log report
ci2-linux-4-14 2019/12/10 01:02 linux-4.14.y a844dc4c5442 b31eda3d .config log report
ci2-linux-4-14 2019/12/08 10:23 linux-4.14.y a844dc4c5442 1508f453 .config log report
ci2-linux-4-14 2019/12/07 00:22 linux-4.14.y a844dc4c5442 85f26751 .config log report