syzbot


KASAN: use-after-free Read in sock_def_write_space
Status: fixed on 2020/07/20 08:03
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: a9b111016235 llc: make sure applications use ARPHRD_ETHER
First crash: 872d, last: 507d

Cause bisection: introduced by (bisect log) :
commit 31c03aef9bc22a64a8324d650ca4198819ef3a33
Author: Willem de Bruijn <willemb@google.com>
Date: Thu Jun 13 16:24:57 2019 +0000

  virtio_net: enable napi_tx by default

Crash: KASAN: use-after-free Read in sock_def_write_space (log)
Repro: syz .config
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: use-after-free Read in sock_def_write_space (3) 21 202d 439d 0/22 auto-closed as invalid on 2021/08/18 10:16
upstream KASAN: use-after-free Read in sock_def_write_space (2) C error 29 448d 506d 17/22 fixed on 2020/09/16 22:51

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2019/11/12 00:28 upstream 72d5ac679e24 6affd8e8 .config log report syz
ci-upstream-kasan-gce-selinux-root 2019/10/03 06:14 upstream dcb8cfbd8fe9 6affd8e8 .config log report syz
ci-upstream-kasan-gce-selinux-root 2019/09/03 05:41 upstream dcb8cfbd8fe9 6affd8e8 .config log report syz
Crashes (67):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2020/07/17 03:34 upstream f8456690ba8e 54b3c45e .config log report syz C
ci-upstream-kasan-gce 2020/07/16 11:07 upstream 994e99a96c9b f3bec699 .config log report syz C
ci-upstream-kasan-gce-386 2020/07/16 10:14 upstream 994e99a96c9b f3bec699 .config log report syz C
ci-qemu-upstream-386 2020/06/14 22:19 upstream 435faf5c218a 2a22c77a .config log report syz C
ci-qemu-upstream-386 2019/12/16 02:23 upstream 510c9788991c eef6e580 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/08/04 05:07 upstream dcb8cfbd8fe9 6affd8e8 .config log report syz
ci-upstream-kasan-gce 2020/07/18 07:37 upstream 8882572675c1 9c812472 .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/18 03:52 upstream 8882572675c1 9c812472 .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/17 00:22 upstream f8456690ba8e 54b3c45e .config log report
ci-upstream-kasan-gce 2020/07/16 23:24 upstream f8456690ba8e 54b3c45e .config log report
ci-upstream-kasan-gce-root 2020/07/15 03:23 upstream e9919e11e219 609fb517 .config log report
ci-upstream-kasan-gce 2020/07/12 02:29 upstream a581387e415b 18d18b59 .config log report
ci-upstream-kasan-gce-root 2020/07/03 09:51 upstream cd77006e01b3 bed10395 .config log report
ci-upstream-kasan-gce 2020/06/30 20:38 upstream 9ebcfadb0610 917afeaa .config log report
ci-upstream-kasan-gce-smack-root 2020/06/30 02:08 upstream 4e99b32169e8 a2cdad9d .config log report
ci-upstream-kasan-gce-smack-root 2020/06/29 06:07 upstream 4e99b32169e8 a2cdad9d .config log report
ci-upstream-kasan-gce 2020/06/28 02:59 upstream 1590a2e1c681 ffec44b5 .config log report
ci-upstream-kasan-gce 2020/06/27 05:11 upstream 1590a2e1c681 ffec44b5 .config log report
ci-upstream-kasan-gce-root 2020/06/25 11:28 upstream 7ae77150d94d 54566aff .config log report
ci-upstream-kasan-gce 2020/06/25 06:39 upstream 7ae77150d94d 54566aff .config log report
ci-qemu-upstream 2020/06/12 20:36 upstream 435faf5c218a d1c1c849 .config log report
ci-upstream-kasan-gce-smack-root 2020/05/22 15:32 upstream 051143e1602d 9682898d .config log report
ci-qemu-upstream 2020/05/18 22:40 upstream 642b151f45dd 684d3606 .config log report
ci-qemu-upstream 2020/05/12 18:36 upstream 152036d1379f a44eb8f7 .config log report
ci-qemu-upstream 2020/05/12 07:26 upstream 152036d1379f 44aa8310 .config log report
ci-qemu-upstream 2020/04/16 05:45 upstream 00086336a8d9 c743fcb3 .config log report
ci-upstream-kasan-gce-root 2020/04/10 23:05 upstream c0cc271173b2 a8c6a3f8 .config log report
ci-qemu-upstream 2020/01/24 05:44 upstream 4703d9119972 2e95ab33 .config log report
ci-qemu-upstream 2019/12/22 11:26 upstream b8e382a185eb 8b967267 .config log report
ci-qemu-upstream 2019/12/21 11:28 upstream f1fd1610cbb6 bc586918 .config log report
ci-qemu-upstream 2019/12/20 18:40 upstream 6398b9fc818e aa56acc6 .config log report
ci-qemu-upstream 2019/12/17 10:57 upstream ea200dec5128 2b31345f .config log report
ci-qemu-upstream 2019/12/14 03:03 upstream e31736d9fae8 eef6e580 .config log report
ci-upstream-kasan-gce-selinux-root 2019/08/04 02:04 upstream dcb8cfbd8fe9 6affd8e8 .config log report
ci-upstream-kasan-gce-root 2019/08/03 12:18 upstream 755f1fed27f4 6affd8e8 .config log report
ci-upstream-kasan-gce-root 2019/07/31 21:07 upstream 4010b622f1d2 c692b5bd .config log report
ci-upstream-kasan-gce-386 2020/07/13 16:54 upstream 11ba468877bb f90ec899 .config log report
ci-upstream-kasan-gce-386 2020/07/09 04:41 upstream 0bddd227f3dc bc238812 .config log report
ci-upstream-kasan-gce-386 2020/07/07 20:49 upstream 7cc2a8ea1048 51095195 .config log report
ci-upstream-kasan-gce-386 2020/07/04 16:57 upstream 7cc2a8ea1048 51095195 .config log report
ci-upstream-kasan-gce-386 2020/07/03 07:26 upstream cd77006e01b3 bed10395 .config log report
ci-upstream-kasan-gce-386 2020/06/25 00:00 upstream 7ae77150d94d 54566aff .config log report
ci-qemu-upstream-386 2020/03/22 07:33 upstream b74b991fb8b9 78267cec .config log report
ci-qemu-upstream-386 2020/03/19 17:49 upstream cd607737f3b8 2c31c529 .config log report
ci-qemu-upstream-386 2020/02/18 22:24 upstream b1da3acc781c 135c18aa .config log report
ci-qemu-upstream-386 2020/01/28 19:25 upstream c677124e631d c8e81ce4 .config log report
ci-qemu-upstream-386 2019/12/15 11:48 upstream 510c9788991c eef6e580 .config log report
ci-qemu-upstream-386 2019/12/14 02:57 upstream e31736d9fae8 eef6e580 .config log report
ci-upstream-net-this-kasan-gce 2020/07/15 07:34 net d113c0f2e0d2 609fb517 .config log report
ci-upstream-net-this-kasan-gce 2020/05/13 23:11 net 99addbe31f55 a885920d .config log report
ci-upstream-net-this-kasan-gce 2020/02/01 07:10 net 9f68e3655aae c30117b2 .config log report
ci-upstream-net-this-kasan-gce 2020/01/30 20:35 net ccd1f27368e4 5ed23f9a .config log report
ci-upstream-net-this-kasan-gce 2019/12/10 09:40 net 991a34593bad 4b83c8fb .config log report
ci-upstream-net-this-kasan-gce 2019/10/12 14:57 net 82ad862115c2 426631dd .config log report
ci-upstream-net-this-kasan-gce 2019/07/21 21:54 net 1a03bb532934 1656845f .config log report
ci-upstream-net-kasan-gce 2020/07/15 06:23 net-next 07dd1b7e68e4 609fb517 .config log report
ci-upstream-net-kasan-gce 2020/07/06 12:33 net-next e44f65fd666c 51095195 .config log report
ci-upstream-net-kasan-gce 2020/06/02 07:40 net-next 9a25c1df24a6 a0331e89 .config log report
ci-upstream-net-kasan-gce 2019/07/20 17:37 net-next 31cc088a4f5d 1656845f .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/20 00:17 linux-next 4c43049f19a2 9c812472 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/19 19:34 linux-next 4c43049f19a2 9c812472 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/17 18:25 linux-next 4c43049f19a2 9c812472 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/16 08:25 linux-next ca0e494af5ed f3bec699 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/07/22 15:51 linux-next 6d21a41b7b1f b3c615f5 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/07/21 19:37 linux-next 6d21a41b7b1f 1656845f .config log report