syzbot


KASAN: use-after-free Read in slcan_open
Status: upstream: reported C repro on 2019/12/02 17:05
Reported-by: syzbot+b5ec6fd05ab552a78532@syzkaller.appspotmail.com
Fix commit: slcan: Fix use-after-free Read in slcan_open
Patched on: [], missing on: [ci-qemu-upstream ci-qemu-upstream-386 ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-kmsan-gce ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb]
First crash: 77d, last: 77d

Cause bisection: introduced by (bisect log):

commit 19b7e21c55c81713c4011278143006af9f232504
Author: David S. Miller <davem@davemloft.net>
Date: Sun Nov 17 02:47:31 2019 +0000

  Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Crash: KASAN: use-after-free Read in slcan_open (log)
Repro: C syz .config

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-root 2019/12/01 12:37 upstream 32ef9553 a76bf83f .config log report syz C davem@davemloft.net, linux-can@vger.kernel.org, linux-kernel@vger.kernel.org, mkl@pengutronix.de, netdev@vger.kernel.org, wg@grandegger.com
ci-upstream-kasan-gce-root 2019/12/01 12:10 upstream 32ef9553 a76bf83f .config log report davem@davemloft.net, linux-can@vger.kernel.org, linux-kernel@vger.kernel.org, mkl@pengutronix.de, netdev@vger.kernel.org, wg@grandegger.com