syzbot


KASAN: slab-out-of-bounds Read in vsscanf (2)
Status: upstream: reported C repro on 2020/07/22 18:32
Reported-by: syzbot+a22c6092d003d6fe1122@syzkaller.appspotmail.com
Fix commit: a6bd4f6d Smack: fix another vsscanf out of bounds
Patched on: [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-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu-upstream ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 22d, last: 6d13h

Cause bisection: failed (bisect log)
similar bugs (1):
Kernel Title Repro Bisected Count Last Reported Patched Status
upstream KASAN: slab-out-of-bounds Read in vsscanf C cause 61 34d 137d 17/17 fixed on 2020/07/17 17:58
Patch testing requests:
Created Duration User Patch Repo Result
2020/07/25 11:31 16m bkkarthik@pesu.pes.edu patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master OK

Sample crash report:

Crashes (5):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-smack-root 2020/07/19 20:54 upstream f932d58a 9c812472 .config log report syz C casey@schaufler-ca.com, jmorris@namei.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, serge@hallyn.com
ci-upstream-kasan-gce-smack-root 2020/08/05 05:54 upstream c0842fbc 80a06902 .config log report casey@schaufler-ca.com, jmorris@namei.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, serge@hallyn.com
ci-upstream-kasan-gce-smack-root 2020/07/31 21:49 upstream d8b9faec d895b3be .config log report casey@schaufler-ca.com, jmorris@namei.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, serge@hallyn.com
ci-upstream-kasan-gce-smack-root 2020/07/31 13:03 upstream 83bdc727 8df85ed9 .config log report casey@schaufler-ca.com, jmorris@namei.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, serge@hallyn.com
ci-upstream-kasan-gce-smack-root 2020/07/19 20:44 upstream f932d58a 9c812472 .config log report casey@schaufler-ca.com, jmorris@namei.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, serge@hallyn.com