syzbot


KASAN: use-after-free Read in fbcon_cursor
Status: upstream: reported syz repro on 2019/12/15 20:35
Reported-by: syzbot+9116ecc1978ca3a12f43@syzkaller.appspotmail.com
First crash: 234d, last: 2d12h

Cause bisection: the bug happens on the oldest tested release
Crash: KASAN: use-after-free Read in fbcon_putcs (log)
Repro: syz .config

Fix bisection: failed (bisect log)
similar bugs (2):
Kernel Title Repro Bisected Count Last Reported Patched Status
linux-4.14 KASAN: use-after-free Read in fbcon_cursor syz fix 3 58d 234d 0/1 upstream: reported syz repro on 2019/12/15 04:16
linux-4.19 KASAN: use-after-free Read in fbcon_cursor syz 4 5d01h 234d 0/1 upstream: reported syz repro on 2019/12/15 03:47

Sample crash report:

Crashes (8):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-selinux-root 2019/12/15 07:04 upstream 07c4b9e9 eef6e580 .config log report syz b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, sam@ravnborg.org
ci-upstream-kasan-gce-root 2019/12/15 05:47 upstream 07c4b9e9 eef6e580 .config log report syz b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, sam@ravnborg.org
ci-upstream-linux-next-kasan-gce-root 2019/12/25 14:54 linux-next 7ddd09fc be5c2c81 .config log report syz b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, sam@ravnborg.org
ci-upstream-kasan-gce-smack-root 2020/08/03 10:19 upstream 5a30a789 196277c4 .config log report alexander.deucher@amd.com, b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se
ci-upstream-kasan-gce-smack-root 2020/05/14 00:19 upstream 24085f70 a885920d .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, sam@ravnborg.org
ci-upstream-kasan-gce-smack-root 2020/05/03 15:23 upstream f66ed1eb 58ae5e18 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, sam@ravnborg.org
ci-upstream-kasan-gce-selinux-root 2020/04/23 19:42 upstream c578ddb3 2e44d63e .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, sam@ravnborg.org
ci-upstream-linux-next-kasan-gce-root 2020/03/12 05:19 linux-next 770fbb32 e7caca8e .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, sam@ravnborg.org