syzbot


KASAN: use-after-free Read in vlan_dev_real_dev (2)
Status: upstream: reported C repro on 2021/10/11 17:38
Reported-by: syzbot+e4df4e1389e28972e955@syzkaller.appspotmail.com
Fix commit: 563bcbae3ba2 net: vlan: fix a UAF in vlan_dev_real_dev()
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte 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-kmsan-gce-386 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-qemu2-riscv64]
First crash: 124d, last: 97d

Cause bisection: failed (bisect log)
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: use-after-free Read in vlan_dev_real_dev 6 277d 394d 0/22 auto-closed as invalid on 2021/08/24 06:33
Patch testing requests:
Created Duration User Patch Repo Result
2021/10/18 18:24 10m phind.uet@gmail.com linux-next report log

Sample crash report:

Crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-this-kasan-gce 2021/10/11 17:38 net 732b74d64704 838e7e2c .config log report syz C KASAN: use-after-free Read in vlan_dev_real_dev
ci-upstream-net-kasan-gce 2021/10/11 21:34 net-next ce8bd03c47fc 838e7e2c .config log report syz C KASAN: use-after-free Read in vlan_dev_real_dev
ci-upstream-net-this-kasan-gce 2021/10/11 14:35 net 732b74d64704 838e7e2c .config log report info KASAN: use-after-free Read in vlan_dev_real_dev
ci-upstream-net-this-kasan-gce 2021/09/26 08:33 net 7fe7f3182a0d 8cac236e .config log report info KASAN: use-after-free Read in vlan_dev_real_dev
ci-upstream-net-this-kasan-gce 2021/09/26 03:25 net 7fe7f3182a0d 8cac236e .config log report info KASAN: use-after-free Read in vlan_dev_real_dev
ci-upstream-net-kasan-gce 2021/10/23 01:45 net-next 016c89460d34 282f03fb .config log report info KASAN: use-after-free Read in vlan_dev_real_dev
ci-upstream-net-kasan-gce 2021/10/17 20:53 net-next 4e6e167bc049 0c5d9412 .config log report info KASAN: use-after-free Read in vlan_dev_real_dev