syzbot


KASAN: use-after-free Read in tipc_udp_nl_dump_remoteip (2)
Status: upstream: reported C repro on 2020/06/22 16:37
Reported-by: syzbot+3039ddf6d7b13daf3787@syzkaller.appspotmail.com
Fix commit: genetlink: get rid of family->attrbuf
Patched on: [ci-upstream-bpf-kasan-gce ci-upstream-linux-next-kasan-gce-root ci-upstream-net-this-kasan-gce], missing on: [ci-qemu-upstream ci-qemu-upstream-386 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-net-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb]
First crash: 12d, last: 5d10h
similar bugs (1):
Kernel Title Repro Bisected Count Last Reported Patched Status
upstream KASAN: use-after-free Read in tipc_udp_nl_dump_remoteip C cause 3 270d 271d 16/17 fixed on 2019/12/13 00:31
Patch testing requests:
Created Duration User Patch Repo Result
2020/06/26 23:44 17m xiyou.wangcong@gmail.com https://github.com/congwang/linux.git net OK
2020/06/25 02:28 11m xiyou.wangcong@gmail.com https://github.com/congwang/linux.git net report log

Sample crash report:

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-net-this-kasan-gce 2020/06/22 02:25 net 67c20de3 4f2acff9 .config log report syz C davem@davemloft.net, jmaloy@redhat.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, tipc-discussion@lists.sourceforge.net, ying.xue@windriver.com
ci-upstream-kasan-gce-smack-root 2020/06/26 13:54 upstream 4a21185c aea82c00 .config log report davem@davemloft.net, jmaloy@redhat.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, tipc-discussion@lists.sourceforge.net, ying.xue@windriver.com
ci-upstream-net-this-kasan-gce 2020/06/22 02:11 net 67c20de3 4f2acff9 .config log report davem@davemloft.net, jmaloy@redhat.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, tipc-discussion@lists.sourceforge.net, ying.xue@windriver.com
ci-upstream-net-kasan-gce 2020/06/29 11:05 net-next b08866f4 a2cdad9d .config log report davem@davemloft.net, jmaloy@redhat.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, tipc-discussion@lists.sourceforge.net, ying.xue@windriver.com