netdev - Re: KASAN: slab-out-of-bounds Read in bpf_csum

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <3b5752b9-8a84-f053-93db-49ddcf4f02e7@iogearbox.net>
Date:   Fri, 8 Jun 2018 11:53:53 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     syzbot <syzbot+efae31b384d5badbd620@...kaller.appspotmail.com>,
        ast@...nel.org, davem@...emloft.net, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: KASAN: slab-out-of-bounds Read in bpf_csum_update

On 06/04/2018 01:36 AM, syzbot wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    0512e0134582 Merge tag 'xfs-4.17-fixes-3' of git://git.ker..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=17eb2d7b800000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=968b0b23c7854c0b
> dashboard link: https://syzkaller.appspot.com/bug?extid=efae31b384d5badbd620
> compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
> syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=162c6def800000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14fe3db7800000

#syz fix: bpf: reject passing modified ctx to helper functions