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]
Date:   Mon, 4 Feb 2019 09:04:11 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     Paul Moore <paul@...l-moore.com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        David Miller <davem@...emloft.net>,
        linux-hams <linux-hams@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        syzbot <syzbot+1bfc00ca3aabe5bcd4cb@...kaller.appspotmail.com>,
        Eric Paris <eparis@...isplace.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Stephen Smalley <sds@...ho.nsa.gov>, selinux@...r.kernel.org,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>
Subject: Re: KASAN: use-after-free Read in selinux_netlbl_socket_setsockopt

On Fri, Feb 1, 2019 at 6:58 PM Cong Wang <xiyou.wangcong@...il.com> wrote:
>
> On Thu, Jan 31, 2019 at 10:56 PM Dmitry Vyukov <dvyukov@...gle.com> wrote:
> > Hi Paul,
> >
> > Searching for af_netrom across other syzbot bugs:
> > https://groups.google.com/forum/#!searchin/syzkaller-bugs/af_netrom%7Csort:date
> >
> > I see at least:
> > https://syzkaller.appspot.com/bug?extid=b0b1952f5864b4009b09
> > https://syzkaller.appspot.com/bug?extid=febf3c50d4262e578b1c
> > https://syzkaller.appspot.com/bug?extid=defa700d16f1bd1b9a05
> >
> > Which suggests there are some serious lifetime problems in netrom
> > sockets. That would probably explain this crash as well.
>
> This is supposed to be fixed by:
> https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=63346650c1a94a92be61a57416ac88c0a47c4327
>
> Please let me know if it isn't.

syzbot can tell if it's not fixed, but for that we need to mark these
bugs as fixed, otherwise syzbot will just consider any new crashes as
the same old bug so nothing to notify about.

#syz fix: netrom: switch to sock timer API

Powered by blists - more mailing lists