Re: ARM audit, seccomp, etc are broken wrt OABI syscalls

From: Kees Cook
Date: Thu Nov 07 2013 - 12:54:21 EST

On Thu, Nov 7, 2013 at 4:55 AM, Henrique de Moraes Holschuh
<hmh@xxxxxxxxxx> wrote:
> On Tue, 05 Nov 2013, Andy Lutomirski wrote:
>> Maybe the thing to do is to put a warning in the config text for
>> CONFIG_OABI_COMPAT that describes the problems (malicious userspace
>> can confuse syscall auditors, strace, etc.), change the "if in doubt"
>> part to N, and disable seccomp filters if CONFIG_OABI_COMPAT. That
>> might even get Debian to change their default.
> Bug reported to the Debian BTS: #728975

FWIW, Ubuntu has also now disabled OABI_COMPAT going forward:


Kees Cook
Chrome OS Security
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