On 07/11/2014 09:11 AM, Paul Moore wrote: > On Thursday, July 10, 2014 09:06:02 PM H. Peter Anvin wrote: >> Incidentally: do seccomp users know that on an x86-64 system you can >> recevie system calls from any of the x86 architectures, regardless of >> how the program is invoked? (This is unusual, so normally denying those >> "alien" calls is the right thing to do.) > > I obviously can't speak for all seccomp users, but libseccomp handles this by > checking the seccomp_data->arch value at the start of the filter and killing > (by default) any non-native architectures. If you want, you can change this > default behavior or add support for other architectures (e.g. create a filter > that allows both x86-64 and x32 but disallows x86, or any combination of the > three for that matter). >
OK, that seems reasonable. -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/