On Wed, Apr 4, 2018 at 6:17 PM, David Howells <dhowe...@redhat.com> wrote:
> Andy Lutomirski <l...@kernel.org> wrote:
>> 3. All the bpf and tracing stuf, etc, gets changed so it only takes
> Uh, no.  bpf, for example, can be used to modify kernel memory.

I'm pretty sure bpf isn't supposed to be able to modify arbitrary
kernel memory. AFAIU if you can use BPF to write to arbitrary kernel
memory, that's a bug; with CAP_SYS_ADMIN, you can read from userspace,
write to userspace, and read from kernelspace, but you shouldn't be
able to write to kernelspace.
To unsubscribe from this list: send the line "unsubscribe linux-efi" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Reply via email to