Re: [PATCH 2/3] binfmt_elf: Verify signature of signed elf binary

[Mimi Zohar]

On Tue, 2013-01-15 at 16:34 -0500, Vivek Goyal wrote:
> If a binary is signed, verify its signature. If signature is not valid, do
> not allow execution. If binary is not signed, execution is allowed
> unconditionally.

Basically you're building the policy into the executable.  Anyone can
rebuild the executable and, without signing it, install/replace an
existing one.  How is this safe?  The signature verification policy
needs to be defined independently of the executable.

Mimi

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/