On Feb 23, 2015 8:41 AM, "Christoph Lameter" <cl@xxxxxxxxx> wrote: > > On Mon, 23 Feb 2015, Andy Lutomirski wrote: > > > If you set ambient caps and then run a setuid program (without > > no_new_privs), then the ambient set *must* be cleared by the kernel > > because that's what the setuid program expects. Yes, the whole > > Why would a setuid program expect that? I'd say we expect the ambient set > to remain in effect. What would break if the ambient set would stay > active? > On a total guess: exim, sendmail, sudo, Apache suexec, etc. Basically anything that expects setresuid(nonzero values); execve to drop caps. I haven't checked how many of the examples above actually do this. --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
