Re: [RFC PATCH 0/4] Split security_task_getsecid() into subj and obj variants

On 2/20/2021 6:41 AM, Paul Moore wrote: > On Fri, Feb 19, 2021 at 8:49 PM Casey Schaufler <casey(a)schaufler-ca.com&gt; wrote: >> On 2/19/2021 3:28 PM, Paul Moore wrote: >>> As discussed briefly on the list (lore link below), we are a little >>> sloppy when it comes to using task credentials, mixing both the >>> subjective and object credentials. This patch set attempts to fix >>> this by replacing security_task_getsecid() with two new hooks that >>> return either the subjective (_subj) or objective (_obj) credentials. >>> >>> https://lore.kernel.org/linux-security-module/806848326.0ifERbkFSE@x2/T/ >>> >>> Casey and John, I made a quick pass through the Smack and AppArmor >>> code in an effort to try and do the right thing, but I will admit >>> that I haven't tested those changes, just the SELinux code. I >>> would really appreciate your help in reviewing those changes. If >>> you find it easier, feel free to wholesale replace my Smack/AppArmor >>> patch with one of your own. >> A quick test pass didn't show up anything obviously >> amiss with the Smack changes. I have will do some more >> through inspection, but they look fine so far. > Thanks for testing it out and giving it a look. Beyond the Smack > specific changes, I'm also interested in making sure all the hook > callers are correct; I believe I made the correct substitutions, but a > second (or third (or fourth ...)) set of eyes is never a bad idea. I'm still not seeing anything that looks wrong. I'd suggest that Mimi have a look at the IMA bits.