On Fri, Nov 6, 2020 at 8:42 PM Mikhail Novosyolov <m.novosyolov@xxxxxxxxxxxx> wrote: > > 06.11.2020 15:22, rishi gupta пишет: > > I am getting below error as selinux is denying access to the .ima > > keyring. Looking for guidance for asymmetric public key selinux > > policy. > > > > [ 172.014855] integrity: Request for unknown key 'id:87deb3bf' err -13 > I am getting the same error without selinux. If I make selinux permissive, it works for me. So I know in my case the problem is selinux. > > > > [ 172.015035] audit: type=1800 audit(1604596570.579:240): pid=825 > > uid=1021 auid=4294967295 ses=4294967295 > > subj=system_u:system_r:mydaemon_t:s0-s15:c0.c1023 op="appraise_data" > > cause="invalid-signature" comm="mydaemon" > > name="/usr/lib/libstdc++.so.6.0.25" dev="ubifs" ino=14353 res=0 > Selinux context is just logged here. It has nothing to do with reasons of ivalid signature. Public key seems to be not loaded. Basically when we access a file, driver checks if selinux allow access to it or not. In my case this function is returning -EACCES https://github.com/torvalds/linux/blob/master/security/keys/permission.c#L88 > > > > (a) Do I need to set the selinux context of file > > /etc/keys/x509_ima.der. If yes what it should be. > > (b) Do I need to set some selinux rule for .ima keyring. If yes how. I > > tried a lot but could not find any resource. > Usually IMA policy is loaded before SELinux policy I think I am using the policy defined in ima_policy driver as of now. My kernel is 4.14. > > > > Regards, > > Rishi
