10 Oct, 2012

1 commit

• 631cc66eb   MODSIGN: Provide module signing public keys to the kernel ... Browse Code »

  Include a PGP keyring containing the public keys required to perform module
  verification in the kernel image during build and create a special keyring
  during boot which is then populated with keys of crypto type holding the public
  keys found in the PGP keyring.

  These can be seen by root:

  [root@andromeda ~]# cat /proc/keys
  07ad4ee0 I----- 1 perm 3f010000 0 0 crypto modsign.0: RSA 87b9b3bd []
  15c7f8c3 I----- 1 perm 1f030000 0 0 keyring .module_sign: 1/4
  ...

  It is probably worth permitting root to invalidate these keys, resulting in
  their removal and preventing further modules from being loaded with that key.

  Signed-off-by: David Howells
  Signed-off-by: Rusty Russell

  David Howells

  2012-10-10 17:31:22 +0800