Description: KEYS: Disallow keyrings beginning with '.' to be joined as session keyrings
References:
Notes:
 bwh> A similar issue was fixed in 3.17 by commit a4e3b8d79a5c
 bwh> "KEYS: special dot prefixed keyring name bug fix" (which wrongly
 bwh> removed another check - fixed by commit 54e2c2c1a9d6
 bwh> "KEYS: Reinstate EPERM for a key type name beginning with a '.'")
Bugs:
upstream: released (4.11-rc8) [ee8f844e3c5a73b999edf733df1c529d6503ec2f]
4.9-upstream-stable: released (4.9.25) [a5c6e0a76817a3751f58d761aaff7c0b0c4001ff]
3.16-upstream-stable: released (3.16.44) [41bd08bfce7c33e0d383e7678e6d6c7e8e041524]
3.2-upstream-stable: released (3.2.89) [7488aaea277dc17eb12bda22c91332c804c62965]
sid: released (4.9.25-1)
3.16-jessie-security: released (3.16.43-1) [bugfix/all/keys-disallow-keyrings-beginning-with-.-to-be-joined.patch]
3.2-wheezy-security: released (3.2.88-1) [bugfix/all/keys-disallow-keyrings-beginning-with-.-to-be-joined.patch]