From 0b3c9761d1e405514a551ed24d3ea89aea26ce14 Mon Sep 17 00:00:00 2001 From: Seth Forshee Date: Thu, 5 Feb 2015 10:44:50 -0600 Subject: evm: Translate user/group ids relative to s_user_ns when computing HMAC The EVM HMAC should be calculated using the on disk user and group ids, so the k[ug]ids in the inode must be translated relative to the s_user_ns of the inode's super block. Signed-off-by: Seth Forshee Signed-off-by: Eric W. Biederman diff --git a/security/integrity/evm/evm_crypto.c b/security/integrity/evm/evm_crypto.c index 30b6b7d0..11c1d30 100644 --- a/security/integrity/evm/evm_crypto.c +++ b/security/integrity/evm/evm_crypto.c @@ -151,8 +151,8 @@ static void hmac_add_misc(struct shash_desc *desc, struct inode *inode, memset(&hmac_misc, 0, sizeof(hmac_misc)); hmac_misc.ino = inode->i_ino; hmac_misc.generation = inode->i_generation; - hmac_misc.uid = from_kuid(&init_user_ns, inode->i_uid); - hmac_misc.gid = from_kgid(&init_user_ns, inode->i_gid); + hmac_misc.uid = from_kuid(inode->i_sb->s_user_ns, inode->i_uid); + hmac_misc.gid = from_kgid(inode->i_sb->s_user_ns, inode->i_gid); hmac_misc.mode = inode->i_mode; crypto_shash_update(desc, (const u8 *)&hmac_misc, sizeof(hmac_misc)); if (evm_hmac_attrs & EVM_ATTR_FSUUID) -- cgit v0.10.2