diff options
| author | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2014-05-11 00:05:23 -0400 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2014-06-12 17:58:07 -0400 |
| commit | 2fb1c9a4f2dbc2f0bd2431c7fa64d0b5483864e4 (patch) | |
| tree | e4a1c5fd8871eaba1b2bb0b65405d9cb0d4bd6f6 /fs/debugfs | |
| parent | 14503eb99414ceffe348b82982d5770b745f6626 (diff) | |
evm: prohibit userspace writing 'security.evm' HMAC value
Calculating the 'security.evm' HMAC value requires access to the
EVM encrypted key. Only the kernel should have access to it. This
patch prevents userspace tools(eg. setfattr, cp --preserve=xattr)
from setting/modifying the 'security.evm' HMAC value directly.
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Cc: <stable@vger.kernel.org>
Diffstat (limited to 'fs/debugfs')
0 files changed, 0 insertions, 0 deletions