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(parent: 4be92db) | patch
evm: Check size of security.evm before using it
authorRoberto Sassu <roberto.sassu@huawei.com>
Fri, 4 Sep 2020 09:23:30 +0000 (11:23 +0200)
committerMimi Zohar <zohar@linux.ibm.com>
Tue, 15 Sep 2020 17:47:42 +0000 (13:47 -0400)
commit455b6c9112eff8d249e32ba165742085678a80a4
treefaed71382cd53d9bcd78a58328cdb1430c67b64ctree | snapshot
parent4be92db3b5667f3a5c874a04635b037dc5e3f373commit | diff
evm: Check size of security.evm before using it

This patch checks the size for the EVM_IMA_XATTR_DIGSIG and
EVM_XATTR_PORTABLE_DIGSIG types to ensure that the algorithm is read from
the buffer returned by vfs_getxattr_alloc().

Cc: stable@vger.kernel.org # 4.19.x
Fixes: 5feeb61183dde ("evm: Allow non-SHA1 digital signatures")
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
security/integrity/evm/evm_main.c diff | blob | history
Domain: System / Kernel;