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authorRoberto Sassu <roberto.sassu@huawei.com>2020-04-14 11:01:31 +0300
committerMimi Zohar <zohar@linux.ibm.com>2020-05-08 06:36:25 +0300
commit0c4395fb2aa77341269ea619c5419ea48171883f (patch)
tree174d1f6258d9d28eb1c380de418eb2a9a49b314f /security
parentb59fda449cf07f2db3be3a67142e6c000f5e8d79 (diff)
downloadlinux-0c4395fb2aa77341269ea619c5419ea48171883f.tar.xz
evm: Fix possible memory leak in evm_calc_hmac_or_hash()
Don't immediately return if the signature is portable and security.ima is not present. Just set error so that memory allocated is freed before returning from evm_calc_hmac_or_hash(). Fixes: 50b977481fce9 ("EVM: Add support for portable signature format") Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com> Cc: stable@vger.kernel.org Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Diffstat (limited to 'security')
-rw-r--r--security/integrity/evm/evm_crypto.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/security/integrity/evm/evm_crypto.c b/security/integrity/evm/evm_crypto.c
index 35682852ddea..499ea01b2edc 100644
--- a/security/integrity/evm/evm_crypto.c
+++ b/security/integrity/evm/evm_crypto.c
@@ -241,7 +241,7 @@ static int evm_calc_hmac_or_hash(struct dentry *dentry,
/* Portable EVM signatures must include an IMA hash */
if (type == EVM_XATTR_PORTABLE_DIGSIG && !ima_present)
- return -EPERM;
+ error = -EPERM;
out:
kfree(xattr_value);
kfree(desc);