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-rw-r--r--security/integrity/evm/evm_main.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/security/integrity/evm/evm_main.c b/security/integrity/evm/evm_main.c
index ba86155..e2ed498 100644
--- a/security/integrity/evm/evm_main.c
+++ b/security/integrity/evm/evm_main.c
@@ -145,6 +145,10 @@ static enum integrity_status evm_verify_hmac(struct dentry *dentry,
/* check value type */
switch (xattr_data->type) {
case EVM_XATTR_HMAC:
+ if (xattr_len != sizeof(struct evm_ima_xattr_data)) {
+ evm_status = INTEGRITY_FAIL;
+ goto out;
+ }
rc = evm_calc_hmac(dentry, xattr_name, xattr_value,
xattr_value_len, calc.digest);
if (rc)
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