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-rw-r--r--security/keys/keyctl.c16
1 files changed, 11 insertions, 5 deletions
diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
index 447a7d5cee0f..ab0b337c84b4 100644
--- a/security/keys/keyctl.c
+++ b/security/keys/keyctl.c
@@ -99,7 +99,7 @@ SYSCALL_DEFINE5(add_key, const char __user *, _type,
/* pull the payload in if one was supplied */
payload = NULL;
- if (_payload) {
+ if (plen) {
ret = -ENOMEM;
payload = kvmalloc(plen, GFP_KERNEL);
if (!payload)
@@ -132,7 +132,10 @@ SYSCALL_DEFINE5(add_key, const char __user *, _type,
key_ref_put(keyring_ref);
error3:
- kvfree(payload);
+ if (payload) {
+ memzero_explicit(payload, plen);
+ kvfree(payload);
+ }
error2:
kfree(description);
error:
@@ -324,7 +327,7 @@ long keyctl_update_key(key_serial_t id,
/* pull the payload in if one was supplied */
payload = NULL;
- if (_payload) {
+ if (plen) {
ret = -ENOMEM;
payload = kmalloc(plen, GFP_KERNEL);
if (!payload)
@@ -347,7 +350,7 @@ long keyctl_update_key(key_serial_t id,
key_ref_put(key_ref);
error2:
- kfree(payload);
+ kzfree(payload);
error:
return ret;
}
@@ -1093,7 +1096,10 @@ long keyctl_instantiate_key_common(key_serial_t id,
keyctl_change_reqkey_auth(NULL);
error2:
- kvfree(payload);
+ if (payload) {
+ memzero_explicit(payload, plen);
+ kvfree(payload);
+ }
error:
return ret;
}