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authorEric Biggers <ebiggers@google.com>2017-09-21 13:57:42 -0700
committerDavid Howells <dhowells@redhat.com>2017-09-25 15:19:57 +0100
commite007ce9c59bddd1e67b94bc29036d920f5c5428a (patch)
tree19bbe9dc2f0df9bc1c423a9e01c9383627aeb18e /security
parentKEYS: restrict /proc/keys by credentials at open time (diff)
downloadlinux-dev-e007ce9c59bddd1e67b94bc29036d920f5c5428a.tar.xz
linux-dev-e007ce9c59bddd1e67b94bc29036d920f5c5428a.zip
KEYS: use kmemdup() in request_key_auth_new()
kmemdup() is preferred to kmalloc() followed by memcpy(). Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'security')
-rw-r--r--security/keys/request_key_auth.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/security/keys/request_key_auth.c b/security/keys/request_key_auth.c
index e356075ed2f8..6ebf1af8fce9 100644
--- a/security/keys/request_key_auth.c
+++ b/security/keys/request_key_auth.c
@@ -163,9 +163,10 @@ struct key *request_key_auth_new(struct key *target, const void *callout_info,
rka = kzalloc(sizeof(*rka), GFP_KERNEL);
if (!rka)
goto error;
- rka->callout_info = kmalloc(callout_len, GFP_KERNEL);
+ rka->callout_info = kmemdup(callout_info, callout_len, GFP_KERNEL);
if (!rka->callout_info)
goto error_free_rka;
+ rka->callout_len = callout_len;
/* see if the calling process is already servicing the key request of
* another process */
@@ -196,8 +197,6 @@ struct key *request_key_auth_new(struct key *target, const void *callout_info,
rka->target_key = key_get(target);
rka->dest_keyring = key_get(dest_keyring);
- memcpy(rka->callout_info, callout_info, callout_len);
- rka->callout_len = callout_len;
/* allocate the auth key */
sprintf(desc, "%x", target->serial);