[PATCH] ima: Use kmemdup rather than kmalloc+memcpy
Alex Dewar
alex.dewar90 at gmail.com
Wed Sep 9 19:09:06 UTC 2020
Issue identified with Coccinelle.
Signed-off-by: Alex Dewar <alex.dewar90 at gmail.com>
---
security/integrity/ima/ima_policy.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
index b4de33074b37..1de3140b334f 100644
--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c
@@ -284,15 +284,14 @@ static struct ima_rule_entry *ima_lsm_copy_rule(struct ima_rule_entry *entry)
struct ima_rule_entry *nentry;
int i;
- nentry = kmalloc(sizeof(*nentry), GFP_KERNEL);
- if (!nentry)
- return NULL;
-
/*
* Immutable elements are copied over as pointers and data; only
* lsm rules can change
*/
- memcpy(nentry, entry, sizeof(*nentry));
+ nentry = kmemdup(entry, sizeof(*nentry), GFP_KERNEL);
+ if (!nentry)
+ return NULL;
+
memset(nentry->lsm, 0, sizeof_field(struct ima_rule_entry, lsm));
for (i = 0; i < MAX_LSM_RULES; i++) {
--
2.28.0
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