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-rw-r--r--crypto/asymmetric_keys/asymmetric_type.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/crypto/asymmetric_keys/asymmetric_type.c b/crypto/asymmetric_keys/asymmetric_type.c
index 718e779a010e..f0f2111d2c66 100644
--- a/crypto/asymmetric_keys/asymmetric_type.c
+++ b/crypto/asymmetric_keys/asymmetric_type.c
@@ -90,15 +90,12 @@ EXPORT_SYMBOL_GPL(asymmetric_match_key_ids);
struct asymmetric_key_id *asymmetric_key_hex_to_key_id(const char *id)
{
struct asymmetric_key_id *match_id;
- const char *p;
- ptrdiff_t hexlen;
+ size_t hexlen;
+ int ret;
if (!*id)
return ERR_PTR(-EINVAL);
- for (p = id; *p; p++)
- if (!isxdigit(*p))
- return ERR_PTR(-EINVAL);
- hexlen = p - id;
+ hexlen = strlen(id);
if (hexlen & 1)
return ERR_PTR(-EINVAL);
@@ -107,7 +104,11 @@ struct asymmetric_key_id *asymmetric_key_hex_to_key_id(const char *id)
if (!match_id)
return ERR_PTR(-ENOMEM);
match_id->len = hexlen / 2;
- (void)hex2bin(match_id->data, id, hexlen / 2);
+ ret = hex2bin(match_id->data, id, hexlen / 2);
+ if (ret < 0) {
+ kfree(match_id);
+ return ERR_PTR(-EINVAL);
+ }
return match_id;
}