dns_query() credulously assumes that keys are null-terminated and
returns a copy of a memory block that is off by one.
---
net/dns_resolver/dns_query.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/dns_resolver/dns_query.c b/net/dns_resolver/dns_query.c
index e7b6d53..84871a2 100644
--- a/net/dns_resolver/dns_query.c
+++ b/net/dns_resolver/dns_query.c
@@ -145,11 +145,11 @@ int dns_query(const char *type, const char *name, size_t
namelen,
len = upayload->datalen;
ret = -ENOMEM;
- *_result = kmalloc(len + 1, GFP_KERNEL);
+ *_result = kzalloc(len + 1, GFP_KERNEL);
if (!*_result)
goto put;
- memcpy(*_result, upayload->data, len + 1);
+ memcpy(*_result, upayload->data, len);
if (_expiry)
*_expiry = rkey->expiry;
--
1.7.10.4
--
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