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authorManuel Schölling <manuel.schoelling@gmx.de>2014-06-07 17:57:25 -0400
committerDavid S. Miller <davem@davemloft.net>2014-06-11 03:12:04 -0400
commit84a7c0b1db1c17d5ded8d3800228a608e1070b40 (patch)
tree95c67ab040a0fe4ade6d48902d6b5309c7f60370 /net/dns_resolver
parent2346829e641b804ece9ac9298136b56d9567c278 (diff)
dns_resolver: assure that dns_query() result is null-terminated
dns_query() credulously assumes that keys are null-terminated and returns a copy of a memory block that is off by one. Signed-off-by: Manuel Schölling <manuel.schoelling@gmx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dns_resolver')
-rw-r--r--net/dns_resolver/dns_query.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/dns_resolver/dns_query.c b/net/dns_resolver/dns_query.c
index e7b6d53eef88..6853d22ebc07 100644
--- a/net/dns_resolver/dns_query.c
+++ b/net/dns_resolver/dns_query.c
@@ -149,7 +149,9 @@ int dns_query(const char *type, const char *name, size_t namelen,
149 if (!*_result) 149 if (!*_result)
150 goto put; 150 goto put;
151 151
152 memcpy(*_result, upayload->data, len + 1); 152 memcpy(*_result, upayload->data, len);
153 *_result[len] = '\0';
154
153 if (_expiry) 155 if (_expiry)
154 *_expiry = rkey->expiry; 156 *_expiry = rkey->expiry;
155 157