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Diffstat (limited to 'net/netfilter/xt_string.c')
-rw-r--r--net/netfilter/xt_string.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/net/netfilter/xt_string.c b/net/netfilter/xt_string.c
index 0ebb6ac2c8c..d8e3891b5f8 100644
--- a/net/netfilter/xt_string.c
+++ b/net/netfilter/xt_string.c
@@ -55,7 +55,10 @@ static int checkentry(const char *tablename,
/* Damn, can't handle this case properly with iptables... */
if (conf->from_offset > conf->to_offset)
return 0;
-
+ if (conf->algo[XT_STRING_MAX_ALGO_NAME_SIZE - 1] != '\0')
+ return 0;
+ if (conf->patlen > XT_STRING_MAX_PATTERN_SIZE)
+ return 0;
ts_conf = textsearch_prepare(conf->algo, conf->pattern, conf->patlen,
GFP_KERNEL, TS_AUTOLOAD);
if (IS_ERR(ts_conf))