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authorTaehee Yoo <ap420073@gmail.com>2018-11-16 15:32:35 +0300
committerPablo Neira Ayuso <pablo@netfilter.org>2018-11-17 21:13:58 +0300
commitb4e955e9f372035361fbc6f07b21fe2cc6a5be4a (patch)
tree35342250225d3fdf09b55a2823046cc79c87cf6e /net
parent29e3880109e357fdc607b4393f8308cef6af9413 (diff)
downloadlinux-b4e955e9f372035361fbc6f07b21fe2cc6a5be4a.tar.xz
netfilter: xt_hashlimit: fix a possible memory leak in htable_create()
In the htable_create(), hinfo is allocated by vmalloc() So that if error occurred, hinfo should be freed. Fixes: 11d5f15723c9 ("netfilter: xt_hashlimit: Create revision 2 to support higher pps rates") Signed-off-by: Taehee Yoo <ap420073@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
-rw-r--r--net/netfilter/xt_hashlimit.c9
1 files changed, 3 insertions, 6 deletions
diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c
index 3e7d259e5d8d..1ad4017f9b73 100644
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -295,9 +295,10 @@ static int htable_create(struct net *net, struct hashlimit_cfg3 *cfg,
/* copy match config into hashtable config */
ret = cfg_copy(&hinfo->cfg, (void *)cfg, 3);
-
- if (ret)
+ if (ret) {
+ vfree(hinfo);
return ret;
+ }
hinfo->cfg.size = size;
if (hinfo->cfg.max == 0)
@@ -814,7 +815,6 @@ hashlimit_mt_v1(const struct sk_buff *skb, struct xt_action_param *par)
int ret;
ret = cfg_copy(&cfg, (void *)&info->cfg, 1);
-
if (ret)
return ret;
@@ -830,7 +830,6 @@ hashlimit_mt_v2(const struct sk_buff *skb, struct xt_action_param *par)
int ret;
ret = cfg_copy(&cfg, (void *)&info->cfg, 2);
-
if (ret)
return ret;
@@ -921,7 +920,6 @@ static int hashlimit_mt_check_v1(const struct xt_mtchk_param *par)
return ret;
ret = cfg_copy(&cfg, (void *)&info->cfg, 1);
-
if (ret)
return ret;
@@ -940,7 +938,6 @@ static int hashlimit_mt_check_v2(const struct xt_mtchk_param *par)
return ret;
ret = cfg_copy(&cfg, (void *)&info->cfg, 2);
-
if (ret)
return ret;