diff options
| author | Taehee Yoo <ap420073@gmail.com> | 2018-11-16 13:32:35 +0100 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2018-11-17 19:13:58 +0100 |
| commit | b4e955e9f372035361fbc6f07b21fe2cc6a5be4a (patch) | |
| tree | 35342250225d3fdf09b55a2823046cc79c87cf6e /net | |
| parent | netfilter: nf_tables: fix use-after-free when deleting compat expressions (diff) | |
| download | linux-b4e955e9f372035361fbc6f07b21fe2cc6a5be4a.tar.xz linux-b4e955e9f372035361fbc6f07b21fe2cc6a5be4a.zip | |
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.c | 9 |
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; |