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Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf

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Pablo Neira Ayuso says:

====================
Netfilter/IPVS fixes for net

The following patchset contains Netfilter/IPVS fixes for net:

1) Missing structure initialization in ebtables causes splat with
   32-bit user level on a 64-bit kernel, from Francesco Ruggeri.

2) Missing dependency on nf_defrag in IPVS IPv6 codebase, from
   Andrea Claudi.

3) Fix possible use-after-free from release path of target extensions.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2019-02-13 19:13:47 -05:00
commit f325ef7297
5 changed files with 18 additions and 8 deletions
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1
net/netfilter/ipvs/Kconfig
View File

@ -29,6 +29,7 @@ config IP_VS_IPV6
bool "IPv6 support for IPVS"
depends on IPV6 = y || IP_VS = IPV6
select IP6_NF_IPTABLES
select NF_DEFRAG_IPV6
---help---
Add IPv6 support to IPVS.

10
net/netfilter/ipvs/ip_vs_core.c
View File

@ -1536,14 +1536,12 @@ ip_vs_try_to_schedule(struct netns_ipvs *ipvs, int af, struct sk_buff *skb,
/* sorry, all this trouble for a no-hit :) */
IP_VS_DBG_PKT(12, af, pp, skb, iph->off,
"ip_vs_in: packet continues traversal as normal");
if (iph->fragoffs) {
/* Fragment that couldn't be mapped to a conn entry
* is missing module nf_defrag_ipv6
*/
IP_VS_DBG_RL("Unhandled frag, load nf_defrag_ipv6\n");
/* Fragment couldn't be mapped to a conn entry */
if (iph->fragoffs)
IP_VS_DBG_PKT(7, af, pp, skb, iph->off,
"unhandled fragment");
}
*verdict = NF_ACCEPT;
return 0;
}

10
net/netfilter/ipvs/ip_vs_ctl.c
View File

@ -43,6 +43,7 @@
#ifdef CONFIG_IP_VS_IPV6
#include <net/ipv6.h>
#include <net/ip6_route.h>
#include <net/netfilter/ipv6/nf_defrag_ipv6.h>
#endif
#include <net/route.h>
#include <net/sock.h>
@ -895,6 +896,7 @@ ip_vs_new_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest,
{
struct ip_vs_dest *dest;
unsigned int atype, i;
int ret = 0;
EnterFunction(2);
@ -905,6 +907,10 @@ ip_vs_new_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest,
atype & IPV6_ADDR_LINKLOCAL) &&
!__ip_vs_addr_is_local_v6(svc->ipvs->net, &udest->addr.in6))
return -EINVAL;
ret = nf_defrag_ipv6_enable(svc->ipvs->net);
if (ret)
return ret;
} else
#endif
{
@ -1228,6 +1234,10 @@ ip_vs_add_service(struct netns_ipvs *ipvs, struct ip_vs_service_user_kern *u,
ret = -EINVAL;
goto out_err;
}
ret = nf_defrag_ipv6_enable(ipvs->net);
if (ret)
goto out_err;
}
#endif

3
net/netfilter/nft_compat.c
View File

@ -315,6 +315,7 @@ nft_target_destroy(const struct nft_ctx *ctx, const struct nft_expr *expr)
{
struct xt_target *target = expr->ops->data;
void *info = nft_expr_priv(expr);
struct module *me = target->me;
struct xt_tgdtor_param par;
par.net = ctx->net;
@ -325,7 +326,7 @@ nft_target_destroy(const struct nft_ctx *ctx, const struct nft_expr *expr)
par.target->destroy(&par);
if (nft_xt_put(container_of(expr->ops, struct nft_xt, ops)))
module_put(target->me);
module_put(me);
}
static int nft_extension_dump_info(struct sk_buff *skb, int attr,

2
net/netfilter/x_tables.c
View File

@ -1899,7 +1899,7 @@ static int __init xt_init(void)
seqcount_init(&per_cpu(xt_recseq, i));
}
xt = kmalloc_array(NFPROTO_NUMPROTO, sizeof(struct xt_af), GFP_KERNEL);
xt = kcalloc(NFPROTO_NUMPROTO, sizeof(struct xt_af), GFP_KERNEL);
if (!xt)
return -ENOMEM;