From: Florian Westphal <fw@strlen.de>
To: <netfilter-devel@vger.kernel.org>
Cc: Florian Westphal <fw@strlen.de>
Subject: [PATCH nf 16/17] netfilter: x_tables: remove obsolete check
Date: Fri, 1 Apr 2016 14:17:36 +0200 [thread overview]
Message-ID: <1459513057-30652-17-git-send-email-fw@strlen.de> (raw)
In-Reply-To: <1459513057-30652-1-git-send-email-fw@strlen.de>
Since 'netfilter: x_tables: validate targets of jumps' change we
validate that the target aligns exactly with beginning of a rule,
so offset test is now redundant.
Signed-off-by: Florian Westphal <fw@strlen.de>
---
net/ipv4/netfilter/arp_tables.c | 8 --------
net/ipv4/netfilter/ip_tables.c | 7 -------
net/ipv6/netfilter/ip6_tables.c | 7 -------
3 files changed, 22 deletions(-)
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index 668c5dc..8cefb7a 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -461,14 +461,6 @@ static int mark_source_chains(const struct xt_table_info *newinfo,
if (strcmp(t->target.u.user.name,
XT_STANDARD_TARGET) == 0 &&
newpos >= 0) {
- if (newpos > newinfo->size -
- sizeof(struct arpt_entry)) {
- duprintf("mark_source_chains: "
- "bad verdict (%i)\n",
- newpos);
- return 0;
- }
-
/* This a jump; chase it. */
duprintf("Jump rule %u -> %u\n",
pos, newpos);
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index 4585aa7..9340ce0 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -542,13 +542,6 @@ mark_source_chains(const struct xt_table_info *newinfo,
if (strcmp(t->target.u.user.name,
XT_STANDARD_TARGET) == 0 &&
newpos >= 0) {
- if (newpos > newinfo->size -
- sizeof(struct ipt_entry)) {
- duprintf("mark_source_chains: "
- "bad verdict (%i)\n",
- newpos);
- return 0;
- }
/* This a jump; chase it. */
duprintf("Jump rule %u -> %u\n",
pos, newpos);
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index fd06251..aa01085 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -554,13 +554,6 @@ mark_source_chains(const struct xt_table_info *newinfo,
if (strcmp(t->target.u.user.name,
XT_STANDARD_TARGET) == 0 &&
newpos >= 0) {
- if (newpos > newinfo->size -
- sizeof(struct ip6t_entry)) {
- duprintf("mark_source_chains: "
- "bad verdict (%i)\n",
- newpos);
- return 0;
- }
/* This a jump; chase it. */
duprintf("Jump rule %u -> %u\n",
pos, newpos);
--
2.7.3
next prev parent reply other threads:[~2016-04-01 12:18 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-01 12:17 [PATCH nf 00/17] netfilter: xtables: stricter ruleset validation Florian Westphal
2016-04-01 12:17 ` [PATCH nf 01/17] netfilter: x_tables: don't move to non-existent next rule Florian Westphal
2016-04-01 12:17 ` [PATCH nf 02/17] netfilter: x_tables: validate targets of jumps Florian Westphal
2016-04-01 12:24 ` Jan Engelhardt
2016-04-01 12:17 ` [PATCH nf 03/17] netfilter: x_tables: add and use xt_check_entry_offsets Florian Westphal
2016-04-01 12:17 ` [PATCH nf 04/17] netfilter: x_tables: kill check_entry helper Florian Westphal
2016-04-01 12:17 ` [PATCH nf 05/17] netfilter: x_tables: assert minimum target size Florian Westphal
2016-04-01 12:17 ` [PATCH nf 06/17] netfilter: x_tables: add compat version of xt_check_entry_offsets Florian Westphal
2016-04-01 12:17 ` [PATCH nf 07/17] netfilter: x_tables: check standard target size too Florian Westphal
2016-04-01 12:17 ` [PATCH nf 08/17] netfilter: x_tables: check for bogus target offset Florian Westphal
2016-04-01 12:17 ` [PATCH nf 09/17] netfilter: x_tables: validate all offsets and sizes in a rule Florian Westphal
2016-04-01 12:17 ` [PATCH nf 10/17] netfilter: ip_tables: simplify translate_compat_table args Florian Westphal
2016-04-01 12:17 ` [PATCH nf 11/17] netfilter: ip6_tables: " Florian Westphal
2016-04-01 12:17 ` [PATCH nf 12/17] netfilter: arp_tables: " Florian Westphal
2016-04-01 12:17 ` [PATCH nf 13/17] netfilter: x_tables: xt_compat_match_from_user doesn't need a retval Florian Westphal
2016-04-01 12:17 ` [PATCH nf 14/17] netfilter: x_tables: do compat validation via translate_table Florian Westphal
2016-04-01 12:17 ` [PATCH nf 15/17] netfilter: x_tables: remove obsolete overflow check for compat case too Florian Westphal
2016-04-01 12:17 ` Florian Westphal [this message]
2016-04-01 12:17 ` [PATCH nf 17/17] netfilter: x_tables: introduce and use xt_copy_counters_from_user Florian Westphal
2016-04-01 12:52 ` kbuild test robot
2016-04-01 13:06 ` kbuild test robot
2016-04-01 13:33 ` kbuild test robot
2016-04-01 13:37 ` [PATCH v2 " Florian Westphal
2016-04-08 11:58 ` [PATCH nf 00/17] netfilter: xtables: stricter ruleset validation Pablo Neira Ayuso
2016-04-08 11:59 ` Florian Westphal
2016-04-12 21:54 ` Pablo Neira Ayuso
2016-04-13 22:33 ` Pablo Neira Ayuso
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