From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Jeremy Sowden <jeremy@azazel.net>,
Florian Westphal <fw@strlen.de>,
Pablo Neira Ayuso <pablo@netfilter.org>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.10 05/22] netfilter: ip6_tables: zero-initialize fragment offset
Date: Thu, 14 Oct 2021 16:54:11 +0200 [thread overview]
Message-ID: <20211014145208.156776903@linuxfoundation.org> (raw)
In-Reply-To: <20211014145207.979449962@linuxfoundation.org>
From: Jeremy Sowden <jeremy@azazel.net>
[ Upstream commit 310e2d43c3ad429c1fba4b175806cf1f55ed73a6 ]
ip6tables only sets the `IP6T_F_PROTO` flag on a rule if a protocol is
specified (`-p tcp`, for example). However, if the flag is not set,
`ip6_packet_match` doesn't call `ipv6_find_hdr` for the skb, in which
case the fragment offset is left uninitialized and a garbage value is
passed to each matcher.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/ipv6/netfilter/ip6_tables.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index eb2b5404806c..d36168baf677 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -273,6 +273,7 @@ ip6t_do_table(struct sk_buff *skb,
* things we don't know, ie. tcp syn flag or ports). If the
* rule is also a fragment-specific rule, non-fragments won't
* match it. */
+ acpar.fragoff = 0;
acpar.hotdrop = false;
acpar.state = state;
--
2.33.0
next prev parent reply other threads:[~2021-10-14 15:03 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-14 14:54 [PATCH 5.10 00/22] 5.10.74-rc1 review Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 01/22] ext4: check and update i_disksize properly Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 02/22] ext4: correct the error path of ext4_write_inline_data_end() Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 03/22] ASoC: Intel: sof_sdw: tag SoundWire BEs as non-atomic Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 04/22] HID: apple: Fix logical maximum and usage maximum of Magic Keyboard JIS Greg Kroah-Hartman
2021-10-14 14:54 ` Greg Kroah-Hartman [this message]
2021-10-14 14:54 ` [PATCH 5.10 06/22] HID: wacom: Add new Intuos BT (CTL-4100WL/CTL-6100WL) device IDs Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 07/22] ASoC: SOF: loader: release_firmware() on load failure to avoid batching Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 08/22] netfilter: nf_nat_masquerade: make async masq_inet6_event handling generic Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 09/22] netfilter: nf_nat_masquerade: defer conntrack walk to work queue Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 10/22] mac80211: Drop frames from invalid MAC address in ad-hoc mode Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 11/22] m68k: Handle arrivals of multiple signals correctly Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 12/22] hwmon: (ltc2947) Properly handle errors when looking for the external clock Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 13/22] net: prevent user from passing illegal stab size Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 14/22] mac80211: check return value of rhashtable_init Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 15/22] vboxfs: fix broken legacy mount signature checking Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 16/22] net: sun: SUNVNET_COMMON should depend on INET Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 17/22] drm/amdgpu: fix gart.bo pin_count leak Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 18/22] scsi: ses: Fix unsigned comparison with less than zero Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 19/22] scsi: virtio_scsi: Fix spelling mistake "Unsupport" -> "Unsupported" Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 20/22] perf/core: fix userpage->time_enabled of inactive events Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 21/22] sched: Always inline is_percpu_thread() Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 5.10 22/22] hwmon: (pmbus/ibm-cffps) max_power_out swap changes Greg Kroah-Hartman
2021-10-14 18:20 ` [PATCH 5.10 00/22] 5.10.74-rc1 review Fox Chen
2021-10-14 21:08 ` Pavel Machek
2021-10-14 22:04 ` Florian Fainelli
2021-10-14 22:38 ` Shuah Khan
2021-10-15 7:21 ` Samuel Zou
2021-10-15 14:30 ` Sudip Mukherjee
2021-10-15 16:28 ` Daniel Díaz
2021-10-15 22:07 ` Guenter Roeck
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