This is a note to let you know that I've just added the patch titled
netfilter: ipv6: fix use-after-free Write in nf_nat_ipv6_manip_pkt
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
netfilter-ipv6-fix-use-after-free-write-in-nf_nat_ipv6_manip_pkt.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From b078556aecd791b0e5cb3a59f4c3a14273b52121 Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw(a)strlen.de>
Date: Mon, 19 Feb 2018 08:10:17 +0100
Subject: netfilter: ipv6: fix use-after-free Write in nf_nat_ipv6_manip_pkt
From: Florian Westphal <fw(a)strlen.de>
commit b078556aecd791b0e5cb3a59f4c3a14273b52121 upstream.
l4proto->manip_pkt() can cause reallocation of skb head so pointer
to the ipv6 header must be reloaded.
Reported-and-tested-by: <syzbot+10005f4292fc9cc89de7(a)syzkaller.appspotmail.com>
Fixes: 58a317f1061c89 ("netfilter: ipv6: add IPv6 NAT support")
Signed-off-by: Florian Westphal <fw(a)strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo(a)netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
net/ipv6/netfilter/nf_nat_l3proto_ipv6.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
+++ b/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
@@ -99,6 +99,10 @@ static bool nf_nat_ipv6_manip_pkt(struct
!l4proto->manip_pkt(skb, &nf_nat_l3proto_ipv6, iphdroff, hdroff,
target, maniptype))
return false;
+
+ /* must reload, offset might have changed */
+ ipv6h = (void *)skb->data + iphdroff;
+
manip_addr:
if (maniptype == NF_NAT_MANIP_SRC)
ipv6h->saddr = target->src.u3.in6;
Patches currently in stable-queue which might be from fw(a)strlen.de are
queue-3.18/netfilter-ipv6-fix-use-after-free-write-in-nf_nat_ipv6_manip_pkt.patch
queue-3.18/netfilter-ebtables-config_compat-don-t-trust-userland-offsets.patch
queue-3.18/netfilter-bridge-ebt_among-add-missing-match-size-checks.patch
This is a note to let you know that I've just added the patch titled
netfilter: ebtables: CONFIG_COMPAT: don't trust userland offsets
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
netfilter-ebtables-config_compat-don-t-trust-userland-offsets.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From b71812168571fa55e44cdd0254471331b9c4c4c6 Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw(a)strlen.de>
Date: Mon, 19 Feb 2018 01:24:15 +0100
Subject: netfilter: ebtables: CONFIG_COMPAT: don't trust userland offsets
From: Florian Westphal <fw(a)strlen.de>
commit b71812168571fa55e44cdd0254471331b9c4c4c6 upstream.
We need to make sure the offsets are not out of range of the
total size.
Also check that they are in ascending order.
The WARN_ON triggered by syzkaller (it sets panic_on_warn) is
changed to also bail out, no point in continuing parsing.
Briefly tested with simple ruleset of
-A INPUT --limit 1/s' --log
plus jump to custom chains using 32bit ebtables binary.
Reported-by: <syzbot+845a53d13171abf8bf29(a)syzkaller.appspotmail.com>
Signed-off-by: Florian Westphal <fw(a)strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo(a)netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
net/bridge/netfilter/ebtables.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -2019,7 +2019,9 @@ static int ebt_size_mwt(struct compat_eb
if (match_kern)
match_kern->match_size = ret;
- WARN_ON(type == EBT_COMPAT_TARGET && size_left);
+ if (WARN_ON(type == EBT_COMPAT_TARGET && size_left))
+ return -EINVAL;
+
match32 = (struct compat_ebt_entry_mwt *) buf;
}
@@ -2076,6 +2078,15 @@ static int size_entry_mwt(struct ebt_ent
*
* offsets are relative to beginning of struct ebt_entry (i.e., 0).
*/
+ for (i = 0; i < 4 ; ++i) {
+ if (offsets[i] >= *total)
+ return -EINVAL;
+ if (i == 0)
+ continue;
+ if (offsets[i-1] > offsets[i])
+ return -EINVAL;
+ }
+
for (i = 0, j = 1 ; j < 4 ; j++, i++) {
struct compat_ebt_entry_mwt *match32;
unsigned int size;
Patches currently in stable-queue which might be from fw(a)strlen.de are
queue-3.18/netfilter-ipv6-fix-use-after-free-write-in-nf_nat_ipv6_manip_pkt.patch
queue-3.18/netfilter-ebtables-config_compat-don-t-trust-userland-offsets.patch
queue-3.18/netfilter-bridge-ebt_among-add-missing-match-size-checks.patch
This is a note to let you know that I've just added the patch titled
netfilter: bridge: ebt_among: add missing match size checks
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
netfilter-bridge-ebt_among-add-missing-match-size-checks.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From c4585a2823edf4d1326da44d1524ecbfda26bb37 Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw(a)strlen.de>
Date: Mon, 19 Feb 2018 03:01:45 +0100
Subject: netfilter: bridge: ebt_among: add missing match size checks
From: Florian Westphal <fw(a)strlen.de>
commit c4585a2823edf4d1326da44d1524ecbfda26bb37 upstream.
ebt_among is special, it has a dynamic match size and is exempt
from the central size checks.
Therefore it must check that the size of the match structure
provided from userspace is sane by making sure em->match_size
is at least the minimum size of the expected structure.
The module has such a check, but its only done after accessing
a structure that might be out of bounds.
tested with: ebtables -A INPUT ... \
--among-dst fe:fe:fe:fe:fe:fe
--among-dst fe:fe:fe:fe:fe:fe --among-src fe:fe:fe:fe:ff:f,fe:fe:fe:fe:fe:fb,fe:fe:fe:fe:fc:fd,fe:fe:fe:fe:fe:fd,fe:fe:fe:fe:fe:fe
--among-src fe:fe:fe:fe:ff:f,fe:fe:fe:fe:fe:fa,fe:fe:fe:fe:fe:fd,fe:fe:fe:fe:fe:fe,fe:fe:fe:fe:fe:fe
Reported-by: <syzbot+fe0b19af568972814355(a)syzkaller.appspotmail.com>
Signed-off-by: Florian Westphal <fw(a)strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo(a)netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
net/bridge/netfilter/ebt_among.c | 21 +++++++++++++++++++--
1 file changed, 19 insertions(+), 2 deletions(-)
--- a/net/bridge/netfilter/ebt_among.c
+++ b/net/bridge/netfilter/ebt_among.c
@@ -172,18 +172,35 @@ ebt_among_mt(const struct sk_buff *skb,
return true;
}
+static bool poolsize_invalid(const struct ebt_mac_wormhash *w)
+{
+ return w && w->poolsize >= (INT_MAX / sizeof(struct ebt_mac_wormhash_tuple));
+}
+
static int ebt_among_mt_check(const struct xt_mtchk_param *par)
{
const struct ebt_among_info *info = par->matchinfo;
const struct ebt_entry_match *em =
container_of(par->matchinfo, const struct ebt_entry_match, data);
- int expected_length = sizeof(struct ebt_among_info);
+ unsigned int expected_length = sizeof(struct ebt_among_info);
const struct ebt_mac_wormhash *wh_dst, *wh_src;
int err;
+ if (expected_length > em->match_size)
+ return -EINVAL;
+
wh_dst = ebt_among_wh_dst(info);
- wh_src = ebt_among_wh_src(info);
+ if (poolsize_invalid(wh_dst))
+ return -EINVAL;
+
expected_length += ebt_mac_wormhash_size(wh_dst);
+ if (expected_length > em->match_size)
+ return -EINVAL;
+
+ wh_src = ebt_among_wh_src(info);
+ if (poolsize_invalid(wh_src))
+ return -EINVAL;
+
expected_length += ebt_mac_wormhash_size(wh_src);
if (em->match_size != EBT_ALIGN(expected_length)) {
Patches currently in stable-queue which might be from fw(a)strlen.de are
queue-3.18/netfilter-ipv6-fix-use-after-free-write-in-nf_nat_ipv6_manip_pkt.patch
queue-3.18/netfilter-ebtables-config_compat-don-t-trust-userland-offsets.patch
queue-3.18/netfilter-bridge-ebt_among-add-missing-match-size-checks.patch
Hi Greg,
Please apply the following upstream commits to v4.14.y.
d1c4cb447a7e ("ASoC: Intel: Skylake: Fix jack name format substitution")
cedb6415f9ec ("ASoC: Intel: kbl: fix jack name")
Please see https://bugs.chromium.org/p/chromium/issues/detail?id=786545
for details.
Thanks,
Guenter
This is a note to let you know that I've just added the patch titled
ASoC: Intel: Skylake: Fix jack name format substitution
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
asoc-intel-skylake-fix-jack-name-format-substitution.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From d1c4cb447a7efcb5608a33cdfed8ab4234378b0a Mon Sep 17 00:00:00 2001
From: Chintan Patel <chintan.m.patel(a)intel.com>
Date: Mon, 18 Sep 2017 08:43:18 -0700
Subject: ASoC: Intel: Skylake: Fix jack name format substitution
From: Chintan Patel <chintan.m.patel(a)intel.com>
commit d1c4cb447a7efcb5608a33cdfed8ab4234378b0a upstream.
Jack name is not getting formatted correctly hence resulting
in invalid name for HDMI/DP input devices.
This was recently exposed due changes brought by MST:
commit 3a13347f05fd ("ASoC: Intel: kbl: Add jack port initialize
in kbl machine drivers")
Signed-off-by: Chintan Patel <chintan.m.patel(a)intel.com>
Acked-By: Vinod Koul <vinod.koul(a)intel.com>
Signed-off-by: Mark Brown <broonie(a)kernel.org>
Cc: Guenter Roeck <linux(a)roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c | 2 ++
1 file changed, 2 insertions(+)
--- a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
+++ b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
@@ -604,6 +604,8 @@ static int kabylake_card_late_probe(stru
list_for_each_entry(pcm, &ctx->hdmi_pcm_list, head) {
codec = pcm->codec_dai->codec;
+ snprintf(jack_name, sizeof(jack_name),
+ "HDMI/DP, pcm=%d Jack", pcm->device);
err = snd_soc_card_jack_new(card, jack_name,
SND_JACK_AVOUT, &ctx->kabylake_hdmi[i],
NULL, 0);
Patches currently in stable-queue which might be from chintan.m.patel(a)intel.com are
queue-4.14/asoc-intel-skylake-fix-jack-name-format-substitution.patch
This is a note to let you know that I've just added the patch titled
ASoC: Intel: kbl: fix jack name
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
asoc-intel-kbl-fix-jack-name.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From cedb6415f9ece6d3368aa0ac8a433caff799792a Mon Sep 17 00:00:00 2001
From: Vinod Koul <vinod.koul(a)intel.com>
Date: Tue, 31 Oct 2017 16:47:27 +0530
Subject: ASoC: Intel: kbl: fix jack name
From: Vinod Koul <vinod.koul(a)intel.com>
commit cedb6415f9ece6d3368aa0ac8a433caff799792a upstream.
Commit d1c4cb447a7e ("ASoC: Intel: Skylake: Fix jack name format
substitution") added Jack name but erroneously added a space as well,
so remove the space in Jack name.
Fixes: d1c4cb447a7e ("ASoC: Intel: Skylake: Fix jack name format substitution")
Signed-off-by: Vinod Koul <vinod.koul(a)intel.com>
Signed-off-by: Mark Brown <broonie(a)kernel.org>
Cc: Guenter Roeck <linux(a)roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
+++ b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
@@ -605,7 +605,7 @@ static int kabylake_card_late_probe(stru
list_for_each_entry(pcm, &ctx->hdmi_pcm_list, head) {
codec = pcm->codec_dai->codec;
snprintf(jack_name, sizeof(jack_name),
- "HDMI/DP, pcm=%d Jack", pcm->device);
+ "HDMI/DP,pcm=%d Jack", pcm->device);
err = snd_soc_card_jack_new(card, jack_name,
SND_JACK_AVOUT, &ctx->kabylake_hdmi[i],
NULL, 0);
Patches currently in stable-queue which might be from vinod.koul(a)intel.com are
queue-4.14/asoc-intel-skylake-fix-jack-name-format-substitution.patch
queue-4.14/asoc-intel-kbl-fix-jack-name.patch