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Issue 681957 link

Starred by 1 user
Status: Archived
Owner:
groeck@chromium.org
Closed: Jan 2017
Cc:
█ gkihumba@chromium.org
█ dtor@chromium.org
chromeos-kernel-security-bug-access@google.com
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 1
Type: Bug-Security



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Security: CVE-2016-8399

Project Member Reported by groeck@chromium.org, Jan 17 2017 
Advisory: CVE-2016-8399
  Details:  https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-8399
  CVSS severity score: 7.6/10.0
  Confidence: high
  Description:

An elevation of privilege vulnerability in the kernel networking subsystem could enable a local malicious application to execute arbitrary code within the context of the kernel. This issue is rated as Moderate because it first requires compromising a privileged process and current compiler optimizations restrict access to the vulnerable code. Product: Android. Versions: Kernel-3.10, Kernel-3.18. Android ID: A-31349935.

Comment 1 by palmer@chromium.org, Jan 18 2017

Labels: -OS-Linux OS-Chrome
Project Member

Comment 2 by bugdroid1@chromium.org, Jan 19 2017

Labels: merge-merged-chromeos-4.4
The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/third_party/kernel/+/07ba9c1e305ecd700e726b66a51e6e11338dedac

commit 07ba9c1e305ecd700e726b66a51e6e11338dedac
Author: Kees Cook <keescook@chromium.org>
Date: Mon Dec 05 18:34:38 2016

UPSTREAM: net: ping: check minimum size on ICMP header length

Prior to commit c0371da6047a ("put iov_iter into msghdr") in v3.19, there
was no check that the iovec contained enough bytes for an ICMP header,
and the read loop would walk across neighboring stack contents. Since the
iov_iter conversion, bad arguments are noticed, but the returned error is
EFAULT. Returning EINVAL is a clearer error and also solves the problem
prior to v3.19.

This was found using trinity with KASAN on v3.18:

BUG: KASAN: stack-out-of-bounds in memcpy_fromiovec+0x60/0x114 at addr ffffffc071077da0
Read of size 8 by task trinity-c2/9623
page:ffffffbe034b9a08 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0x0()
page dumped because: kasan: bad access detected
CPU: 0 PID: 9623 Comm: trinity-c2 Tainted: G    BU         3.18.0-dirty #15
Hardware name: Google Tegra210 Smaug Rev 1,3+ (DT)
Call trace:
[<ffffffc000209c98>] dump_backtrace+0x0/0x1ac arch/arm64/kernel/traps.c:90
[<ffffffc000209e54>] show_stack+0x10/0x1c arch/arm64/kernel/traps.c:171
[<     inline     >] __dump_stack lib/dump_stack.c:15
[<ffffffc000f18dc4>] dump_stack+0x7c/0xd0 lib/dump_stack.c:50
[<     inline     >] print_address_description mm/kasan/report.c:147
[<     inline     >] kasan_report_error mm/kasan/report.c:236
[<ffffffc000373dcc>] kasan_report+0x380/0x4b8 mm/kasan/report.c:259
[<     inline     >] check_memory_region mm/kasan/kasan.c:264
[<ffffffc00037352c>] __asan_load8+0x20/0x70 mm/kasan/kasan.c:507
[<ffffffc0005b9624>] memcpy_fromiovec+0x5c/0x114 lib/iovec.c:15
[<     inline     >] memcpy_from_msg include/linux/skbuff.h:2667
[<ffffffc000ddeba0>] ping_common_sendmsg+0x50/0x108 net/ipv4/ping.c:674
[<ffffffc000dded30>] ping_v4_sendmsg+0xd8/0x698 net/ipv4/ping.c:714
[<ffffffc000dc91dc>] inet_sendmsg+0xe0/0x12c net/ipv4/af_inet.c:749
[<     inline     >] __sock_sendmsg_nosec net/socket.c:624
[<     inline     >] __sock_sendmsg net/socket.c:632
[<ffffffc000cab61c>] sock_sendmsg+0x124/0x164 net/socket.c:643
[<     inline     >] SYSC_sendto net/socket.c:1797
[<ffffffc000cad270>] SyS_sendto+0x178/0x1d8 net/socket.c:1761

CVE-2016-8399

BUG= chromium:681957 
TEST=Build and run

Change-Id: Ie0446d9dbafdf2c81e03c045e22caf727417533b
Reported-by: Qidan He <i@flanker017.me>
Fixes: c319b4d76b9e ("net: ipv4: add IPPROTO_ICMP socket kind")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Guenter Roeck <groeck@chromium.org>
(cherry picked from commit 0eab121ef875)
Reviewed-on: https://chromium-review.googlesource.com/429050
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>

[modify] https://crrev.com/07ba9c1e305ecd700e726b66a51e6e11338dedac/net/ipv4/ping.c
Project Member

Comment 3 by bugdroid1@chromium.org, Jan 19 2017

Labels: merge-merged-chromeos-3.18
The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/third_party/kernel/+/6c568c9c9e02112475357bf7bbd6973ede10e3d9

commit 6c568c9c9e02112475357bf7bbd6973ede10e3d9
Author: Kees Cook <keescook@chromium.org>
Date: Mon Dec 05 18:34:38 2016

UPSTREAM: net: ping: check minimum size on ICMP header length

Prior to commit c0371da6047a ("put iov_iter into msghdr") in v3.19, there
was no check that the iovec contained enough bytes for an ICMP header,
and the read loop would walk across neighboring stack contents. Since the
iov_iter conversion, bad arguments are noticed, but the returned error is
EFAULT. Returning EINVAL is a clearer error and also solves the problem
prior to v3.19.

This was found using trinity with KASAN on v3.18:

BUG: KASAN: stack-out-of-bounds in memcpy_fromiovec+0x60/0x114 at addr ffffffc071077da0
Read of size 8 by task trinity-c2/9623
page:ffffffbe034b9a08 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0x0()
page dumped because: kasan: bad access detected
CPU: 0 PID: 9623 Comm: trinity-c2 Tainted: G    BU         3.18.0-dirty #15
Hardware name: Google Tegra210 Smaug Rev 1,3+ (DT)
Call trace:
[<ffffffc000209c98>] dump_backtrace+0x0/0x1ac arch/arm64/kernel/traps.c:90
[<ffffffc000209e54>] show_stack+0x10/0x1c arch/arm64/kernel/traps.c:171
[<     inline     >] __dump_stack lib/dump_stack.c:15
[<ffffffc000f18dc4>] dump_stack+0x7c/0xd0 lib/dump_stack.c:50
[<     inline     >] print_address_description mm/kasan/report.c:147
[<     inline     >] kasan_report_error mm/kasan/report.c:236
[<ffffffc000373dcc>] kasan_report+0x380/0x4b8 mm/kasan/report.c:259
[<     inline     >] check_memory_region mm/kasan/kasan.c:264
[<ffffffc00037352c>] __asan_load8+0x20/0x70 mm/kasan/kasan.c:507
[<ffffffc0005b9624>] memcpy_fromiovec+0x5c/0x114 lib/iovec.c:15
[<     inline     >] memcpy_from_msg include/linux/skbuff.h:2667
[<ffffffc000ddeba0>] ping_common_sendmsg+0x50/0x108 net/ipv4/ping.c:674
[<ffffffc000dded30>] ping_v4_sendmsg+0xd8/0x698 net/ipv4/ping.c:714
[<ffffffc000dc91dc>] inet_sendmsg+0xe0/0x12c net/ipv4/af_inet.c:749
[<     inline     >] __sock_sendmsg_nosec net/socket.c:624
[<     inline     >] __sock_sendmsg net/socket.c:632
[<ffffffc000cab61c>] sock_sendmsg+0x124/0x164 net/socket.c:643
[<     inline     >] SYSC_sendto net/socket.c:1797
[<ffffffc000cad270>] SyS_sendto+0x178/0x1d8 net/socket.c:1761

CVE-2016-8399

BUG= chromium:681957 
TEST=Build and run

Change-Id: Ie0446d9dbafdf2c81e03c045e22caf727417533b
Reported-by: Qidan He <i@flanker017.me>
Fixes: c319b4d76b9e ("net: ipv4: add IPPROTO_ICMP socket kind")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Guenter Roeck <groeck@chromium.org>
(cherry picked from commit 0eab121ef875)
Reviewed-on: https://chromium-review.googlesource.com/429090

[modify] https://crrev.com/6c568c9c9e02112475357bf7bbd6973ede10e3d9/net/ipv4/ping.c
Project Member

Comment 4 by bugdroid1@chromium.org, Jan 19 2017

Labels: merge-merged-chromeos-3.10
The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/third_party/kernel/+/8462653d45eb206ec1a110da5ce8149e08605309

commit 8462653d45eb206ec1a110da5ce8149e08605309
Author: Kees Cook <keescook@chromium.org>
Date: Mon Dec 05 18:34:38 2016

BACKPORT: net: ping: check minimum size on ICMP header length

Prior to commit c0371da6047a ("put iov_iter into msghdr") in v3.19, there
was no check that the iovec contained enough bytes for an ICMP header,
and the read loop would walk across neighboring stack contents. Since the
iov_iter conversion, bad arguments are noticed, but the returned error is
EFAULT. Returning EINVAL is a clearer error and also solves the problem
prior to v3.19.

This was found using trinity with KASAN on v3.18:

BUG: KASAN: stack-out-of-bounds in memcpy_fromiovec+0x60/0x114 at addr ffffffc071077da0
Read of size 8 by task trinity-c2/9623
page:ffffffbe034b9a08 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0x0()
page dumped because: kasan: bad access detected
CPU: 0 PID: 9623 Comm: trinity-c2 Tainted: G    BU         3.18.0-dirty #15
Hardware name: Google Tegra210 Smaug Rev 1,3+ (DT)
Call trace:
[<ffffffc000209c98>] dump_backtrace+0x0/0x1ac arch/arm64/kernel/traps.c:90
[<ffffffc000209e54>] show_stack+0x10/0x1c arch/arm64/kernel/traps.c:171
[<     inline     >] __dump_stack lib/dump_stack.c:15
[<ffffffc000f18dc4>] dump_stack+0x7c/0xd0 lib/dump_stack.c:50
[<     inline     >] print_address_description mm/kasan/report.c:147
[<     inline     >] kasan_report_error mm/kasan/report.c:236
[<ffffffc000373dcc>] kasan_report+0x380/0x4b8 mm/kasan/report.c:259
[<     inline     >] check_memory_region mm/kasan/kasan.c:264
[<ffffffc00037352c>] __asan_load8+0x20/0x70 mm/kasan/kasan.c:507
[<ffffffc0005b9624>] memcpy_fromiovec+0x5c/0x114 lib/iovec.c:15
[<     inline     >] memcpy_from_msg include/linux/skbuff.h:2667
[<ffffffc000ddeba0>] ping_common_sendmsg+0x50/0x108 net/ipv4/ping.c:674
[<ffffffc000dded30>] ping_v4_sendmsg+0xd8/0x698 net/ipv4/ping.c:714
[<ffffffc000dc91dc>] inet_sendmsg+0xe0/0x12c net/ipv4/af_inet.c:749
[<     inline     >] __sock_sendmsg_nosec net/socket.c:624
[<     inline     >] __sock_sendmsg net/socket.c:632
[<ffffffc000cab61c>] sock_sendmsg+0x124/0x164 net/socket.c:643
[<     inline     >] SYSC_sendto net/socket.c:1797
[<ffffffc000cad270>] SyS_sendto+0x178/0x1d8 net/socket.c:1761

CVE-2016-8399

BUG= chromium:681957 
TEST=Build and run

Change-Id: Ie0446d9dbafdf2c81e03c045e22caf727417533b
Reported-by: Qidan He <i@flanker017.me>
Fixes: c319b4d76b9e ("net: ipv4: add IPPROTO_ICMP socket kind")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Guenter Roeck <groeck@chromium.org>
(cherry picked from commit 0eab121ef875)
[backport: icmp header length is fixed]
(cherry picked from commit 91ecac0cc4a9b97cb4cb5041818e0f9de68d9266)
Signed-off-by: Guenter Roeck <groeck@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/429051
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>

[modify] https://crrev.com/8462653d45eb206ec1a110da5ce8149e08605309/net/ipv4/ping.c
Project Member

Comment 5 by bugdroid1@chromium.org, Jan 19 2017

Labels: merge-merged-chromeos-3.14
The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/third_party/kernel/+/34d097a2dfeea5d93cd40b53d5ccb6bd74b30883

commit 34d097a2dfeea5d93cd40b53d5ccb6bd74b30883
Author: Kees Cook <keescook@chromium.org>
Date: Mon Dec 05 18:34:38 2016

UPSTREAM: net: ping: check minimum size on ICMP header length

Prior to commit c0371da6047a ("put iov_iter into msghdr") in v3.19, there
was no check that the iovec contained enough bytes for an ICMP header,
and the read loop would walk across neighboring stack contents. Since the
iov_iter conversion, bad arguments are noticed, but the returned error is
EFAULT. Returning EINVAL is a clearer error and also solves the problem
prior to v3.19.

This was found using trinity with KASAN on v3.18:

BUG: KASAN: stack-out-of-bounds in memcpy_fromiovec+0x60/0x114 at addr ffffffc071077da0
Read of size 8 by task trinity-c2/9623
page:ffffffbe034b9a08 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0x0()
page dumped because: kasan: bad access detected
CPU: 0 PID: 9623 Comm: trinity-c2 Tainted: G    BU         3.18.0-dirty #15
Hardware name: Google Tegra210 Smaug Rev 1,3+ (DT)
Call trace:
[<ffffffc000209c98>] dump_backtrace+0x0/0x1ac arch/arm64/kernel/traps.c:90
[<ffffffc000209e54>] show_stack+0x10/0x1c arch/arm64/kernel/traps.c:171
[<     inline     >] __dump_stack lib/dump_stack.c:15
[<ffffffc000f18dc4>] dump_stack+0x7c/0xd0 lib/dump_stack.c:50
[<     inline     >] print_address_description mm/kasan/report.c:147
[<     inline     >] kasan_report_error mm/kasan/report.c:236
[<ffffffc000373dcc>] kasan_report+0x380/0x4b8 mm/kasan/report.c:259
[<     inline     >] check_memory_region mm/kasan/kasan.c:264
[<ffffffc00037352c>] __asan_load8+0x20/0x70 mm/kasan/kasan.c:507
[<ffffffc0005b9624>] memcpy_fromiovec+0x5c/0x114 lib/iovec.c:15
[<     inline     >] memcpy_from_msg include/linux/skbuff.h:2667
[<ffffffc000ddeba0>] ping_common_sendmsg+0x50/0x108 net/ipv4/ping.c:674
[<ffffffc000dded30>] ping_v4_sendmsg+0xd8/0x698 net/ipv4/ping.c:714
[<ffffffc000dc91dc>] inet_sendmsg+0xe0/0x12c net/ipv4/af_inet.c:749
[<     inline     >] __sock_sendmsg_nosec net/socket.c:624
[<     inline     >] __sock_sendmsg net/socket.c:632
[<ffffffc000cab61c>] sock_sendmsg+0x124/0x164 net/socket.c:643
[<     inline     >] SYSC_sendto net/socket.c:1797
[<ffffffc000cad270>] SyS_sendto+0x178/0x1d8 net/socket.c:1761

CVE-2016-8399

BUG= chromium:681957 
TEST=Build and run

Change-Id: Ie0446d9dbafdf2c81e03c045e22caf727417533b
Reported-by: Qidan He <i@flanker017.me>
Fixes: c319b4d76b9e ("net: ipv4: add IPPROTO_ICMP socket kind")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Guenter Roeck <groeck@chromium.org>
(cherry picked from commit 0eab121ef875)
Reviewed-on: https://chromium-review.googlesource.com/429091
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>

[modify] https://crrev.com/34d097a2dfeea5d93cd40b53d5ccb6bd74b30883/net/ipv4/ping.c
Project Member

Comment 6 by bugdroid1@chromium.org, Jan 19 2017

Labels: merge-merged-chromeos-3.8
The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/third_party/kernel/+/8b324418f58b6baa6dbdc673a0c194b24891dc8f

commit 8b324418f58b6baa6dbdc673a0c194b24891dc8f
Author: Kees Cook <keescook@chromium.org>
Date: Mon Dec 05 18:34:38 2016

BACKPORT: net: ping: check minimum size on ICMP header length

Prior to commit c0371da6047a ("put iov_iter into msghdr") in v3.19, there
was no check that the iovec contained enough bytes for an ICMP header,
and the read loop would walk across neighboring stack contents. Since the
iov_iter conversion, bad arguments are noticed, but the returned error is
EFAULT. Returning EINVAL is a clearer error and also solves the problem
prior to v3.19.

This was found using trinity with KASAN on v3.18:

BUG: KASAN: stack-out-of-bounds in memcpy_fromiovec+0x60/0x114 at addr ffffffc071077da0
Read of size 8 by task trinity-c2/9623
page:ffffffbe034b9a08 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0x0()
page dumped because: kasan: bad access detected
CPU: 0 PID: 9623 Comm: trinity-c2 Tainted: G    BU         3.18.0-dirty #15
Hardware name: Google Tegra210 Smaug Rev 1,3+ (DT)
Call trace:
[<ffffffc000209c98>] dump_backtrace+0x0/0x1ac arch/arm64/kernel/traps.c:90
[<ffffffc000209e54>] show_stack+0x10/0x1c arch/arm64/kernel/traps.c:171
[<     inline     >] __dump_stack lib/dump_stack.c:15
[<ffffffc000f18dc4>] dump_stack+0x7c/0xd0 lib/dump_stack.c:50
[<     inline     >] print_address_description mm/kasan/report.c:147
[<     inline     >] kasan_report_error mm/kasan/report.c:236
[<ffffffc000373dcc>] kasan_report+0x380/0x4b8 mm/kasan/report.c:259
[<     inline     >] check_memory_region mm/kasan/kasan.c:264
[<ffffffc00037352c>] __asan_load8+0x20/0x70 mm/kasan/kasan.c:507
[<ffffffc0005b9624>] memcpy_fromiovec+0x5c/0x114 lib/iovec.c:15
[<     inline     >] memcpy_from_msg include/linux/skbuff.h:2667
[<ffffffc000ddeba0>] ping_common_sendmsg+0x50/0x108 net/ipv4/ping.c:674
[<ffffffc000dded30>] ping_v4_sendmsg+0xd8/0x698 net/ipv4/ping.c:714
[<ffffffc000dc91dc>] inet_sendmsg+0xe0/0x12c net/ipv4/af_inet.c:749
[<     inline     >] __sock_sendmsg_nosec net/socket.c:624
[<     inline     >] __sock_sendmsg net/socket.c:632
[<ffffffc000cab61c>] sock_sendmsg+0x124/0x164 net/socket.c:643
[<     inline     >] SYSC_sendto net/socket.c:1797
[<ffffffc000cad270>] SyS_sendto+0x178/0x1d8 net/socket.c:1761

CVE-2016-8399

BUG= chromium:681957 
TEST=Build and run

Change-Id: Ie0446d9dbafdf2c81e03c045e22caf727417533b
Reported-by: Qidan He <i@flanker017.me>
Fixes: c319b4d76b9e ("net: ipv4: add IPPROTO_ICMP socket kind")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Guenter Roeck <groeck@chromium.org>
(cherry picked from commit 0eab121ef875)
[backport: icmp header length is fixed]
(cherry picked from commit 91ecac0cc4a9b97cb4cb5041818e0f9de68d9266)
Signed-off-by: Guenter Roeck <groeck@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/428991
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>

[modify] https://crrev.com/8b324418f58b6baa6dbdc673a0c194b24891dc8f/net/ipv4/ping.c

Comment 7 by groeck@chromium.org, Jan 19 2017

Labels: Merge-Request-56

Comment 8 by groeck@chromium.org, Jan 19 2017

Status: Fixed (was: Assigned)
Project Member

Comment 9 by sheriffbot@chromium.org, Jan 19 2017

Labels: -Merge-Request-56 Merge-Review-56 Hotlist-Merge-Review
This bug requires manual review: We are only 11 days from stable.
Please contact the milestone owner if you have questions.
Owners: amineer@(clank), cmasso@(bling), gkihumba@(cros), bustamante@(desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Comment 10 by awhalley@chromium.org, Jan 24 2017

Labels: Release-0-M56

Comment 11 by groeck@chromium.org, Jan 30 2017

Cc: gkihumba@chromium.org
#9, #10: Is it safe to assume that this patch is not needed/wanted in R56 ? Can I remove the M56 labels ?
Project Member

Comment 12 by sheriffbot@chromium.org, Apr 27 2017

Labels: -Restrict-View-SecurityNotify allpublic
This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Comment 13 by dchan@google.com, May 30 2017

Labels: VerifyIn-60

Comment 14 by dchan@chromium.org, Aug 1 2017

Labels: VerifyIn-61

Comment 15 by dchan@chromium.org, Jan 22 2018

Status: Archived (was: Fixed)
►

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