PublicDateAtUSN: 2016-08-18
Candidate: CVE-2016-6828
PublicDate: 2016-10-16 21:59:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6828
 http://www.openwall.com/lists/oss-security/2016/08/18/6
 https://ubuntu.com/security/notices/USN-3097-1
 https://ubuntu.com/security/notices/USN-3098-2
 https://ubuntu.com/security/notices/USN-3098-1
 https://ubuntu.com/security/notices/USN-3099-4
 https://ubuntu.com/security/notices/USN-3099-2
 https://ubuntu.com/security/notices/USN-3099-3
 https://ubuntu.com/security/notices/USN-3099-1
 https://ubuntu.com/security/notices/USN-3097-2
Description:
 The tcp_check_send_head function in include/net/tcp.h in the Linux kernel
 before 4.7.5 does not properly maintain certain SACK state after a failed
 data copy, which allows local users to cause a denial of service
 (tcp_xmit_retransmit_queue use-after-free and system crash) via a crafted
 SACK option.
Ubuntu-Description:
 Marco Grassi discovered a use-after-free condition could occur in the TCP
 retransmit queue handling code in the Linux kernel. A local attacker could
 use this to cause a denial of service (system crash) or possibly execute
 arbitrary code.
Notes:
 jdstrand> android kernels (flo, goldfish, grouper, maguro, mako and manta) are
  not supported on the Ubuntu Touch 14.10 and earlier preview kernels
 jdstrand> linux-lts-saucy no longer receives official support
 jdstrand> linux-lts-quantal no longer receives official support
Bugs:
Priority: medium
Discovered-by: Marco Grassi
Assigned-to:
CVSS:
 nvd: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H [5.5 MEDIUM]

Patches_linux:
 break-fix: 6859d49475d4f32abe640372117e4b687906e6b6 bb1fceca22492109be12640d49f5ea5a544c6bb4
upstream_linux: released (4.8~rc5)
precise_linux: released (3.2.0-111.153)
precise/esm_linux: released (3.2.0-111.153)
trusty_linux: released (3.13.0-98.145)
trusty/esm_linux: released (3.13.0-98.145)
vivid/ubuntu-core_linux: released (3.19.0-71.79)
vivid/stable-phone-overlay_linux: DNE
xenial_linux: released (4.4.0-42.62)
esm-infra/xenial_linux: released (4.4.0-42.62)
yakkety_linux: not-affected (4.8.0-11.12)
zesty_linux: not-affected (4.8.0-22.24)
devel_linux: not-affected (4.10.0-19.21)

Patches_linux-ti-omap4:
upstream_linux-ti-omap4: released (4.8~rc5)
precise_linux-ti-omap4: released (3.2.0-1489.116)
precise/esm_linux-ti-omap4: DNE (precise was released [3.2.0-1489.116])
trusty_linux-ti-omap4: DNE
trusty/esm_linux-ti-omap4: DNE
vivid/ubuntu-core_linux-ti-omap4: DNE
vivid/stable-phone-overlay_linux-ti-omap4: DNE
xenial_linux-ti-omap4: DNE
yakkety_linux-ti-omap4: DNE
zesty_linux-ti-omap4: DNE
devel_linux-ti-omap4: DNE

Patches_linux-linaro-omap:
upstream_linux-linaro-omap: released (4.8~rc5)
precise_linux-linaro-omap: ignored (abandoned)
precise/esm_linux-linaro-omap: DNE (precise was ignored [abandoned])
trusty_linux-linaro-omap: DNE
trusty/esm_linux-linaro-omap: DNE
vivid/ubuntu-core_linux-linaro-omap: DNE
vivid/stable-phone-overlay_linux-linaro-omap: DNE
xenial_linux-linaro-omap: DNE
yakkety_linux-linaro-omap: DNE
zesty_linux-linaro-omap: DNE
devel_linux-linaro-omap: DNE

Patches_linux-linaro-shared:
upstream_linux-linaro-shared: released (4.8~rc5)
precise_linux-linaro-shared: ignored (abandoned)
precise/esm_linux-linaro-shared: DNE (precise was ignored [abandoned])
trusty_linux-linaro-shared: DNE
trusty/esm_linux-linaro-shared: DNE
vivid/ubuntu-core_linux-linaro-shared: DNE
vivid/stable-phone-overlay_linux-linaro-shared: DNE
xenial_linux-linaro-shared: DNE
yakkety_linux-linaro-shared: DNE
zesty_linux-linaro-shared: DNE
devel_linux-linaro-shared: DNE

Patches_linux-linaro-vexpress:
upstream_linux-linaro-vexpress: released (4.8~rc5)
precise_linux-linaro-vexpress: ignored (abandoned)
precise/esm_linux-linaro-vexpress: DNE (precise was ignored [abandoned])
trusty_linux-linaro-vexpress: DNE
trusty/esm_linux-linaro-vexpress: DNE
vivid/ubuntu-core_linux-linaro-vexpress: DNE
vivid/stable-phone-overlay_linux-linaro-vexpress: DNE
xenial_linux-linaro-vexpress: DNE
yakkety_linux-linaro-vexpress: DNE
zesty_linux-linaro-vexpress: DNE
devel_linux-linaro-vexpress: DNE

Patches_linux-qcm-msm:
upstream_linux-qcm-msm: released (4.8~rc5)
precise_linux-qcm-msm: ignored (abandoned)
precise/esm_linux-qcm-msm: DNE (precise was ignored [abandoned])
trusty_linux-qcm-msm: DNE
trusty/esm_linux-qcm-msm: DNE
vivid/ubuntu-core_linux-qcm-msm: DNE
vivid/stable-phone-overlay_linux-qcm-msm: DNE
xenial_linux-qcm-msm: DNE
yakkety_linux-qcm-msm: DNE
zesty_linux-qcm-msm: DNE
devel_linux-qcm-msm: DNE

Tags_linux-armadaxp: not-ue
Patches_linux-armadaxp:
upstream_linux-armadaxp: released (4.8~rc5)
precise_linux-armadaxp: released (3.2.0-1674.100)
precise/esm_linux-armadaxp: DNE (precise was released [3.2.0-1674.100])
trusty_linux-armadaxp: DNE
trusty/esm_linux-armadaxp: DNE
vivid/ubuntu-core_linux-armadaxp: DNE
vivid/stable-phone-overlay_linux-armadaxp: DNE
xenial_linux-armadaxp: DNE
yakkety_linux-armadaxp: DNE
zesty_linux-armadaxp: DNE
devel_linux-armadaxp: DNE

Tags_linux-lts-quantal: not-ue
Patches_linux-lts-quantal:
upstream_linux-lts-quantal: released (4.8~rc5)
precise_linux-lts-quantal: ignored (end-of-life)
precise/esm_linux-lts-quantal: DNE (precise was ignored [end-of-life])
trusty_linux-lts-quantal: DNE
trusty/esm_linux-lts-quantal: DNE
vivid/ubuntu-core_linux-lts-quantal: DNE
vivid/stable-phone-overlay_linux-lts-quantal: DNE
xenial_linux-lts-quantal: DNE
yakkety_linux-lts-quantal: DNE
zesty_linux-lts-quantal: DNE
devel_linux-lts-quantal: DNE

Patches_linux-lts-raring:
upstream_linux-lts-raring: released (4.8~rc5)
precise_linux-lts-raring: ignored (end-of-life)
precise/esm_linux-lts-raring: DNE (precise was ignored [end-of-life])
trusty_linux-lts-raring: DNE
trusty/esm_linux-lts-raring: DNE
vivid/ubuntu-core_linux-lts-raring: DNE
vivid/stable-phone-overlay_linux-lts-raring: DNE
xenial_linux-lts-raring: DNE
yakkety_linux-lts-raring: DNE
zesty_linux-lts-raring: DNE
devel_linux-lts-raring: DNE

Tags_linux-lts-saucy: not-ue
Patches_linux-lts-saucy:
upstream_linux-lts-saucy: released (4.8~rc5)
precise_linux-lts-saucy: ignored (end-of-life)
precise/esm_linux-lts-saucy: DNE (precise was ignored [end-of-life])
trusty_linux-lts-saucy: DNE
trusty/esm_linux-lts-saucy: DNE
vivid/ubuntu-core_linux-lts-saucy: DNE
vivid/stable-phone-overlay_linux-lts-saucy: DNE
xenial_linux-lts-saucy: DNE
yakkety_linux-lts-saucy: DNE
zesty_linux-lts-saucy: DNE
devel_linux-lts-saucy: DNE

Patches_linux-lts-trusty:
upstream_linux-lts-trusty: released (4.8~rc5)
precise_linux-lts-trusty: released (3.13.0-98.145~precise1)
precise/esm_linux-lts-trusty: released (3.13.0-98.145~precise1)
trusty_linux-lts-trusty: DNE
trusty/esm_linux-lts-trusty: DNE
vivid/ubuntu-core_linux-lts-trusty: DNE
vivid/stable-phone-overlay_linux-lts-trusty: DNE
xenial_linux-lts-trusty: DNE
yakkety_linux-lts-trusty: DNE
zesty_linux-lts-trusty: DNE
devel_linux-lts-trusty: DNE

Patches_linux-goldfish:
upstream_linux-goldfish: released (4.8~rc5)
precise_linux-goldfish: DNE
precise/esm_linux-goldfish: DNE
trusty_linux-goldfish: ignored
trusty/esm_linux-goldfish: DNE (trusty was ignored)
vivid/ubuntu-core_linux-goldfish: DNE
vivid/stable-phone-overlay_linux-goldfish: DNE
xenial_linux-goldfish: ignored (abandoned)
yakkety_linux-goldfish: ignored (abandoned)
zesty_linux-goldfish: ignored (abandoned)
devel_linux-goldfish: DNE

Patches_linux-grouper:
upstream_linux-grouper: released (4.8~rc5)
precise_linux-grouper: DNE
precise/esm_linux-grouper: DNE
trusty_linux-grouper: ignored
trusty/esm_linux-grouper: DNE (trusty was ignored)
vivid/ubuntu-core_linux-grouper: DNE
vivid/stable-phone-overlay_linux-grouper: DNE
xenial_linux-grouper: DNE
yakkety_linux-grouper: DNE
zesty_linux-grouper: DNE
devel_linux-grouper: DNE

Patches_linux-maguro:
upstream_linux-maguro: released (4.8~rc5)
precise_linux-maguro: DNE
precise/esm_linux-maguro: DNE
trusty_linux-maguro: ignored
trusty/esm_linux-maguro: DNE (trusty was ignored)
vivid/ubuntu-core_linux-maguro: DNE
vivid/stable-phone-overlay_linux-maguro: DNE
xenial_linux-maguro: DNE
yakkety_linux-maguro: DNE
zesty_linux-maguro: DNE
devel_linux-maguro: DNE

Patches_linux-mako:
upstream_linux-mako: released (4.8~rc5)
precise_linux-mako: DNE
precise/esm_linux-mako: DNE
trusty_linux-mako: ignored
trusty/esm_linux-mako: DNE (trusty was ignored)
vivid/ubuntu-core_linux-mako: DNE
vivid/stable-phone-overlay_linux-mako: ignored (abandoned)
xenial_linux-mako: ignored (abandoned)
yakkety_linux-mako: ignored (abandoned)
zesty_linux-mako: DNE
devel_linux-mako: DNE

Patches_linux-manta:
upstream_linux-manta: released (4.8~rc5)
precise_linux-manta: DNE
precise/esm_linux-manta: DNE
trusty_linux-manta: ignored
trusty/esm_linux-manta: DNE (trusty was ignored)
vivid/ubuntu-core_linux-manta: DNE
vivid/stable-phone-overlay_linux-manta: DNE
xenial_linux-manta: DNE
yakkety_linux-manta: DNE
zesty_linux-manta: DNE
devel_linux-manta: DNE

Patches_linux-flo:
upstream_linux-flo: released (4.8~rc5)
precise_linux-flo: DNE
precise/esm_linux-flo: DNE
trusty_linux-flo: ignored
trusty/esm_linux-flo: DNE (trusty was ignored)
vivid/ubuntu-core_linux-flo: DNE
vivid/stable-phone-overlay_linux-flo: ignored (abandoned)
xenial_linux-flo: ignored (abandoned)
yakkety_linux-flo: ignored (abandoned)
zesty_linux-flo: DNE
devel_linux-flo: DNE

Patches_linux-raspi2:
upstream_linux-raspi2: released (4.8~rc5)
precise_linux-raspi2: DNE
precise/esm_linux-raspi2: DNE
trusty_linux-raspi2: DNE
trusty/esm_linux-raspi2: DNE
vivid/ubuntu-core_linux-raspi2: ignored (was needed now end-of-life)
vivid/stable-phone-overlay_linux-raspi2: DNE
xenial_linux-raspi2: released (4.4.0-1027.33)
yakkety_linux-raspi2: not-affected (4.8.0-1012.14)
zesty_linux-raspi2: not-affected (4.8.0-1013.15)
devel_linux-raspi2: not-affected (4.10.0-1004.6)

Patches_linux-lts-utopic:
upstream_linux-lts-utopic: released (4.8~rc5)
precise_linux-lts-utopic: DNE
precise/esm_linux-lts-utopic: DNE
trusty_linux-lts-utopic: ignored (out of standard support)
trusty/esm_linux-lts-utopic: DNE (trusty was ignored [out of standard support])
vivid/ubuntu-core_linux-lts-utopic: DNE
vivid/stable-phone-overlay_linux-lts-utopic: DNE
xenial_linux-lts-utopic: DNE
yakkety_linux-lts-utopic: DNE
zesty_linux-lts-utopic: DNE
devel_linux-lts-utopic: DNE

Patches_linux-lts-vivid:
upstream_linux-lts-vivid: released (4.8~rc5)
precise_linux-lts-vivid: DNE
precise/esm_linux-lts-vivid: DNE
trusty_linux-lts-vivid: released (3.19.0-71.79~14.04.1)
trusty/esm_linux-lts-vivid: DNE (trusty was released [3.19.0-71.79~14.04.1])
vivid/ubuntu-core_linux-lts-vivid: DNE
vivid/stable-phone-overlay_linux-lts-vivid: DNE
xenial_linux-lts-vivid: DNE
yakkety_linux-lts-vivid: DNE
zesty_linux-lts-vivid: DNE
devel_linux-lts-vivid: DNE

Patches_linux-lts-wily:
upstream_linux-lts-wily: released (4.8~rc5)
precise_linux-lts-wily: DNE
precise/esm_linux-lts-wily: DNE
trusty_linux-lts-wily: ignored (out of standard support)
trusty/esm_linux-lts-wily: DNE (trusty was ignored [out of standard support])
vivid/ubuntu-core_linux-lts-wily: DNE
vivid/stable-phone-overlay_linux-lts-wily: DNE
xenial_linux-lts-wily: DNE
yakkety_linux-lts-wily: DNE
zesty_linux-lts-wily: DNE
devel_linux-lts-wily: DNE

Patches_linux-lts-xenial:
upstream_linux-lts-xenial: released (4.8~rc5)
precise_linux-lts-xenial: DNE
precise/esm_linux-lts-xenial: DNE
trusty_linux-lts-xenial: released (4.4.0-42.62~14.04.1)
trusty/esm_linux-lts-xenial: released (4.4.0-42.62~14.04.1)
vivid/ubuntu-core_linux-lts-xenial: DNE
vivid/stable-phone-overlay_linux-lts-xenial: DNE
xenial_linux-lts-xenial: DNE
yakkety_linux-lts-xenial: DNE
zesty_linux-lts-xenial: DNE
devel_linux-lts-xenial: DNE

Patches_linux-snapdragon:
upstream_linux-snapdragon: released (4.8~rc5)
precise_linux-snapdragon: DNE
precise/esm_linux-snapdragon: DNE
trusty_linux-snapdragon: DNE
trusty/esm_linux-snapdragon: DNE
vivid/ubuntu-core_linux-snapdragon: DNE
vivid/stable-phone-overlay_linux-snapdragon: DNE
xenial_linux-snapdragon: released (4.4.0-1030.33)
yakkety_linux-snapdragon: not-affected (4.4.0-1029.32)
zesty_linux-snapdragon: not-affected (4.4.0-1029.32)
devel_linux-snapdragon: not-affected (4.4.0-1050.54)

Patches_linux-aws:
upstream_linux-aws: released (4.8~rc5)
precise_linux-aws: DNE
precise/esm_linux-aws: DNE
trusty_linux-aws: not-affected (4.4.0-1002.2)
trusty/esm_linux-aws: not-affected (4.4.0-1002.2)
vivid/ubuntu-core_linux-aws: DNE
vivid/stable-phone-overlay_linux-aws: DNE
xenial_linux-aws: not-affected (4.4.0-1001.10)
esm-infra/xenial_linux-aws: not-affected (4.4.0-1001.10)
yakkety_linux-aws: DNE
zesty_linux-aws: DNE
devel_linux-aws: DNE

Patches_linux-hwe-edge:
upstream_linux-hwe-edge: released (4.8~rc5)
precise_linux-hwe-edge: DNE
precise/esm_linux-hwe-edge: DNE
trusty_linux-hwe-edge: DNE
trusty/esm_linux-hwe-edge: DNE
vivid/ubuntu-core_linux-hwe-edge: DNE
vivid/stable-phone-overlay_linux-hwe-edge: DNE
xenial_linux-hwe-edge: not-affected (4.8.0-36.36~16.04.1)
esm-infra/xenial_linux-hwe-edge: not-affected (4.8.0-36.36~16.04.1)
yakkety_linux-hwe-edge: DNE
zesty_linux-hwe-edge: DNE
devel_linux-hwe-edge: DNE

Patches_linux-hwe:
upstream_linux-hwe: released (4.8~rc5)
precise_linux-hwe: DNE
precise/esm_linux-hwe: DNE
trusty_linux-hwe: DNE
trusty/esm_linux-hwe: DNE
vivid/ubuntu-core_linux-hwe: DNE
vivid/stable-phone-overlay_linux-hwe: DNE
xenial_linux-hwe: not-affected (4.8.0-36.36~16.04.1)
esm-infra/xenial_linux-hwe: not-affected (4.8.0-36.36~16.04.1)
yakkety_linux-hwe: DNE
zesty_linux-hwe: DNE
devel_linux-hwe: DNE

Patches_linux-gke:
upstream_linux-gke: released (4.8~rc5)
precise_linux-gke: DNE
precise/esm_linux-gke: DNE
trusty_linux-gke: DNE
trusty/esm_linux-gke: DNE
vivid/ubuntu-core_linux-gke: DNE
vivid/stable-phone-overlay_linux-gke: DNE
xenial_linux-gke: not-affected (4.4.0-1003.3)
yakkety_linux-gke: DNE
zesty_linux-gke: DNE
devel_linux-gke: DNE