CVE-2016-4997
Published: 24 June 2016
The compat IPT_SO_SET_REPLACE and IP6T_SO_SET_REPLACE setsockopt implementations in the netfilter subsystem in the Linux kernel before 4.6.3 allow local users to gain privileges or cause a denial of service (memory corruption) by leveraging in-container root access to provide a crafted offset value that triggers an unintended decrement.
From the Ubuntu Security Team
Jesse Hertz and Tim Newsham discovered that the Linux netfilter implementation did not correctly perform validation when handling 32 bit compatibility IPT_SO_SET_REPLACE events on 64 bit platforms. A local unprivileged attacker could use this to cause a denial of service (system crash) or execute arbitrary code with administrative privileges.
Notes
Author | Note |
---|---|
jdstrand | android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.10 and earlier preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support |
sbeattie | priority is negligible on precise's 3.2 kernels, as user namespaces are a privileged operation there. For xenial and linux-lts-xenial on trusty, this can be mitigated against by setting the kernel.unprivileged_userns_clone sysctl to 0 to disable userns support. When we fix the netfilter issue we will also add this sysctl to all other supported kernels to allow disabling unprivileged user namespaces. Disabling user namespace may impact chromium-browser, lxc, lxd, docker, and other tools. |
Priority
Status
Package | Release | Status |
---|---|---|
linux Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.10.0-19.21)
|
precise |
Released
(3.2.0-128.173)
|
|
trusty |
Released
(3.13.0-91.138)
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Released
(4.2.0-41.48)
|
|
xenial |
Released
(4.4.0-28.47)
|
|
yakkety |
Not vulnerable
(4.4.0-28.47)
|
|
zesty |
Not vulnerable
(4.8.0-22.24)
|
|
Patches: Introduced by 2722971cbe831117686039d5c334f2c0f560be13 Introduced by 2722971cbe831117686039d5c334f2c0f560be13 Introduced by 2722971cbe831117686039d5c334f2c0f560be13 |
||
linux-armadaxp Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
(precise was needed)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-aws Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Not vulnerable
(4.4.0-1002.2)
|
|
upstream |
Released
(4.7~rc1)
|
|
xenial |
Not vulnerable
(4.4.0-1001.10)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-azure Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Not vulnerable
(4.15.0-1023.24~14.04.1)
|
|
upstream |
Released
(4.7~rc1)
|
|
xenial |
Not vulnerable
(4.11.0-1009.9)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-euclid Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
xenial |
Not vulnerable
(4.4.0-9019.20)
|
|
zesty |
Does not exist
|
|
linux-flo Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Ignored
(reached end-of-life)
|
|
xenial |
Ignored
(abandoned)
|
|
yakkety |
Ignored
(abandoned)
|
|
zesty |
Does not exist
|
|
linux-gcp Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
xenial |
Not vulnerable
(4.10.0-1004.4)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-gke Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
xenial |
Not vulnerable
(4.4.0-1003.3)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Ignored
(reached end-of-life)
|
|
xenial |
Ignored
(abandoned)
|
|
yakkety |
Ignored
(abandoned)
|
|
zesty |
Ignored
(abandoned)
|
|
linux-grouper Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-hwe Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
xenial |
Not vulnerable
(4.8.0-36.36~16.04.1)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
xenial |
Not vulnerable
(4.8.0-36.36~16.04.1)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-kvm Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
xenial |
Not vulnerable
(4.4.0-1004.9)
|
|
zesty |
Does not exist
|
|
linux-linaro-omap Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
(precise was ignored [abandoned])
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-linaro-shared Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
(precise was ignored [abandoned])
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-linaro-vexpress Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
(precise was ignored [abandoned])
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-quantal Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
(precise was ignored [end-of-life])
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-lts-raring Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
(precise was ignored [end-of-life])
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-saucy Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
(precise was ignored [end-of-life])
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-lts-trusty Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Released
(3.13.0-91.138~precise1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was released [3.16.0-76.98~14.04.1])
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was released [3.19.0-64.72~14.04.1])
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was released [4.2.0-41.48~14.04.1])
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Released
(4.4.0-28.47~14.04.1)
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-maguro Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-mako Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Ignored
(reached end-of-life)
|
|
xenial |
Ignored
(abandoned)
|
|
yakkety |
Ignored
(abandoned)
|
|
zesty |
Does not exist
|
|
linux-manta Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Ignored
(reached end-of-life)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-oem Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
xenial |
Not vulnerable
(4.13.0-1008.9)
|
|
zesty |
Does not exist
|
|
linux-qcm-msm Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
(precise was ignored [abandoned])
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.10.0-1004.6)
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Released
(4.2.0-1033.43)
|
|
xenial |
Released
(4.4.0-1016.22)
|
|
yakkety |
Not vulnerable
(4.4.0-1016.22)
|
|
zesty |
Not vulnerable
(4.8.0-1013.15)
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.4.0-1050.54)
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Released
(4.4.0-1019.22)
|
|
yakkety |
Not vulnerable
(4.4.0-1019.22)
|
|
zesty |
Not vulnerable
(4.4.0-1029.32)
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Does not exist
(precise was needed)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.7~rc1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.8 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4997
- https://marc.info/?l=oss-security&m=146679591706851&w=2
- https://ubuntu.com/security/notices/USN-3016-1
- https://ubuntu.com/security/notices/USN-3016-2
- https://ubuntu.com/security/notices/USN-3017-1
- https://ubuntu.com/security/notices/USN-3017-3
- https://ubuntu.com/security/notices/USN-3016-3
- https://ubuntu.com/security/notices/USN-3016-4
- https://ubuntu.com/security/notices/USN-3017-2
- https://ubuntu.com/security/notices/USN-3020-1
- https://ubuntu.com/security/notices/USN-3018-2
- https://ubuntu.com/security/notices/USN-3018-1
- https://ubuntu.com/security/notices/USN-3019-1
- https://ubuntu.com/security/notices/USN-3338-1
- NVD
- Launchpad
- Debian