CVE-2016-7917
Published: 16 November 2016
The nfnetlink_rcv_batch function in net/netfilter/nfnetlink.c in the Linux kernel before 4.5 does not check whether a batch message's length field is large enough, which allows local users to obtain sensitive information from kernel memory or cause a denial of service (infinite loop or out-of-bounds read) by leveraging the CAP_NET_ADMIN capability.
From the Ubuntu Security Team
It was discovered that the netfilter netlink implementation in the Linux kernel did not properly validate batch messages. A local attacker with the CAP_NET_ADMIN capability could use this to expose sensitive information or cause a denial of service.
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 | requires CAP_NET_ADMIN to exploit |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.10.0-19.21)
|
| precise |
Not vulnerable
|
|
| trusty |
Not vulnerable
|
|
| xenial |
Released
(4.4.0-79.100)
|
|
| yakkety |
Not vulnerable
(4.8.0-11.12)
|
|
| zesty |
Not vulnerable
(4.8.0-22.24)
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
Patches: Introduced by 9ea2aa8b7dba9e99544c4187cc298face254569f |
||
|
linux-armadaxp Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Not vulnerable
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
| 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)
|
|
| xenial |
Released
(4.4.0-1018.27)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Not vulnerable
(4.15.0-1023.24~14.04.1)
|
|
| xenial |
Not vulnerable
(4.11.0-1009.9)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-euclid Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| xenial |
Ignored
(was needed ESM criteria)
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-flo Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Not vulnerable
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| xenial |
Not vulnerable
(4.10.0-1004.4)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-gke Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Released
(4.4.0-1014.14)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Not vulnerable
|
|
| zesty |
Not vulnerable
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Not vulnerable
(4.8.0-36.36~16.04.1)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Not vulnerable
(4.8.0-36.36~16.04.1)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| xenial |
Not vulnerable
(4.4.0-1004.9)
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-linaro-omap Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Ignored
(end of life)
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-linaro-shared Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Ignored
(end of life)
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-linaro-vexpress Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Ignored
(end of life)
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-lts-quantal Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Ignored
(end of life)
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-lts-raring Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Ignored
(end of life)
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-lts-saucy Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Ignored
(end of life)
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Not vulnerable
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Does not exist
|
|
| trusty |
Ignored
(end of life, was needed)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Does not exist
|
|
| trusty |
Released
(4.4.0-79.100~14.04.1)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-maguro Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-mako Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Not vulnerable
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-manta Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| xenial |
Not vulnerable
(4.13.0-1008.9)
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-qcm-msm Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Ignored
(end of life)
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.10.0-1004.6)
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Released
(4.4.0-1057.64)
|
|
| yakkety |
Not vulnerable
(4.8.0-1012.14)
|
|
| zesty |
Not vulnerable
(4.8.0-1013.15)
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.4.0-1059.63)
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Released
(4.4.0-1059.63)
|
|
| yakkety |
Released
(4.4.0-1059.63)
|
|
| zesty |
Released
(4.4.0-1059.63)
|
|
| upstream |
Released
(4.5~rc6)
|
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| precise |
Not vulnerable
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc6)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.0 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7917
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c58d6c93680f28ac58984af61d0a7ebf4319c241
- http://source.android.com/security/bulletin/2016-11-01.html
- https://github.com/torvalds/linux/commit/c58d6c93680f28ac58984af61d0a7ebf4319c241
- https://ubuntu.com/security/notices/USN-3312-1
- https://ubuntu.com/security/notices/USN-3312-2
- NVD
- Launchpad
- Debian