CVE-2016-4558
Published: 23 May 2016
The BPF subsystem in the Linux kernel before 4.5.5 mishandles reference counts, which allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a crafted application on (1) a system with more than 32 Gb of memory, related to the program reference count or (2) a 1 Tb system, related to the map reference count.
From the Ubuntu Security Team
Jann Horn discovered that the extended Berkeley Packet Filter (eBPF) implementation in the Linux kernel could overflow reference counters on systems with more than 32GB of physical ram and with RLIMIT_MEMLOCK set to infinite. A local unprivileged attacker could use to create a use-after- free situation, causing a denial of service (system crash) or possibly gain 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 | made exploitable by unpriv bpf |
Priority
Status
Package | Release | Status |
---|---|---|
linux Launchpad, Ubuntu, Debian |
precise |
Not vulnerable
|
trusty |
Not vulnerable
|
|
wily |
Not vulnerable
|
|
xenial |
Released
(4.4.0-24.43)
|
|
yakkety |
Not vulnerable
(4.4.0-23.41)
|
|
upstream |
Released
(4.6~rc7)
|
|
Patches: Introduced by 1be7f75d1668d6296b80bf35dcf6762393530afc |
||
linux-armadaxp Launchpad, Ubuntu, Debian |
precise |
Not vulnerable
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-aws Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Not vulnerable
(4.4.0-1002.2)
|
|
xenial |
Not vulnerable
(4.4.0-1001.10)
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-flo Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
wily |
Not vulnerable
|
|
xenial |
Not vulnerable
|
|
yakkety |
Not vulnerable
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-gke Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
|
|
xenial |
Not vulnerable
(4.4.0-1003.3)
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
wily |
Not vulnerable
|
|
xenial |
Not vulnerable
|
|
yakkety |
Not vulnerable
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-grouper Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-hwe Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
|
|
xenial |
Not vulnerable
(4.8.0-36.36~16.04.1)
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
|
|
xenial |
Not vulnerable
(4.8.0-36.36~16.04.1)
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-linaro-omap Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-linaro-shared Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-linaro-vexpress Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-lts-quantal Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-lts-raring Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-lts-saucy Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-lts-trusty Launchpad, Ubuntu, Debian |
precise |
Not vulnerable
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was not-affected)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was not-affected)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was not-affected)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Released
(4.4.0-24.43~14.04.1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-maguro Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-mako Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
wily |
Not vulnerable
|
|
xenial |
Not vulnerable
|
|
yakkety |
Not vulnerable
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-manta Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
wily |
Not vulnerable
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-qcm-msm Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
|
|
wily |
Not vulnerable
|
|
xenial |
Released
(4.4.0-1012.16)
|
|
yakkety |
Not vulnerable
(4.4.0-1011.14)
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Released
(4.4.0-1015.18)
|
|
yakkety |
Not vulnerable
(4.4.0-1014.16)
|
|
upstream |
Released
(4.6~rc7)
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
precise |
Not vulnerable
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
upstream |
Released
(4.6~rc7)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.0 |
Attack vector | Local |
Attack complexity | High |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4558
- https://git.kernel.org/linus/92117d8443bc5afacc8d5ba82e541946310f106e
- http://www.openwall.com/lists/oss-security/2016/05/06/7
- https://ubuntu.com/security/notices/USN-3005-1
- https://ubuntu.com/security/notices/USN-3006-1
- https://ubuntu.com/security/notices/USN-3007-1
- NVD
- Launchpad
- Debian