CVE-2016-7916 (retired)

Priority
Description
Race condition in the environ_read function in fs/proc/base.c in the Linux
kernel before 4.5.4 allows local users to obtain sensitive information from
kernel memory by reading a /proc/*/environ file during a process-setup time
interval in which environment-variable copying is incomplete.
Ubuntu-Description
It was discovered that a race condition existed in the procfs environ_read
function in the Linux kernel, leading to an integer underflow. A local
attacker could use this to expose sensitive information (kernel memory).
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
Package
Source: linux (LP Ubuntu Debian)
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):released (3.2.0-119.162)
Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-24.43)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2Fixed by 8148a73c9901a8794a50f950083c00ccf97d43b3
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was released [3.2.0-1680.107])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1001.10)
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (abandoned)
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1003.3)
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (abandoned)
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.8.0-36.36~16.04.1)
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.8.0-36.36~16.04.1)
Package
linux-krillin:ignored (was needed now end-of-life)
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [abandoned])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [abandoned])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [abandoned])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [end-of-life])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Patches:
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [end-of-life])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [end-of-life])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):released (3.13.0-106.153~precise1)
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (abandoned)
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [abandoned])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-1012.16)
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-1015.18)
Package
Upstream:released (4.6~rc7)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was released [3.2.0-1497.124])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
linux-vegetahd:ignored (was needed now end-of-life)
More Information

Updated: 2019-05-15 17:19:32 UTC (commit 2d71aefac924bf16479c12958688c37878e881eb)