CVE-2016-7916

MEDIUM

Linux Kernel < 4.5.3 - Race Condition

Title source: rule

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.

References (9)

[Issue Tracking, Patch, Third Party Advisory] http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8148a73c9901a8794a50f950083c00ccf97d43b3

[Third Party Advisory] http://source.android.com/security/bulletin/2016-11-01.html

[Release Notes, Vendor Advisory] http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.4

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/94138

[Vendor Advisory] http://www.ubuntu.com/usn/USN-3159-1

[Vendor Advisory] http://www.ubuntu.com/usn/USN-3159-2

[Issue Tracking] https://bugzilla.kernel.org/show_bug.cgi?id=116461

[Issue Tracking] https://forums.grsecurity.net/viewtopic.php?f=3&t=4363

[Issue Tracking, Patch, Third Party Advisory] https://github.com/torvalds/linux/commit/8148a73c9901a8794a50f950083c00ccf97d43b3

View Patch ZIP pw:eip

Scores

CVSS v3 5.5

EPSS 0.0005

EPSS Percentile 16.4%

Attack Vector LOCAL

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Classification

CWE

CWE-362

Status published

Affected Products (2)

linux/linux_kernel < 4.5.3

n/a/n/a

Timeline

Published Nov 16, 2016

Tracked Since Feb 18, 2026