CVE-2016-7916

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.04%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://source.android.com/security/bulletin/2016-11-01.html third party advisory
https://bugzilla.kernel.org/show_bug.cgi?id=116461 issue tracking
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.4 release notes vendor advisory
http://www.ubuntu.com/usn/USN-3159-1 vendor advisory
https://forums.grsecurity.net/viewtopic.php?f=3&t=4363 issue tracking
http://www.ubuntu.com/usn/USN-3159-2 vendor advisory
http://www.securityfocus.com/bid/94138 vdb entry third party advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8148a73c9901a8794a50f950083c00ccf97d43b3 issue tracking third party advisory patch
https://github.com/torvalds/linux/commit/8148a73c9901a8794a50f950083c00ccf97d43b3 issue tracking third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2016-7916?
CVE-2016-7916 has been scored as a medium severity vulnerability.
How to fix CVE-2016-7916?
To fix CVE-2016-7916, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-7916 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-7916 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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