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.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8148a73c9901a8794a50f950083c00ccf97d43b3

http://source.android.com/security/bulletin/2016-11-01.html

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.4

http://www.securityfocus.com/bid/94138

http://www.ubuntu.com/usn/USN-3159-1

http://www.ubuntu.com/usn/USN-3159-2

https://bugzilla.kernel.org/show_bug.cgi?id=116461

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

https://github.com/torvalds/linux/commit/8148a73c9901a8794a50f950083c00ccf97d43b3

Details

Risk Information

CVSS v2

CVSS v3