CVE-2016-7916

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.

CVSS v3.0 5.5 MEDIUM
CVSS v2.0 4.7 MEDIUM

5.5^/10

CVSS v3.0 : MEDIUM

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

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

4.7^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:M/Au:N/C:C/I:N/A:N

Exploitability : 3.4 / Impact : 6.9

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://bugzilla.kernel.org/show_bug.cgi?id=116461	Issue Tracking
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8148a73c9901a8794a50f950083c00ccf97d43b3	Issue Tracking Patch Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.4	Release Notes Vendor Advisory
https://forums.grsecurity.net/viewtopic.php?f=3&t=4363	Issue Tracking
https://github.com/torvalds/linux/commit/8148a73c9901a8794a50f950083c00ccf97d43b3	Issue Tracking Patch Third Party Advisory
http://source.android.com/security/bulletin/2016-11-01.html	Third Party Advisory
http://www.securityfocus.com/bid/94138	Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-3159-2
http://www.ubuntu.com/usn/USN-3159-1

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Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Information

Published : 2016-11-15 21:59

Updated : 2017-01-17 18:59

NVD link : CVE-2016-7916

Mitre link : CVE-2016-7916

JSON object : View

CWE

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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Products Affected

linux

linux_kernel

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