National Vulnerability Database

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    Vulnerabilities Detail

CVE-2016-7914 Detail

Description

The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel before 4.5.3 does not check whether a slot is a leaf, which allows local users to obtain sensitive information from kernel memory or cause a denial of service (invalid pointer dereference and out-of-bounds read) via an application that uses associative-array data structures, as demonstrated by the keyutils test suite.

Source:  MITRE
Description Last Modified:  11/16/2016

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.5 MEDIUM
Vector: AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 1.8

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 7.1 HIGH
Vector: (AV:N/AC:M/Au:N/C:C/I:N/A:N) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 8.6

Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): None
Availability (A): None
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8d4a2ec1e0b41b0cf9a0c5cd4511da7f8e4f3de2 Issue Tracking Patch Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-2574.html
http://source.android.com/security/bulletin/2016-11-01.html Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.3 Release Notes
http://www.securityfocus.com/bid/94138 Third Party Advisory VDB Entry
https://github.com/torvalds/linux/commit/8d4a2ec1e0b41b0cf9a0c5cd4511da7f8e4f3de2 Issue Tracking Patch Third Party Advisory

Technical Details

Vulnerability Type (View All)

Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-7914
NVD Published Date:
11/16/2016
NVD Last Modified:
01/04/2018