Vulnerability Details : CVE-2016-7914
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.
Published
2016-11-16 05:59:09
Updated
2018-01-05 02:31:16
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2016-7914
Probability of exploitation activity in the next 30 days: 0.07%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 29 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2016-7914
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
7.1
|
HIGH | AV:N/AC:M/Au:N/C:C/I:N/A:N |
8.6
|
6.9
|
NIST |
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2016-7914
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
-
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-7914
-
https://github.com/torvalds/linux/commit/8d4a2ec1e0b41b0cf9a0c5cd4511da7f8e4f3de2
assoc_array: don't call compare_object() on a node · torvalds/linux@8d4a2ec · GitHubIssue Tracking;Patch;Third Party Advisory
-
http://rhn.redhat.com/errata/RHSA-2016-2574.html
RHSA-2016:2574 - Security Advisory - Red Hat Customer Portal
-
http://www.securityfocus.com/bid/94138
Linux Kernel Multiple Information Disclosure VulnerabilitiesThird Party Advisory;VDB Entry
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http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.3
Release Notes
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http://source.android.com/security/bulletin/2016-11-01.html
Android Security Bulletin—November 2016 | Android Open Source ProjectThird Party Advisory
-
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8d4a2ec1e0b41b0cf9a0c5cd4511da7f8e4f3de2
kernel/git/torvalds/linux.git - Linux kernel source treeIssue Tracking;Patch;Third Party Advisory
Products affected by CVE-2016-7914
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*