National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2016-9576 Detail

Current Description

The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel before 4.8.14 does not properly restrict the type of iterator, which allows local users to read or write to arbitrary kernel memory locations or cause a denial of service (use-after-free) by leveraging access to a /dev/sg device.

Source:  MITRE
Description Last Modified:  12/28/2016
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.8 HIGH
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 1.8

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

CVSS v2.0 Severity and Metrics:

Base Score: 7.2 HIGH
Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

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=a0ac402cfcdc904f9772e1762b3fda112dcc56a0 Patch Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00040.html
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00041.html
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00057.html
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00062.html
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00072.html
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00075.html
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00081.html
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00088.html
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00091.html
http://rhn.redhat.com/errata/RHSA-2017-0817.html
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14 Release Notes
http://www.openwall.com/lists/oss-security/2016/12/08/19 Mailing List Patch
http://www.securityfocus.com/bid/94821
https://access.redhat.com/errata/RHSA-2017:1842
https://access.redhat.com/errata/RHSA-2017:2077
https://access.redhat.com/errata/RHSA-2017:2669
https://bugzilla.redhat.com/show_bug.cgi?id=1403145 Issue Tracking
https://github.com/torvalds/linux/commit/a0ac402cfcdc904f9772e1762b3fda112dcc56a0 Patch Vendor Advisory

Technical Details

Vulnerability Type (View All)

Change History

6 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-9576
NVD Published Date:
12/28/2016
NVD Last Modified:
01/04/2018