CVE-2016-9576

HIGH

Linux Kernel < 4.4.38 - Use After Free

Title source: rule
STIX 2.1

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.

References (19)

Core 19
Core References
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00057.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00088.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00040.html
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:2669
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00072.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00041.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00062.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00075.html
Third Party Advisory vendor-advisory x_refsource_redhat
http://rhn.redhat.com/errata/RHSA-2017-0817.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00081.html
Issue Tracking, Third Party Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1403145
Release Notes, Vendor Advisory x_refsource_confirm
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14
Mailing List, Patch, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/12/08/19
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:2077
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:1842
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/94821
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00091.html

Scores

CVSS v3 7.8
EPSS 0.0006
EPSS Percentile 19.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (1)
linux/linux_kernel 4.0 - 4.4.38
Published Dec 28, 2016
Tracked Since Feb 18, 2026