CVE-2016-6828

5.5 MEDIUM
Published: October 16, 2016 Modified: May 06, 2026
View on NVD

Description

The tcp_check_send_head function in include/net/tcp.h in the Linux kernel before 4.7.5 does not properly maintain certain SACK state after a failed data copy, which allows local users to cause a denial of service (tcp_xmit_retransmit_queue use-after-free and system crash) via a crafted SACK option.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bb1fceca22492109be12640d49f5ea5a544c6bb4
Source: secalert@redhat.com
Issue Tracking Patch
http://rhn.redhat.com/errata/RHSA-2017-0036.html
Source: secalert@redhat.com
http://rhn.redhat.com/errata/RHSA-2017-0086.html
Source: secalert@redhat.com
http://rhn.redhat.com/errata/RHSA-2017-0091.html
Source: secalert@redhat.com
http://rhn.redhat.com/errata/RHSA-2017-0113.html
Source: secalert@redhat.com
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5
Source: secalert@redhat.com
Release Notes Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/08/15/1
Source: secalert@redhat.com
Exploit Third Party Advisory
http://www.securityfocus.com/bid/92452
Source: secalert@redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=1367091
Source: secalert@redhat.com
Issue Tracking Third Party Advisory
https://github.com/torvalds/linux/commit/bb1fceca22492109be12640d49f5ea5a544c6bb4
Source: secalert@redhat.com
Issue Tracking Patch
https://marcograss.github.io/security/linux/2016/08/18/cve-2016-6828-linux-kernel-tcp-uaf.html
Source: secalert@redhat.com
https://source.android.com/security/bulletin/2016-11-01.html
Source: secalert@redhat.com
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bb1fceca22492109be12640d49f5ea5a544c6bb4
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Patch
http://rhn.redhat.com/errata/RHSA-2017-0036.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://rhn.redhat.com/errata/RHSA-2017-0086.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://rhn.redhat.com/errata/RHSA-2017-0091.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://rhn.redhat.com/errata/RHSA-2017-0113.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/08/15/1
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory
http://www.securityfocus.com/bid/92452
Source: af854a3a-2127-422b-91ae-364da2661108
https://bugzilla.redhat.com/show_bug.cgi?id=1367091
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Third Party Advisory
https://github.com/torvalds/linux/commit/bb1fceca22492109be12640d49f5ea5a544c6bb4
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Patch
https://marcograss.github.io/security/linux/2016/08/18/cve-2016-6828-linux-kernel-tcp-uaf.html
Source: af854a3a-2127-422b-91ae-364da2661108
https://source.android.com/security/bulletin/2016-11-01.html
Source: af854a3a-2127-422b-91ae-364da2661108

24 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.5 / 10.0
EPSS (Exploit Probability)
0.1%
26th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-416

Affected Vendors

linux

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