CVE-2016-6828
Linux Torvalds TCP Denial of Service Use-After-Free
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.
INFO
Published Date :
Oct. 16, 2016, 9:59 p.m.
Last Modified :
Feb. 12, 2023, 11:25 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2016-6828 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2016-6828.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2016-6828 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-6828 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 12, 2023
Action Type Old Value New Value Changed Description A use-after-free vulnerability was found in tcp_xmit_retransmit_queue and other tcp_* functions. This condition could allow an attacker to send an incorrect selective acknowledgment to existing connections, possibly resetting a connection. 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. Removed CVSS V2 Red Hat, Inc. (AV:L/AC:L/Au:N/C:N/I:P/A:P) Removed CVSS V3 Red Hat, Inc. AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L Removed Reference https://access.redhat.com/errata/RHSA-2017:0036 [No Types Assigned] Removed Reference https://access.redhat.com/errata/RHSA-2017:0086 [No Types Assigned] Removed Reference https://access.redhat.com/errata/RHSA-2017:0091 [No Types Assigned] Removed Reference https://access.redhat.com/errata/RHSA-2017:0113 [No Types Assigned] Removed Reference https://access.redhat.com/security/cve/CVE-2016-6828 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 02, 2023
Action Type Old Value New Value Changed 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. A use-after-free vulnerability was found in tcp_xmit_retransmit_queue and other tcp_* functions. This condition could allow an attacker to send an incorrect selective acknowledgment to existing connections, possibly resetting a connection. Added CVSS V2 Red Hat, Inc. (AV:L/AC:L/Au:N/C:N/I:P/A:P) Added CVSS V3 Red Hat, Inc. AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L Added Reference https://access.redhat.com/errata/RHSA-2017:0091 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2017:0086 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2017:0036 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2017:0113 [No Types Assigned] Added Reference https://access.redhat.com/security/cve/CVE-2016-6828 [No Types Assigned] -
CVE Modified by [email protected]
Jan. 05, 2018
Action Type Old Value New Value Added Reference http://rhn.redhat.com/errata/RHSA-2017-0113.html [No Types Assigned] Added Reference http://rhn.redhat.com/errata/RHSA-2017-0091.html [No Types Assigned] Added Reference http://rhn.redhat.com/errata/RHSA-2017-0086.html [No Types Assigned] Added Reference http://rhn.redhat.com/errata/RHSA-2017-0036.html [No Types Assigned] -
CVE Modified by [email protected]
Jan. 03, 2017
Action Type Old Value New Value Added Reference https://marcograss.github.io/security/linux/2016/08/18/cve-2016-6828-linux-kernel-tcp-uaf.html [No Types Assigned] -
CVE Modified by [email protected]
Nov. 28, 2016
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/92452 [No Types Assigned] Added Reference https://source.android.com/security/bulletin/2016-11-01.html [No Types Assigned] -
Modified Analysis by [email protected]
Oct. 17, 2016
Action Type Old Value New Value Added CPE Configuration Configuration 1 OR *cpe:2.3:o:linux:linux_kernel:4.7.4:*:*:*:*:*:*:* (and previous) Added CVSS V2 (AV:L/AC:L/Au:N/C:N/I:N/A:C) Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bb1fceca22492109be12640d49f5ea5a544c6bb4 No Types Assigned http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bb1fceca22492109be12640d49f5ea5a544c6bb4 Issue Tracking, Patch Changed Reference Type http://www.openwall.com/lists/oss-security/2016/08/15/1 No Types Assigned http://www.openwall.com/lists/oss-security/2016/08/15/1 Third Party Advisory, Exploit Changed Reference Type https://github.com/torvalds/linux/commit/bb1fceca22492109be12640d49f5ea5a544c6bb4 No Types Assigned https://github.com/torvalds/linux/commit/bb1fceca22492109be12640d49f5ea5a544c6bb4 Issue Tracking, Patch Changed Reference Type http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5 No Types Assigned http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5 Release Notes, Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1367091 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1367091 Third Party Advisory, Issue Tracking Added CWE CWE-416 -
CVE Translated by [email protected]
Oct. 17, 2016
Action Type Old Value New Value -
Initial Analysis by [email protected]
Oct. 17, 2016
Action Type Old Value New Value Changed CPE Configuration Configuration 1 OR Configuration 1 OR *cpe:2.3:o:linux:linux_kernel:4.7.4:*:*:*:*:*:*:* (and previous) Added CVSS V2 (AV:L/AC:L/Au:N/C:N/I:N/A:C) Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bb1fceca22492109be12640d49f5ea5a544c6bb4 No Types Assigned http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bb1fceca22492109be12640d49f5ea5a544c6bb4 Patch, Vendor Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2016/08/15/1 No Types Assigned http://www.openwall.com/lists/oss-security/2016/08/15/1 Exploit, Third Party Advisory Changed Reference Type https://github.com/torvalds/linux/commit/bb1fceca22492109be12640d49f5ea5a544c6bb4 No Types Assigned https://github.com/torvalds/linux/commit/bb1fceca22492109be12640d49f5ea5a544c6bb4 Patch Changed Reference Type http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5 No Types Assigned http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5 Release Notes, Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1367091 Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1367091 Issue Tracking, Third Party Advisory, VDB Entry Added CWE CWE-416
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-6828 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2016-6828
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.12475
percentile