CVE-2016-6828

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.

CVSS v3.0 5.5 MEDIUM
CVSS v2.0 4.9 MEDIUM

5.5^/10

CVSS v3.0 : MEDIUM

Vector : AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.9^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:N/C:N/I:N/A:C

Exploitability : 3.9 / Impact : 6.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

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

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Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Information

Published : 2016-10-16 14:59

Updated : 2023-02-12 15:25

NVD link : CVE-2016-6828

Mitre link : CVE-2016-6828

JSON object : View

CWE

CWE-416

Use After Free

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Products Affected

linux

linux_kernel

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