CVE-2016-6828

CVSS V2 Medium 4.9 CVSS V3 Medium 5.5
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.
Overview
  • CVE ID
  • CVE-2016-6828
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2016-10-16T21:59:08
  • Last Modified Date
  • 2023-02-12T23:25:10
Weakness Enumerations
CWE URL
CWE-416 http://cwe.mitre.org/data/definitions/416.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 1 OR 4.7.4
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:N/I:N/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 4.9
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 5.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bb1fceca22492109be12640d49f5ea5a544c6bb4 Issue Tracking Patch
http://rhn.redhat.com/errata/RHSA-2017-0036.html
http://rhn.redhat.com/errata/RHSA-2017-0086.html
http://rhn.redhat.com/errata/RHSA-2017-0091.html
http://rhn.redhat.com/errata/RHSA-2017-0113.html
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5 Release Notes Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/08/15/1 Exploit Third Party Advisory
http://www.securityfocus.com/bid/92452
https://access.redhat.com/errata/RHSA-2017:0036
https://access.redhat.com/errata/RHSA-2017:0086
https://access.redhat.com/errata/RHSA-2017:0091
https://access.redhat.com/errata/RHSA-2017:0113
https://access.redhat.com/security/cve/CVE-2016-6828
https://bugzilla.redhat.com/show_bug.cgi?id=1367091 Issue Tracking Third Party Advisory
https://github.com/torvalds/linux/commit/bb1fceca22492109be12640d49f5ea5a544c6bb4 Issue Tracking Patch
https://marcograss.github.io/security/linux/2016/08/18/cve-2016-6828-linux-kernel-tcp-uaf.html
https://source.android.com/security/bulletin/2016-11-01.html
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2016-6828
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6828
History
Created Old Value New Value Data Type Notes
2022-05-10 18:52:05 Added to TrackCVE
2022-12-02 11:44:53 2016-10-16T21:59Z 2016-10-16T21:59:08 CVE Published Date updated
2022-12-02 11:44:53 2018-01-05T02:31:07 CVE Modified Date updated
2022-12-02 11:44:53 Modified Vulnerability Status updated
2023-02-02 23:05:37 2023-02-02T21:17:17 CVE Modified Date updated
2023-02-02 23:05:38 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. Description updated
2023-02-02 23:05:44 References updated
2023-02-13 01:06:46 2023-02-12T23:25:10 CVE Modified Date updated
2023-02-13 01:06:46 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. Description updated