CVEvulnerability
CVE-2016-6828
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2016-10-16
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 5.5 MEDIUM — CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 4.9 MEDIUM — AV:L/AC:L/Au:N/C:N/I:N/A:C
- Weaknesses
- CWE-416
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.
Affected configurations
• linux linux kernel (<= 4.7.4)
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- 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 rhn.redhat.com
- http://rhn.redhat.com/errata/RHSA-2017-0086.html rhn.redhat.com
- http://rhn.redhat.com/errata/RHSA-2017-0091.html rhn.redhat.com
- http://rhn.redhat.com/errata/RHSA-2017-0113.html rhn.redhat.com
- 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 www.securityfocus.com
- 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 marcograss.github.io
- https://source.android.com/security/bulletin/2016-11-01.html source.android.com
- 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 rhn.redhat.com
- http://rhn.redhat.com/errata/RHSA-2017-0086.html rhn.redhat.com
- http://rhn.redhat.com/errata/RHSA-2017-0091.html rhn.redhat.com
- http://rhn.redhat.com/errata/RHSA-2017-0113.html rhn.redhat.com
- 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 www.securityfocus.com
- 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 marcograss.github.io
- https://source.android.com/security/bulletin/2016-11-01.html source.android.com