Detections
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CVE-2016-6828
medium
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.
References
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
https://github.com/torvalds/linux/commit/bb1fceca22492109be12640d49f5ea5a544c6bb4
https://euvd.enisa.europa.eu/vulnerability/EUVD-2016-7713
http://www.securityfocus.com/bid/92452
http://www.openwall.com/lists/oss-security/2016/08/15/1
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