The tcp_splice_read function in net/ipv4/tcp.c in the Linux kernel before 4.9.11 allows remote attackers to cause a denial of service (infinite loop and soft lockup) via vectors involving a TCP packet with the URG flag.Referenceshttps://source.android.com/security/bulletin/2017-09-01http://www.securityfocus.com/bid/96421https://access.redhat.com/errata/RHSA-2017:1615http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ccf7abb93af09ad0868ae9033d1ca8108bdaec82https://access.redhat.com/errata/RHSA-2017:1647https://access.redhat.com/errata/RHSA-2017:1616https://access.redhat.com/errata/RHSA-2017:1372http://www.securitytracker.com/id/1037897http://www.debian.org/security/2017/dsa-3804http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.11https://github.com/torvalds/linux/commit/ccf7abb93af09ad0868ae9033d1ca8108bdaec82