An issue was discovered in the size of the stack guard page on Linux, specifically a 4k stack guard page is not sufficiently large and can be "jumped" over (the stack guard page is bypassed), this affects Linux Kernel versions 4.11.5 and earlier (the stackguard page was introduced in 2010).

ELSA-2017-3592: Unbreakable Enterprise kernel security update (IMPORTANT)

ELSA-2017-3587: Unbreakable Enterprise kernel security update (IMPORTANT)

ELSA-2017-3583: glibc security update (IMPORTANT)

ELSA-2017-3582: glibc security update (IMPORTANT)

ELSA-2017-1486: kernel security update (IMPORTANT)

ELSA-2017-1484: kernel security update (IMPORTANT)

ELSA-2017-1484-1: kernel security update (IMPORTANT)

ELSA-2017-1482-1: kernel security update (IMPORTANT)

Security update for the Linux Kernel

Security update for the Linux Kernel

Security update for the Linux Kernel

Security update for the Linux Kernel