This module exploits a race condition vulnerability in the Linux Kernel via MAP_PRIVATE COW. The bug relies in the way the Linux kernel's memory subsystem handled the copy-on-write (COW) breakage of private read-only memory mappings. An unprivileged, local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on the system. This update improves the post-escalation execution.
Wednesday, February 7, 2018 - 00:00