In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfs_rq's, which allows attackers to cause a denial of service (infinite loop in update_blocked_averages) or possibly have unspecified other impact by inducing a high load.Referenceshttps://github.com/torvalds/linux/commit/c40f7d74c741a907cfaeb73a7697081881c497d0http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c40f7d74c741a907cfaeb73a7697081881c497d0https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.2https://access.redhat.com/errata/RHSA-2019:1959https://access.redhat.com/errata/RHSA-2019:1971https://usn.ubuntu.com/4115-1/https://usn.ubuntu.com/4118-1/https://usn.ubuntu.com/4211-2/https://usn.ubuntu.com/4211-1/
