kernel, perf, python security update

CentOS Errata and Security Advisory CESA-2019:3836

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• hw: Machine Check Error on Page Size Change (IFU) (CVE-2018-12207)

• hw: TSX Transaction Asynchronous Abort (TAA) (CVE-2019-11135)

• Kernel: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)

• hw: Intel GPU Denial Of Service while accessing MMIO in lower power state (CVE-2019-0154)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

• [Intel 6.10 Bug] With mWait/C-states disabled, HT on, ibrs enabled, performance impact observed on user space benchmark (BZ#1560787)

• kernel-2.6.32-573.60.2.el6 hangs/resets during boot in efi_enter_virtual_mode() on Xeon v2 E7-2870 (BZ#1645724)

• Slab leak: skbuff_head_cache slab object still allocated after mcast processes are stopped and “fragments dropped after timeout” errors are shown (BZ#1752536)

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2019-November/085674.html

Affected packages:
kernel
kernel-abi-whitelists
kernel-debug
kernel-debug-devel
kernel-devel
kernel-doc
kernel-firmware
kernel-headers
perf
python-perf

Upstream details at:
https://access.redhat.com/errata/RHSA-2019:3836