kernel, perf, python security update

CentOS Errata and Security Advisory CESA-2019:0717

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

Security Fix(es):

• kernel: Missing check in fs/inode.c:inode_init_owner() does not clear SGID bit on non-directories for non-members (CVE-2018-13405)

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):

• sched/sysctl: Check user input value of sysctl_sched_time_avg (BZ#1579128)

• unable to handle kernel NULL pointer dereference at 000000000000005d in tcp_enter_frto+0x102 (BZ#1585892)

• qla2xxx: Mask Off Scope bits for Retry delay timer in the driver (BZ#1588133)

• [PATCH] perf: Fix a race between ring_buffer_detach() and ring_buffer_wakeup() (BZ#1589340)

• RHEL6.10 - kernel: improve spectre mitigation for s390x (BZ#1625381)

• kernel panic due to NULL pointer dereference in __wake_up_common through perf_event_wakeup (BZ#1627672)

• After upgrading from rhel 6.9 to rhel 6.10, files in a cifs share can’t be read (BZ#1636484)

• Retpoline impact on vdso gettimeofday performance (BZ#1638552)

• [RHEL 6.10] 32-bit kernel-2.6.32-754.3.5 registers the swap of 4k size only (BZ#1670328)

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2019-April/085427.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-2019:0717