Synopsis

Important: kernel security and bug fix update

Type/Severity

Security Advisory: Important

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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: nfs: use-after-free in svc_process_common() (CVE-2018-16884)
• hw: Intel GPU blitter manipulation can allow for arbitrary kernel memory write (CVE-2019-0155)
• Kernel: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)
• Kernel: page cache side channel attacks (CVE-2019-5489)
• hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB) (CVE-2019-9506)
• kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c (CVE-2019-10126)
• kernel: heap overflow in mwifiex_update_vs_ie() function of Marvell WiFi driver (CVE-2019-14816)
• Kernel: KVM: OOB memory access via mmio ring buffer (CVE-2019-14821)
• kernel: heap overflow in marvell/mwifiex/tdls.c (CVE-2019-14901)
• 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):

• Backport TCP follow-up for small buffers (BZ#1739184)
• TCP performance regression after CVE-2019-11478 bug fix (BZ#1743170)
• RHEL8.0 - bnx2x link down, caused by transmit timeouts during load test (Marvell/Cavium/QLogic) (L3:) (BZ#1743548)
• block: blk-mq improvement (BZ#1780567)
• RHEL8.0 - Regression to RHEL7.6 by changing force_latency found during RHEL8.0 validation for SAP HANA on POWER (BZ#1781111)
• blk-mq: overwirte performance drops on real MQ device (BZ#1782183)
• RHEL8: creating vport takes lot of memory i.e 2GB per vport which leads to drain out system memory quickly. (BZ#1782705)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Affected Products

• Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 8.0 ppc64le
• Red Hat Enterprise Linux Server - Update Services for SAP Solutions 8.0 x86_64

Fixes

• BZ - 1646768 - CVE-2018-12207 hw: Machine Check Error on Page Size Change (IFU)
• BZ - 1660375 - CVE-2018-16884 kernel: nfs: use-after-free in svc_process_common()
• BZ - 1664110 - CVE-2019-5489 Kernel: page cache side channel attacks
• BZ - 1698757 - CVE-2019-3900 Kernel: vhost_net: infinite loop while receiving packets leads to DoS
• BZ - 1716992 - CVE-2019-10126 kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c
• BZ - 1724393 - CVE-2019-0154 hw: Intel GPU Denial Of Service while accessing MMIO in lower power state
• BZ - 1724398 - CVE-2019-0155 hw: Intel GPU blitter manipulation can allow for arbitrary kernel memory write
• BZ - 1727857 - CVE-2019-9506 hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB)
• BZ - 1744149 - CVE-2019-14816 kernel: heap overflow in mwifiex_update_vs_ie() function of Marvell WiFi driver
• BZ - 1746708 - CVE-2019-14821 Kernel: KVM: OOB memory access via mmio ring buffer
• BZ - 1753062 - CVE-2019-11135 hw: TSX Transaction Asynchronous Abort (TAA)
• BZ - 1773519 - CVE-2019-14901 kernel: heap overflow in marvell/mwifiex/tdls.c

CVEs

• CVE-2018-12207
• CVE-2018-16884
• CVE-2019-0154
• CVE-2019-0155
• CVE-2019-3900
• CVE-2019-5489
• CVE-2019-9506
• CVE-2019-10126
• CVE-2019-11135
• CVE-2019-14816
• CVE-2019-14821
• CVE-2019-14901

References