RHSA-2020:3222 — Security Advisory

An update for kernel is now available for Red Hat Enterprise Linux 8.1 Extended Update Support.

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.

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

Security Fix(es):

• kernel: use-after-free in sound/core/timer.c (CVE-2019-19807)

• kernel: kernel: DAX hugepages not considered during mremap (CVE-2020-10757)

• kernel: Rogue cross-process SSBD shutdown. Linux scheduler logical bug allows an attacker to turn off the SSBD protection. (CVE-2020-10766)

• kernel: Indirect Branch Prediction Barrier is force-disabled when STIBP is unavailable or enhanced IBRS is available. (CVE-2020-10767)

• kernel: Indirect branch speculation can be enabled after it was force-disabled by the PR_SPEC_FORCE_DISABLE prctl command. (CVE-2020-10768)

• kernel: buffer overflow in mwifiex_cmd_append_vsie_tlv function in drivers/net/wireless/marvell/mwifiex/scan.c (CVE-2020-12653)

• kernel: heap-based buffer overflow in mwifiex_ret_wmm_get_status function in drivers/net/wireless/marvell/mwifiex/wmm.c (CVE-2020-12654)

• Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario (CVE-2020-12888)

• kernel: lockdown: bypass through ACPI write via efivar_ssdt (CVE-2019-20908)

• kernel: lockdown: bypass through ACPI write via acpi_configfs (CVE-2020-15780)

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):

• [DELL EMC 8.1 BUG] : Observing Multiple "hw csum failure" while installing RHEL 8.1 on iSCSI LUN (BZ#1821374)

• kernel: provide infrastructure to support dual-signing of the kernel (foundation to help address CVE-2020-10713) (BZ#1837432)

• deadlock between modprobe and netns exit (BZ#1845163)

• exit_boot failed when install RHEL8.1 (BZ#1846179)

• http request is taking more time for endpoint running on different host via nodeport service (BZ#1847127)

• RHEL8.1 - s390/cio: fix virtio-ccw DMA without PV (BZ#1847534)

• RHEL8.1 - zEDC problems on z14 (genwqe/pci) (BZ#1847939)

• NVMe/FC with DM-MP unexpected I/O failure during "transitioning" [EIOP-8345] (BZ#1854678)

• Backport conntrack race condition fixes (BZ#1854953)

• nf_conntrack module unload fail and refcount become to negative (BZ#1854954)