RHSA-2020:3222: Important: kernel security and bug fix update

First published: Wed Jul 29 2020(Updated: )

The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: use-after-free in sound/core/timer.c (CVE-2019-19807)</li> <li> kernel: kernel: DAX hugepages not considered during mremap (CVE-2020-10757)</li> <li> kernel: Rogue cross-process SSBD shutdown. Linux scheduler logical bug allows an attacker to turn off the SSBD protection. (CVE-2020-10766)</li> <li> kernel: Indirect Branch Prediction Barrier is force-disabled when STIBP is unavailable or enhanced IBRS is available. (CVE-2020-10767)</li> <li> kernel: Indirect branch speculation can be enabled after it was force-disabled by the PR_SPEC_FORCE_DISABLE prctl command. (CVE-2020-10768)</li> <li> kernel: buffer overflow in mwifiex_cmd_append_vsie_tlv function in drivers/net/wireless/marvell/mwifiex/scan.c (CVE-2020-12653)</li> <li> kernel: heap-based buffer overflow in mwifiex_ret_wmm_get_status function in drivers/net/wireless/marvell/mwifiex/wmm.c (CVE-2020-12654)</li> <li> Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario (CVE-2020-12888)</li> <li> kernel: lockdown: bypass through ACPI write via efivar_ssdt (CVE-2019-20908)</li> <li> kernel: lockdown: bypass through ACPI write via acpi_configfs (CVE-2020-15780)</li> 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.<br>Bug Fix(es):<br><li> [DELL EMC 8.1 BUG] : Observing Multiple "hw csum failure" while installing RHEL 8.1 on iSCSI LUN (BZ#1821374)</li> <li> kernel: provide infrastructure to support dual-signing of the kernel (foundation to help address CVE-2020-10713) (BZ#1837432)</li> <li> deadlock between modprobe and netns exit (BZ#1845163)</li> <li> exit_boot failed when install RHEL8.1 (BZ#1846179)</li> <li> http request is taking more time for endpoint running on different host via nodeport service (BZ#1847127)</li> <li> RHEL8.1 - s390/cio: fix virtio-ccw DMA without PV (BZ#1847534)</li> <li> RHEL8.1 - zEDC problems on z14 (genwqe/pci) (BZ#1847939)</li> <li> NVMe/FC with DM-MP unexpected I/O failure during "transitioning" [EIOP-8345] (BZ#1854678)</li> <li> Backport conntrack race condition fixes (BZ#1854953)</li> <li> nf_conntrack module unload fail and refcount become to negative (BZ#1854954)</li>

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