(RHSA-2020:3010) Important: kernel security, bug fix, and enhancement update

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: kvm: Information leak within a KVM guest (CVE-2019-3016)

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):

• [FJ8.2 Bug]: kernel: retrieving process core dump of the init process (PID 1) fails (BZ#1821378)

• [FJ8.0 Bug]: System hungs up after setting parameters for hugepages (BZ#1835789)

• RHEL8.2 Alpha - ISST-LTE:PowerVM: vNIC DLPAR crashes the LPAR (ibmvnic) (BZ#1836229)

• “[sig-network] Services should be rejected when no endpoints exist” test fails frequently on RHEL8 nodes (BZ#1836302)

• RHEL8.2 Beta - RHEL8.2 reports EEH errors on internal SAS adapter during HTX run on PMEM (SCM/pmem) (BZ#1842406)

• RHEL8.1 - s390/cio: fix virtio-ccw DMA without PV (BZ#1842620)

• deadlock between modprobe and netns exit (BZ#1845164)

• exit_boot failed when install RHEL8.1 (BZ#1846180)

• http request is taking more time for endpoint running on different host via nodeport service (BZ#1847128)

• RHEL8.1 - zEDC problems on z14 (genwqe/pci) (BZ#1847453)

• WARNING: CPU: 1 PID: 0 at arch/x86/kernel/apic/vector.c:846 free_moved_vector+0x141/0x150 (BZ#1848545)

• Backport conntrack race condition fixes (BZ#1851003)

• nf_conntrack module unload fail and refcount become to negative (BZ#1851005)

• OVS: backport performance patches from upstream to 8.2z (BZ#1851235)

• RHEL8.3: backport “smp: Allow smp_call_function_single_async() to insert locked csd” (BZ#1851406)

• [DELL EMC 8.2 BUG] NVMe drive is not detected after multiple hotplug (hot add + surprise remove) operations (BZ#1852045)

Enhancement(s):

• [Mellanox 8.3 FEAT] mlx5: drivers update upto Linux v5.5 (BZ#1843544)

• [IBM 8.3 FEAT] Update nvme driver to latest level for POWER (BZ#1846405)