(RHSA-2020:1372) Moderate: kernel security and bug fix update

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

Security Fix(es):

• kernel: powerpc: local user can read vector registers of other users’ processes via a Facility Unavailable exception (CVE-2019-15030)

• kernel: powerpc: local user can read vector registers of other users’ processes via an interrupt (CVE-2019-15031)

• kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure (CVE-2019-18660)

• kernel: use-after-free caused by a malicious USB device in the drivers/hid/usbhid/hiddev.c driver (CVE-2019-19527)

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):

• [FJ8.1 Bug]: fs/devpts: always delete dcache dentry-s in dput() (BZ#1783959)

• qla2xxx: call dma_free_coherent with correct size in all cases in qla24xx_sp_unmap (BZ#1788206)

• qla2xxxx: Firmware update for Gen7 adapter could result in an unusable adapter (BZ#1790350)

• s390/sclp: Fix bit checked for has_sipl (BZ#1791408)

• RHEL8.1 - Error output for CPU-MF auxtrace data in perf: (BZ#1792198)

• [FJ8.0 Bug]: [kernel]: using “kexec -e” to reboot A64FX system causes system panic during the boot of the 2nd kernel (BZ#1792200)

• Fixup tlbie vs store ordering issue on POWER9 (BZ#1794058)

• RHEL8.1 - qeth: add safeguards to RX data path (BZ#1794059)

• RHEL8.1 - STC940:ZZ:Fleet:RHEL:LPM failed with no rmc connection during 6th iteration (ibmvnic) (BZ#1794060)

• RHEL8.1 - disable trace-imc feature (perf:) (BZ#1794061)

• [Broadcom RHEL8.2 FEAT]: megaraid_sas driver update request (BZ#1795335)

• RHEL8.1 pre-Beta - [ FW940 ] [ zz P9 ] kdump fails when XIVE is enabled and dump is trigged from HMC. (BZ#1795337)

• T10 DIF: OOM observed while running I/O (BZ#1795338)

• backport fix for potential deadlock relative to snapshot COW throttling (BZ#1796490)

• Neoverse n1 errata 1542419 “Core may fetch stale instructions from memory and violate ordering” (BZ#1797518)

• [HPE 8.1 Bug] hpsa: bug fix for reset issue (BZ#1797519)

• [HPE 8.0 BUG] System crash when reading /sys/block/<dm>/mq/0/cpu_list file (BZ#1797960)

• kernel: T10 CRC not using hardware-accelerated version from crct10dif_pclmul (BZ#1797961)

• [FJ8.1 Bug]: Dirty pages remain when write() returns ENOSPC. (BZ#1797962)

• RHEL 8 - NVMe/FC Fabric Broadcom Autoconnect Script Fails to Reconnect after Controller Reset (BZ#1798381)

• [RHEL8.2]: Chelsio crypto co-processor Driver (chcr) bugfixes (BZ#1798527)

• [RHEL8.1][Snapshot-1]LUN discovery says unrecognized (BZ#1801216)

• 8.2 snap2 kernel incorrectly signed in brew (BZ#1807231)