Moderate: kernel security, bug fix, and enhancement update

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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):

• Incomplete cleanup of multi-core shared buffers (aka SBDR) (CVE-2022-21123)
• Incomplete cleanup of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125)
• Incomplete cleanup in specific special register write operations (aka DRPW) (CVE-2022-21166)

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):

• Bad page state in process qemu-kvm pfn:68a74600 (BZ#2081013)
• slub corruption during LPM of hnv interface (BZ#2081250)
• Affinity broken due to vector space exhaustion (BZ#2084646)
• 'rmmod pmt_telemetry' panics on ADL-P IOTG (BZ#2091079)
• Unable to boot RHEL-8.6 on Brazos max. config (Install is success) (BZ#2092241)
• kernel crash after reboot of T14/G2 AMD laptop (mt7921e module) (BZ#2095654)
• mt7921: free resources on pci_probe error path (BZ#2101684)
• NLM should be more defensive if underlying FS changes fl_owner (BZ#2102099)
• RHEL8/async-pf Guest call trace when reboot after postcopy migration with high stress workload (BZ#2105340)
• execve exit tracepoint not called (BZ#2106662)
• QProcess dead lock on kernel-4.18.0-358 (BZ#2107643)
• KVM fix guest FPU uABI size to kvm_xsave (BZ#2107652)
• KVM selftests fail to compile (BZ#2107655)
• Some monitor have no display with AMD W6400 when boot into OS. (BZ#2109826)
• Percpu counter usage is gradually getting increasing during podman container recreation. (BZ#2110039)
• multipath failed to recover after EEH hit on flavafish adapter on Denali(qla2xxx/flavafish/RHEL8.6/Denali) (BZ#2110768)
• soft lockups under heavy I/O load to ahci connected SSDs (BZ#2110772)
• trouble re-assigning MACs to VFs, ice stricter than other drivers (BZ#2111936)
• Intel MPI 2019.0 - mpirun stuck on latest kernel (BZ#2112030)
• Multicast packets are not received by all VFs on the same port even though they have the same VLAN (BZ#2117026)
• Hyper-V 2019 Dynamic Memory Problem hv_balloon (BZ#2117050)
• kernel BUG at kernel/sched/deadline.c:1561! (BZ#2117410)
• ALSA (sound) driver - update Intel SOF kcontrol code (BZ#2117732)
• bridge over bond over ice ports has no connection (BZ#2118580)
• Fix max VLANs available for VF (BZ#2118581)
• offline selftest failed (BZ#2118582)
• INTEL NVMUpdate utility ver 3.20 is failing to update firmware on E810-XXVDA4T (WPC) (BZ#2118583)
• VM configured with failover interface will coredump after been migrating from source host to target host(only iavf driver) (BZ#2118705)
• Fix max VLANs available for untrusted VF (BZ#2118707)
• Softlockup on infinite loop in task_get_css() for a CSS_DYING cpuset (BZ#2120776)

Enhancement(s):

• KVM Sapphire Rapids (SPR) AMX Instructions (BZ#2088287)
• KVM Sapphire Rapids (SPR) AMX Instructions part2 (BZ#2088288)
• ice: Driver Update (BZ#2102359)
• iavf: Driver Update (BZ#2102360)
• iommu/vt-d: Make DMAR_UNITS_SUPPORTED a config setting (BZ#2112983)

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 for x86_64 8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.6 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.6 ppc64le
• Red Hat Virtualization Host 4 for RHEL 8 x86_64
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• Red Hat Enterprise Linux for ARM 64 8 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64
• Red Hat CodeReady Linux Builder for x86_64 8 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian 8 ppc64le
• Red Hat CodeReady Linux Builder for ARM 64 8 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.6 aarch64
• Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 8.6 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 8.6 ppc64le
• Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 8.6 aarch64

Fixes

• BZ - 2090237 - CVE-2022-21123 hw: cpu: Incomplete cleanup of multi-core shared buffers (aka SBDR)
• BZ - 2090240 - CVE-2022-21125 hw: cpu: Incomplete cleanup of microarchitectural fill buffers (aka SBDS)
• BZ - 2090241 - CVE-2022-21166 hw: cpu: Incomplete cleanup in specific special register write operations (aka DRPW)

CVEs

• CVE-2022-21123
• CVE-2022-21125
• CVE-2022-21166

References

• https://access.redhat.com/security/updates/classification/#moderate