[El-errata] ELSA-2022-9481 Important: Oracle Linux 8 Unbreakable Enterprise kernel security update

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2022-9481

http://linux.oracle.com/errata/ELSA-2022-9481.html

The following updated rpms for Oracle Linux 8 have been uploaded to the Unbreakable Linux Network:

x86_64:
kernel-uek-5.4.17-2136.308.9.el8uek.x86_64.rpm
kernel-uek-debug-5.4.17-2136.308.9.el8uek.x86_64.rpm
kernel-uek-debug-devel-5.4.17-2136.308.9.el8uek.x86_64.rpm
kernel-uek-devel-5.4.17-2136.308.9.el8uek.x86_64.rpm
kernel-uek-doc-5.4.17-2136.308.9.el8uek.noarch.rpm


SRPMS:
http://oss.oracle.com/ol8/SRPMS-updates/kernel-uek-5.4.17-2136.308.9.el8uek.src.rpm

Related CVEs:

CVE-2022-21123
CVE-2022-21125
CVE-2022-21127
CVE-2022-21166




Description of changes:

[5.4.17-2136.308.9.el8uek]
- x86/speculation/mmio: Fix late microcode loading (Patrick Colp)  [Orabug: 34276099]

[5.4.17-2136.308.8.el8uek]
- Add debugfs for controlling MMIO state data (Kanth Ghatraju)  [Orabug: 34202259]  {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
- KVM: x86/speculation: Disable Fill buffer clear within guests (Pawan Gupta)  [Orabug: 34202259]  {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
- x86/speculation/mmio: Reuse SRBDS mitigation for SBDS (Pawan Gupta)  [Orabug: 34202259]  {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
- x86/speculation/srbds: Update SRBDS mitigation selection (Pawan Gupta)  [Orabug: 34202259]  {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
- x86/speculation/mmio: Add sysfs reporting for Processor MMIO Stale Data (Pawan Gupta)  [Orabug: 34202259]  {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
- x86/speculation/mmio: Enable CPU Fill buffer clearing on idle (Pawan Gupta)  [Orabug: 34202259]  {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
- x86/bugs: Group MDS, TAA & Processor MMIO Stale Data mitigations (Pawan Gupta)  [Orabug: 34202259]  {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
- x86/speculation/mmio: Add mitigation for Processor MMIO Stale Data (Pawan Gupta)  [Orabug: 34202259]  {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
- x86/speculation: Add a common function for MD_CLEAR mitigation update (Pawan Gupta)  [Orabug: 34202259]  {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
- x86/speculation/mmio: Enumerate Processor MMIO Stale Data bug (Pawan Gupta)  [Orabug: 34202259]  {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
- Documentation: Add documentation for Processor MMIO Stale Data (Pawan Gupta)  [Orabug: 34202259]  {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}