[El-errata] ELSA-2025-20406 Moderate: Oracle Linux 8 Unbreakable Enterprise kernel security update

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2025-20406

http://linux.oracle.com/errata/ELSA-2025-20406.html

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

x86_64:
kernel-uek-5.4.17-2136.344.4.3.el8uek.x86_64.rpm
kernel-uek-container-5.4.17-2136.344.4.3.el8uek.x86_64.rpm
kernel-uek-container-debug-5.4.17-2136.344.4.3.el8uek.x86_64.rpm
kernel-uek-debug-5.4.17-2136.344.4.3.el8uek.x86_64.rpm
kernel-uek-debug-devel-5.4.17-2136.344.4.3.el8uek.x86_64.rpm
kernel-uek-devel-5.4.17-2136.344.4.3.el8uek.x86_64.rpm
kernel-uek-doc-5.4.17-2136.344.4.3.el8uek.noarch.rpm


SRPMS:
http://oss.oracle.com/ol8/SRPMS-updates/kernel-uek-5.4.17-2136.344.4.3.el8uek.src.rpm

Related CVEs:

CVE-2024-28956
CVE-2024-36350
CVE-2024-36357




Description of changes:

[5.4.17-2136.344.4.3.el8uek]
- Add Zen34 clients (Borislav Petkov (AMD))  [Orabug: 38129026]  {CVE-2024-36350} {CVE-2024-36357}
- x86/process: Move the buffer clearing before MONITOR (Kim Phillips)  [Orabug: 38129026]  {CVE-2024-36350} {CVE-2024-36357}
- KVM: SVM: Advertize TSA CPUID bits to guests (Borislav Petkov (AMD))  [Orabug: 38129026]  {CVE-2024-36350} {CVE-2024-36357}
- x86/bugs: Add a Transient Scheduler Attacks mitigation (Borislav Petkov (AMD))  [Orabug: 38129026]  {CVE-2024-36350} {CVE-2024-36357}
- KVM: x86: add support for CPUID leaf 0x80000021 (Paolo Bonzini)  [Orabug: 38129026]  {CVE-2024-36350} {CVE-2024-36357}
- x86/bugs: Rename MDS machinery to something more generic (Borislav Petkov (AMD))  [Orabug: 38129026]  {CVE-2024-36350} {CVE-2024-36357}
- x86/CPU/AMD: Add ZenX generations flags (Borislav Petkov (AMD))  [Orabug: 38129026]  {CVE-2024-36350} {CVE-2024-36357}
- x86/bugs: Free X86_BUG_AMD_APIC_C1E and X86_BUG_AMD_E400 bits (Boris Ostrovsky)  [Orabug: 38129026]  {CVE-2024-36350} {CVE-2024-36357}
- x86/bugs: Enabling Retbleed and SRSO mitigation can taint the kernel (Alexandre Chartre)  [Orabug: 38129010]
- selftest/x86/bugs: Add selftests for ITS (Pawan Gupta)  [Orabug: 38128642]  {CVE-2024-28956}
- x86/its: Align RETs in BHB clear sequence to avoid thunking (Pawan Gupta)  [Orabug: 38128642]  {CVE-2024-28956}
- x86/its: Add "vmexit" option to skip mitigation on some CPUs (Pawan Gupta)  [Orabug: 38128642]  {CVE-2024-28956}
- x86/its: Enable Indirect Target Selection mitigation (Pawan Gupta)  [Orabug: 38128642]  {CVE-2024-28956}
- x86/its: Add support for ITS-safe return thunk (Pawan Gupta)  [Orabug: 38128642]  {CVE-2024-28956}
- x86/its: Add support for ITS-safe indirect thunk (Pawan Gupta)  [Orabug: 38128642]  {CVE-2024-28956}
- x86/its: Enumerate Indirect Target Selection (ITS) bug (Pawan Gupta)  [Orabug: 38128642]  {CVE-2024-28956}
- Documentation: x86/bugs/its: Add ITS documentation (Pawan Gupta)  [Orabug: 38128642]  {CVE-2024-28956}