[El-errata] ELSA-2025-20323 Important: Oracle Linux 9 Unbreakable Enterprise kernel security update

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2025-20323

http://linux.oracle.com/errata/ELSA-2025-20323.html

The following updated rpms for Oracle Linux 9 have been uploaded to the Unbreakable Linux Network:

x86_64:
bpftool-5.15.0-308.179.6.2.el9uek.x86_64.rpm
kernel-uek-5.15.0-308.179.6.2.el9uek.x86_64.rpm
kernel-uek-core-5.15.0-308.179.6.2.el9uek.x86_64.rpm
kernel-uek-debug-5.15.0-308.179.6.2.el9uek.x86_64.rpm
kernel-uek-debug-core-5.15.0-308.179.6.2.el9uek.x86_64.rpm
kernel-uek-debug-devel-5.15.0-308.179.6.2.el9uek.x86_64.rpm
kernel-uek-debug-modules-5.15.0-308.179.6.2.el9uek.x86_64.rpm
kernel-uek-debug-modules-extra-5.15.0-308.179.6.2.el9uek.x86_64.rpm
kernel-uek-devel-5.15.0-308.179.6.2.el9uek.x86_64.rpm
kernel-uek-doc-5.15.0-308.179.6.2.el9uek.noarch.rpm
kernel-uek-modules-5.15.0-308.179.6.2.el9uek.x86_64.rpm
kernel-uek-modules-extra-5.15.0-308.179.6.2.el9uek.x86_64.rpm
kernel-uek-container-5.15.0-308.179.6.2.el9uek.x86_64.rpm
kernel-uek-container-debug-5.15.0-308.179.6.2.el9uek.x86_64.rpm



SRPMS:
http://oss.oracle.com/ol9/SRPMS-updates//kernel-uek-5.15.0-308.179.6.2.el9uek.src.rpm

Related CVEs:

CVE-2024-28956




Description of changes:

[5.15.0-308.179.6.2.el9uek]
- x86/bhi: Do not set BHI_DIS_S in 32-bit mode (Pawan Gupta)  [Orabug: 37920681]
- x86/bpf: Add IBHF call at end of classic BPF (Daniel Sneddon)  [Orabug: 37920681]
- x86/bpf: Call branch history clearing sequence on exit (Daniel Sneddon)  [Orabug: 37920681]
- selftest/x86/bugs: Add selftests for ITS (Pawan Gupta)  [Orabug: 37863726]  {CVE-2024-28956}
- x86/its: Align RETs in BHB clear sequence to avoid thunking (Pawan Gupta)  [Orabug: 37863726]  {CVE-2024-28956}
- x86/its: Add "vmexit" option to skip mitigation on some CPUs (Pawan Gupta)  [Orabug: 37863726]  {CVE-2024-28956}
- x86/its: Enable Indirect Target Selection mitigation (Pawan Gupta)  [Orabug: 37863726]  {CVE-2024-28956}
- x86/its: Add support for ITS-safe return thunk (Pawan Gupta)  [Orabug: 37863726]  {CVE-2024-28956}
- x86/its: Add support for ITS-safe indirect thunk (Pawan Gupta)  [Orabug: 37863726]  {CVE-2024-28956}
- x86/its: Enumerate Indirect Target Selection (ITS) bug (Pawan Gupta)  [Orabug: 37863726]  {CVE-2024-28956}
- Documentation: x86/bugs/its: Add ITS documentation (Pawan Gupta)  [Orabug: 37863726]  {CVE-2024-28956}
- x86/alternatives: Remove faulty optimization (Josh Poimboeuf)  [Orabug: 37863726]  {CVE-2024-28956}
- x86/alternative: Optimize returns patching (Borislav Petkov (AMD))  [Orabug: 37863726]  {CVE-2024-28956}