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oraclelinuxOracleLinuxELSA-2023-12836
HistorySep 25, 2023 - 12:00 a.m.

kernel security update

2023-09-2500:00:00
linux.oracle.com
9
kernel security
version 5.14.0
microcode changes
amd cpu fixes
vulnerability cve-2023-20593
smm_ctl msr
no_nested_data_bp
zenbleed fix

6.2 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

23.8%

[5.14.0-284.30.1.el9_2]

  • x86/microcode/intel: Expose collect_cpu_info_early() for IFS
  • x86/cpu: Load microcode during restore_processor_state()
  • x86/microcode: Rip out the OLD_INTERFACE
  • x86/microcode: Default-disable late loading
  • x86/microcode: Taint and warn on late loading
  • x86/microcode: Remove unnecessary perf callback
  • x86/microcode: Print previous version of microcode after reload
  • x86/microcode: Rip out the subsys interface gunk
  • x86/microcode: Simplify init path even more
  • x86/microcode/AMD: Rename a couple of functions {CVE-2023-20593}
  • x86/microcode: Add a parameter to microcode_check() to store CPU capabilities {CVE-2023-20593}
  • x86/microcode: Check CPU capabilities after late microcode update correctly {CVE-2023-20593}
  • x86/microcode: Adjust late loading result reporting message {CVE-2023-20593}
  • x86/amd: Cache debug register values in percpu variables {CVE-2023-20593}
  • x86/microcode: Remove ->request_microcode_user()
  • x86/microcode: Kill refresh_fw
  • x86/microcode/amd: Remove load_microcode_amd()'s bsp parameter {CVE-2023-20593}
  • x86/microcode: Drop struct ucode_cpu_info.valid
  • x86/microcode/AMD: Add a @cpu parameter to the reloading functions {CVE-2023-20593}
  • x86/microcode/AMD: Track patch allocation size explicitly
  • x86/microcode/AMD: Fix mixed steppings support {CVE-2023-20593}
  • x86/microcode/core: Return an error only when necessary {CVE-2023-20593}
  • x86/apic: Don’t disable x2APIC if locked
  • x86/cpu/amd: Move the errata checking functionality up {CVE-2023-20593}
  • x86/cpu: Remove redundant extern x86_read_arch_cap_msr()
  • x86/cpu, kvm: Add support for CPUID_80000021_EAX
  • KVM: x86: Advertise that the SMM_CTL MSR is not supported
  • KVM: x86: Move open-coded CPUID leaf 0x80000021 EAX bit propagation code
  • x86/cpu, kvm: Add the NO_NESTED_DATA_BP feature
  • x86/bugs: Make sure MSR_SPEC_CTRL is updated properly upon resume from S3
  • x86/cpu: Support AMD Automatic IBRS
  • x86/CPU/AMD: Make sure EFER[AIBRSE] is set
  • x86/cpu/amd: Add a Zenbleed fix {CVE-2023-20593}