CVE-2022-50720

The CVE-2022-50720 entry concerns the Linux kernel x86 APIC handling: BIOS can lock APIC into x2APIC mode, and if the kernel attempts to disable x2APIC or revert to legacy APIC while locked, a GP fault can occur. The vulnerability is tied to the new MSR IA32_XAPIC_DISABLE_STATUS and the LEGACY_XA...

CVE-2022-50720 x86/apic: Don't disable x2APIC if locked

In the Linux kernel, the following vulnerability has been resolved: x86/apic: Don't disable x2APIC if locked The APIC supports two modes, legacy APIC or xAPIC, and Extended APIC or x2APIC. X2APIC mode is mostly compatible with legacy APIC, but it disables the memory-mapped APIC interface in favor...

kernel: x86/apic: Don't disable x2APIC if locked

In the Linux kernel, the following vulnerability has been resolved: x86/apic: Don't disable x2APIC if locked The APIC supports two modes, legacy APIC or xAPIC, and Extended APIC or x2APIC. X2APIC mode is mostly compatible with legacy APIC, but it disables the memory-mapped APIC interface in favor...