CVE-2026-23005

CVE-2026-23005 is a Linux kernel issue where XSTATE_BV bits for features disabled by XFD can be out of sync with XFD during guest XSAVE/XRSTOR handling. The fix clears XSTATE_BV[i] when XFD[i]=1 during KVM_SET_XSAVE loading of guest state and related WRMSR updates, preventing XRSTOR from #NM and ...