CVE-2026-31558 — LoongArch: KVM: Make kvm_get_vcpu_by_cpuid() more robust
In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Make kvm_get_vcpu_by_cpuid() more robust kvm_get_vcpu_by_cpuid() takes a cpuid parameter wh…
Published: 2026-04-24 · CVSS: 8.8 · CVSS 3.1
In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Make kvm_get_vcpu_by_cpuid() more robust kvm_get_vcpu_by_cpuid() takes a cpuid parameter whose type is int, so cpuid can be negative. Let kvm_get_vcpu_by_cpuid() return NULL for this case so as to make it more robust. This fix an out-of-bounds access to kvm_arch::phyid_map::phys_map[].
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7