CVE-2026-31558

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An out-of-bounds access occurs in the kvm arch::phyid map::phys map[] array within the LoongArch KVM implementation. This is caused by the kvm get vcpu by cpuid() function accepting a cpuid parameter of type int, which allows negative values to be processed.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.