{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31558","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-03-09T15:48:24.116Z","datePublished":"2026-04-24T14:35:41.209Z","dateUpdated":"2026-05-11T22:11:06.540Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:11:06.540Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: KVM: Make kvm_get_vcpu_by_cpuid() more robust\n\nkvm_get_vcpu_by_cpuid() takes a cpuid parameter whose type is int, so\ncpuid can be negative. Let kvm_get_vcpu_by_cpuid() return NULL for this\ncase so as to make it more robust.\n\nThis fix an out-of-bounds access to kvm_arch::phyid_map::phys_map[]."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/loongarch/kvm/vcpu.c"],"versions":[{"version":"73516e9da512adc63ba3859fbd82a21f6257348f","lessThan":"596c3f8069c4792f22fce8c4452f44410032d910","status":"affected","versionType":"git"},{"version":"73516e9da512adc63ba3859fbd82a21f6257348f","lessThan":"878cf6acb4fd8ab4126cf9d369a5bb0e23123418","status":"affected","versionType":"git"},{"version":"73516e9da512adc63ba3859fbd82a21f6257348f","lessThan":"47857b05bd50db01e211a1b6f513d57901cd3e6b","status":"affected","versionType":"git"},{"version":"73516e9da512adc63ba3859fbd82a21f6257348f","lessThan":"2db06c15d8c7a0ccb6108524e16cd9163753f354","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/loongarch/kvm/vcpu.c"],"versions":[{"version":"6.10","status":"affected"},{"version":"0","lessThan":"6.10","status":"unaffected","versionType":"semver"},{"version":"6.12.80","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.21","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.11","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.12.80"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.18.21"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.19.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/596c3f8069c4792f22fce8c4452f44410032d910"},{"url":"https://git.kernel.org/stable/c/878cf6acb4fd8ab4126cf9d369a5bb0e23123418"},{"url":"https://git.kernel.org/stable/c/47857b05bd50db01e211a1b6f513d57901cd3e6b"},{"url":"https://git.kernel.org/stable/c/2db06c15d8c7a0ccb6108524e16cd9163753f354"}],"title":"LoongArch: KVM: Make kvm_get_vcpu_by_cpuid() more robust","x_generator":{"engine":"bippy-1.2.0"}}}}