LoongArch: KVM: Handle the case that EIOINTC’s coremap is empty_CVE-2026-31569

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: KVM: Handle the case that EIOINTC's coremap is empty\n\nEIOINTC's coremap in eiointc_update_sw_coremap() can be empty, currently\nwe get a cpuid with -1 in this case, but we actually need 0 because it's\nsimilar as the case that cpuid >= 4.\n\nThis fix an out-of-bounds access to kvm_arch::phyid_map::phys_map[].",
    "published": "2026-04-24T14:35:48.768Z",
    "modified": "2026-04-27T14:04:07.997Z",
    "type": "cve",
    "title": "LoongArch: KVM: Handle the case that EIOINTC's coremap is empty",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/126053d0a685bf1f2e98db8966386f38b2336338\nhttps://git.kernel.org/stable/c/2a0cbcd28ecf6e0b88fa498bebb94bd1be61a7c3\nhttps://git.kernel.org/stable/c/b97bd69eb0f67b5f961b304d28e9ba45e202d841",
    "id": "CVE-2026-31569",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 3956a52bc05bd811082a3c9d2b423ee957e6fefc\nLinux Linux 3956a52bc05bd811082a3c9d2b423ee957e6fefc\nLinux Linux 3956a52bc05bd811082a3c9d2b423ee957e6fefc\nLinux Linux 6.13",
    "sourceHref": "",
    "cvss": {
        "score": 7.3,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "3956a52bc05bd811082a3c9d2b423ee957e6fefc",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}