{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98470", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.351Z", "datePublished": "2026-10-18T15:15:22.878Z", "dateUpdated": "2026-10-19T09:20:08.206Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:20:08.206Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Don't WARN on an unknown VM ioctl in protected mode\n\nkvm_pkvm_ioctl_allowed() WARNs when kvm_get_cap_for_kvm_ioctl() doesn't\nfind the ioctl number in vm_ioctl_caps[], and kvm_arch_vm_ioctl() calls\nit for every number the generic code doesn't handle, so\nioctl(vm_fd, 0xdeadbeef) from userspace taints a pKVM host and panics it\nunder panic_on_warn. The lookup is fed userspace input: return false,\nand userspace gets the -EINVAL kvm_arch_vm_ioctl() returns for that\nnumber on a host without pKVM."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/arm64/include/asm/kvm_pkvm.h"], "versions": [{"version": "b12b3b04f6ba072ca5a618a75e546c996be94bd1", "lessThan": "cc53eb5c6515e3221314624a22c9da9c80a67f63", "status": "affected", "versionType": "git"}, {"version": "b12b3b04f6ba072ca5a618a75e546c996be94bd1", "lessThan": "49d9d295d69d07e850cae35933ba8519e2915f26", "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/arm64/include/asm/kvm_pkvm.h"], "versions": [{"version": "7.0", "status": "affected"}, {"version": "0", "lessThan": "7.0", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.9", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "7.0", "versionEndExcluding": "7.2.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/cc53eb5c6515e3221314624a22c9da9c80a67f63"}, {"url": "https://git.kernel.org/stable/c/49d9d295d69d07e850cae35933ba8519e2915f26"}], "title": "KVM: arm64: Don't WARN on an unknown VM ioctl in protected mode", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/arm64/include/asm/kvm_pkvm.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "cc53eb5c6515e3221314624a22c9da9c80a67f63", "status": "affected", "version": "b12b3b04f6ba072ca5a618a75e546c996be94bd1", "versionType": "git"}, {"lessThan": "49d9d295d69d07e850cae35933ba8519e2915f26", "status": "affected", "version": "b12b3b04f6ba072ca5a618a75e546c996be94bd1", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/arm64/include/asm/kvm_pkvm.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "7.0"}, {"lessThan": "7.0", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.9", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Don't WARN on an unknown VM ioctl in protected mode\n\nkvm_pkvm_ioctl_allowed() WARNs when kvm_get_cap_for_kvm_ioctl() doesn't\nfind the ioctl number in vm_ioctl_caps[], and kvm_arch_vm_ioctl() calls\nit for every number the generic code doesn't handle, so\nioctl(vm_fd, 0xdeadbeef) from userspace taints a pKVM host and panics it\nunder panic_on_warn. The lookup is fed userspace input: return false,\nand userspace gets the -EINVAL kvm_arch_vm_ioctl() returns for that\nnumber on a host without pKVM."}], "id": "CVE-2026-98470", "lastModified": "2026-10-19T10:18:57.220", "metrics": {}, "published": "2026-10-18T16:16:57.507", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/49d9d295d69d07e850cae35933ba8519e2915f26"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cc53eb5c6515e3221314624a22c9da9c80a67f63"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: KVM: arm64: Don't WARN on an unknown VM ioctl in protected mode", "id": "2554837", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2554837"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-617", "details": ["A flaw was found in the Linux kernel's KVM (Kernel-based Virtual Machine) subsystem for ARM64. This vulnerability allows a local attacker to cause a Denial of Service (DoS). When running in protected mode, the kernel issues an internal warning upon receiving an unknown virtual machine I/O control (IOCTL) command from userspace. On hosts configured to panic on kernel warnings, this causes the host operating system to crash."], "name": "CVE-2026-98470", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98470\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98470\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98470.mbox"], "threat_severity": "Moderate"}