{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89912", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.774Z", "datePublished": "2026-09-16T10:32:09.272Z", "dateUpdated": "2026-10-19T08:54:45.729Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:54:45.729Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: vgic-its: Don't dereference a NULL collection on ITT save\n\nMAPC with V=0 drops ite->collection but leaves the ITE on the device's\nITT list, and vgic_its_save_ite() dereferences it unconditionally. A\nguest that issues MAPD, MAPTI and then MAPC(V=0) therefore oopses the\nhost when the VMM issues KVM_DEV_ARM_ITS_SAVE_TABLES to migrate it.\nThat sequence is UNPREDICTABLE per the architecture, but KVM already\nhandles the resulting state in the translate, MOVI and DISCARD paths.\n\nSave a zeroed entry, which vgic_its_restore_ite() reads back as\ninvalid. Skipping the ITE instead would leave the ITT slot holding\nwhatever is in guest memory, and restore rejects an entry naming a\ncollection the restored collection table does not have."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The NULL dereference is reached only via the local KVM ioctl KVM_SET_DEVICE_ATTR(KVM_DEV_ARM_ITS_SAVE_TABLES) after the guest programs in-kernel GICv3 ITS MMIO (MAPD/MAPTI/MAPC or GITS_BASER); it is not triggered by network packets, adjacent-radio frames, or a physical device.\nAC:L - A guest can deterministically issue MAPD, MAPTI, then MAPC with V=0, or clear GITS_BASER collection Valid, leaving ITEs on the ITT with a NULL collection; SAVE_TABLES then always dereferences it with no race or attacker-uncontrollable host layout.\nPR:N - The highest-impact case is a cloud VM tenant who needs no host privileges: they program the ITS from guest EL1 and the host oopses when the hypervisor saves ITS tables during automated live migration, without host root, capabilities, or tenant access to /dev/kvm.\nUI:N - No extra victim action is required beyond normal hypervisor operations such as automated live migration or snapshot save that invoke SAVE_TABLES; 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{"bugzilla": {"description": "kernel: KVM: arm64: vgic-its: Don't dereference a NULL collection on ITT save", "id": "2535138", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2535138"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["A flaw was found in the Linux kernel's KVM (Kernel-based Virtual Machine) for ARM64 architecture, specifically within the vgic-its component. A malicious guest virtual machine could trigger a null pointer dereference on the host system during a migration save operation. This could lead to a denial of service for the host."], "name": "CVE-2026-89912", "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:10", "fix_state": "Fix deferred", "package_name": "kernel-rt", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-89912\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-89912\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89912.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": ["*"], "status": "affected", "versions": {"scheme": "code_commit", "value": "[eff484e0298da5a4d18ca82f5454c557fd942af5,3d4c26b16a04a084fe0bde08ccdd8086570f8bbe)"}}, {"platform": ["*"], "status": "affected", "versions": {"scheme": "code_commit", "value": "[eff484e0298da5a4d18ca82f5454c557fd942af5,36df368861d2664291298feeb37dfef43fcae670)"}}, {"platform": ["*"], "status": "affected", "versions": {"scheme": "code_commit", "value": "[eff484e0298da5a4d18ca82f5454c557fd942af5,c6c156d931c33b92362383cf76f6d6e1291dcbfe)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": ["*"], "status": "affected", "versions": {"scheme": "generic", "value": "4.12"}}, {"platform": ["*"], "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.12)"}}, {"platform": ["*"], "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.51,6.19.0)"}}, {"platform": ["*"], "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.5,7.3.0)"}}, {"platform": ["*"], "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-16T21:00:07.238399+00:00", "updated": "2026-09-18T08:00:06.775317+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}