{"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": "2026-10-30T12:33:24.892Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:33:24.892Z"}, "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. 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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."}], "id": "CVE-2026-89912", "lastModified": "2026-10-30T13:20:35.513", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 4.0, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-89912", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T19:26:39.091827Z", "version": "2.0.3"}}]}, "published": "2026-09-16T11:17:00.230", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0fb71211146e39cf67811ccb873d2770a9c129ac"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2c3a87ad3d3935c43d465cd2465db9020f9e898f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/36df368861d2664291298feeb37dfef43fcae670"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3d4c26b16a04a084fe0bde08ccdd8086570f8bbe"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/566d0f99aec92280ce403f22068eb07241a79e2a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c6c156d931c33b92362383cf76f6d6e1291dcbfe"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dd0c3e6c03e3bb3fd7c0fa422230020674c5c25e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/df829e4fe235b3a0dbf830986d81c040d3d2e940"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"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"]}