{"id":"CVE-2026-89932","revision":"d111a1a9cdf74026a3b29872cecc7c53","records":[{"revision":"d111a1a9cdf74026a3b29872cecc7c53","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89932","aliases":[],"title":"KVM: nVMX: Always flush vpid02 on first use","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: nVMX: Always flush vpid02 on first use\n\nMake sure vpid02 is always flushed on first use by setting last_vpid=0\nwhen allocating vpid02.  nested_vmx_transition_tlb_flush() will always\ndetect a VPID change on first VM-Enter after VMXON, because VPID=0 in\nvmcs12 is not allowed if L1 enables VPID.\n\nThis avoids using stale TLB entries from a previous lifetime of the\nVPID, that might have been associated with a different vCPU (or a\ncompletely different VM).\n\nNote that last_vpid is already being initialized as 0 when the vCPU is\ncreated, but it is not reset when vpid02 is freed on VMXOFF. Hence, the\nproblem can only occur if L1 does VMXOFF -> VMXON, runs an L2, and KVM\nhappens to reuse a VPID that has TLB entries on the physical CPU.","state":0,"publishedAt":"2026-09-16T10:32:22.886+00:00","modifiedAt":"2026-10-19T08:55:06.898+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"arch/x86/kvm/vmx/nested.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5c614b3583e7b6dab0c86356fa36c2bcbb8322a0\",\n                            \"lessThan\": \"26de0d2d9a8d14c03e5ebb25fd68b5bfcd5ac366\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5c614b3583e7b6dab0c86356fa36c2bcbb8322a0\",\n                            \"lessThan\": \"8bc609999ec223089fec8d74c7de27d689606b36\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5c614b3583e7b6dab0c86356fa36c2bcbb8322a0\",\n                            \"lessThan\": \"62604376c313178811375f40a282fc2a46cd2311\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5c614b3583e7b6dab0c86356fa36c2bcbb8322a0\",\n                            \"lessThan\": \"8b98d662ab24f34710a56e03bc9169e4a5508606\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5c614b3583e7b6dab0c86356fa36c2bcbb8322a0\",\n                            \"lessThan\": \"22dfcc22c95e91295119a1c3b469816ce44c4804\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5c614b3583e7b6dab0c86356fa36c2bcbb8322a0\",\n                            \"lessThan\": \"121991d150735f3c0f7401678ce4d35c5b4ac898\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5c614b3583e7b6dab0c86356fa36c2bcbb8322a0\",\n                            \"lessThan\": \"f0772389413dce9657c7d6950abf3edbbd511356\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"arch/x86/kvm/vmx/nested.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.4\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.4\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.51\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.5\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/26de0d2d9a8d14c03e5ebb25fd68b5bfcd5ac366","https://git.kernel.org/stable/c/8bc609999ec223089fec8d74c7de27d689606b36","https://git.kernel.org/stable/c/62604376c313178811375f40a282fc2a46cd2311","https://git.kernel.org/stable/c/8b98d662ab24f34710a56e03bc9169e4a5508606","https://git.kernel.org/stable/c/22dfcc22c95e91295119a1c3b469816ce44c4804","https://git.kernel.org/stable/c/121991d150735f3c0f7401678ce4d35c5b4ac898","https://git.kernel.org/stable/c/f0772389413dce9657c7d6950abf3edbbd511356"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89932","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89932","identifiers":["CVE-2026-89932"]},"retained":false,"historicalAffected":[]}],"coverage":[]}