{"id":"CVE-2026-98637","revision":"21f0a5860ab14761bee05b6733c61707","records":[{"revision":"21f0a5860ab14761bee05b6733c61707","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98637","aliases":[],"title":"KVM: arm64: Do not clear VM-wide SVE feature on vCPU init failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Do not clear VM-wide SVE feature on vCPU init failure\n\npkvm_vcpu_init_sve() clears KVM_ARM_VCPU_SVE in kvm->arch.vcpu_features\nwhen it fails, but vcpu_has_sve() tests KVM_ARCH_FLAG_GUEST_HAS_SVE,\nwhich is left set. Later vCPUs on that VM then skip the SVE setup and\nregister with a NULL sve_state, which the guest's first FP access hands\nto sve_load_state().\n\nReturn the error without touching vcpu_features.","state":0,"publishedAt":"2026-10-18T15:20:08.157+00:00","modifiedAt":"2026-10-19T09:23:07.105+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/arm64/kvm/hyp/nvhe/pkvm.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5db1bef933427aa467ad89c7b695a84a6b4afe16\",\n                            \"lessThan\": \"bd46b41f412fb81c50bac1a0929ec31320f3a807\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5db1bef933427aa467ad89c7b695a84a6b4afe16\",\n                            \"lessThan\": \"f0cd8ffae092cc1b9d7cfa9188ed5a88a374adcb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5db1bef933427aa467ad89c7b695a84a6b4afe16\",\n                            \"lessThan\": \"a1b3c788ad31837e348075e93dbba3f447492776\",\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/arm64/kvm/hyp/nvhe/pkvm.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.16\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.16\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.55\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.9\",\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":[],"references":["https://git.kernel.org/stable/c/bd46b41f412fb81c50bac1a0929ec31320f3a807","https://git.kernel.org/stable/c/f0cd8ffae092cc1b9d7cfa9188ed5a88a374adcb","https://git.kernel.org/stable/c/a1b3c788ad31837e348075e93dbba3f447492776"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98637","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98637","identifiers":["CVE-2026-98637"]},"retained":false,"historicalAffected":[]}],"coverage":[]}