{"schema":"threatline.record/2","record":{"id":"CVE-2026-98637","aliases":[],"summary":"KVM: arm64: Do not clear VM-wide SVE feature on vCPU init failure","details":"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.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98637","source_modified_at":"2026-10-19T09:23:07.105Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"5db1bef933427aa467ad89c7b695a84a6b4afe16","lessThan":"bd46b41f412fb81c50bac1a0929ec31320f3a807","status":"affected","versionType":"git"},{"version":"5db1bef933427aa467ad89c7b695a84a6b4afe16","lessThan":"f0cd8ffae092cc1b9d7cfa9188ed5a88a374adcb","status":"affected","versionType":"git"},{"version":"5db1bef933427aa467ad89c7b695a84a6b4afe16","lessThan":"a1b3c788ad31837e348075e93dbba3f447492776","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98637","source_modified_at":"2026-10-19T09:23:07.105Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.16","status":"affected"},{"version":"0","lessThan":"6.16","status":"unaffected","versionType":"semver"},{"version":"6.18.55","lessThanOrEqual":"6.18.*","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"}],"defaultStatus":"affected"}],"fixed_versions":[],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00166,"percentile":0.0552,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:20:08.157Z","modified_at":"2026-10-19T09:23:07.105Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98637","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:23:07.105Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98637","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/bd46b41f412fb81c50bac1a0929ec31320f3a807"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/f0cd8ffae092cc1b9d7cfa9188ed5a88a374adcb"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/a1b3c788ad31837e348075e93dbba3f447492776"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:23:07.105Z","content_hash":"d1aa03e64a0ae545dc3f0c615f3134b9b7d3a79e5b01ebc66a73c30fa08dd395"}}