{"schema":"threatline.record/2","record":{"id":"CVE-2026-98465","aliases":[],"summary":"RISC-V: KVM: Serialize IMSIC attributes with vCPU migration","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nRISC-V: KVM: Serialize IMSIC attributes with vCPU migration\n\nKVM device ioctls are not serialized against KVM_RUN. As a result,\nkvm_riscv_aia_imsic_rw_attr() can snapshot the physical CPU and HGEI of\nan IMSIC VS-file before a concurrent vCPU migration releases it.\n\nThe HGEI can then be allocated to another vCPU before imsic_vsfile_rw()\nuses the stale tuple. A GET or SET attribute may consequently access the\nnew owner's interrupt file.\n\nSerialize the entire IMSIC attribute operation with the target vCPU\nmutex. This prevents the VS-file from being migrated and recycled until\nthe attribute access completes. Acquire the mutex killably so that the\ndevice ioctl remains interruptible while waiting for KVM_RUN to finish.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98465","source_modified_at":"2026-10-24T14:08:57.467Z","fetched_at":"2026-10-24T14:26:37.433577Z","product":"Linux","vendor":"Linux","versions":[{"version":"db8b7e97d6137a28b2bfc07e591d54da268f0c36","lessThan":"6c2bcf6b173d4afed883cceea9d47f2c5194161d","status":"affected","versionType":"git"},{"version":"db8b7e97d6137a28b2bfc07e591d54da268f0c36","lessThan":"a29c5d2dd2ef9a8617a9a6d5585696d5f149cd98","status":"affected","versionType":"git"},{"version":"db8b7e97d6137a28b2bfc07e591d54da268f0c36","lessThan":"c525772c304c971b0d3a1f2898dedbae653efe90","status":"affected","versionType":"git"},{"version":"db8b7e97d6137a28b2bfc07e591d54da268f0c36","lessThan":"71acbea44e78665ea90e3c310fca6bbdcc0252db","status":"affected","versionType":"git"},{"version":"db8b7e97d6137a28b2bfc07e591d54da268f0c36","lessThan":"8ae12ccaec6ec74945d8c1ef39f2c1b8df779abc","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98465","source_modified_at":"2026-10-24T14:08:57.467Z","fetched_at":"2026-10-24T14:26:37.433577Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.5","status":"affected"},{"version":"0","lessThan":"6.5","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","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":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98465","source_modified_at":"2026-10-24T14:08:57.467Z","fetched_at":"2026-10-24T14:26:37.433577Z","package":{"name":"Linux","ecosystem":null},"version":"6c2bcf6b173d4afed883cceea9d47f2c5194161d","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98465","source_modified_at":"2026-10-24T14:08:57.467Z","fetched_at":"2026-10-24T14:26:37.433577Z","package":{"name":"Linux","ecosystem":null},"version":"71acbea44e78665ea90e3c310fca6bbdcc0252db","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98465","source_modified_at":"2026-10-24T14:08:57.467Z","fetched_at":"2026-10-24T14:26:37.433577Z","package":{"name":"Linux","ecosystem":null},"version":"8ae12ccaec6ec74945d8c1ef39f2c1b8df779abc","basis":"first unaffected version stated in the CVE record"}],"cvss":7,"severity":"High","kev":{"listed":false},"epss":{"probability":0.002,"percentile":0.09333,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:15:17.498Z","modified_at":"2026-10-24T14:08:57.467Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98465","fetched_at":"2026-10-24T14:26:37.433577Z","source_modified_at":"2026-10-24T14:08:57.467Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98465","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/6c2bcf6b173d4afed883cceea9d47f2c5194161d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/a29c5d2dd2ef9a8617a9a6d5585696d5f149cd98"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/c525772c304c971b0d3a1f2898dedbae653efe90"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/71acbea44e78665ea90e3c310fca6bbdcc0252db"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/8ae12ccaec6ec74945d8c1ef39f2c1b8df779abc"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-24T14:08:57.467Z","content_hash":"360165a31ef0c565379fa65f9e1157ac9ab86e7602f7c805efc4ff69f125b1f7"}}