{"id":"CVE-2026-98004","summary":"iommu/riscv: Serialize command queue publishing","details":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/riscv: Serialize command queue publishing\n\nSerialize command queue publishing so software producer state advances only\nafter a command is written and the hardware tail is updated. Wait for\nhardware consumption outside the queue lock when the command queue is full\nso other CPUs are not blocked behind a long poll.","modified":"2026-09-26T03:48:31.428328257Z","published":"2026-09-25T10:23:31.134Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98004.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6d4c12ab9ab8db87411c863a54e0e97f9197afde"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ca58afa40946acd252a50fa4d4a86f15847a3d7d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98004.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98004"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"856c0cfe5c5f6a2cc8d995872eb67bff9c68c57c"},{"fixed":"6d4c12ab9ab8db87411c863a54e0e97f9197afde"},{"fixed":"ca58afa40946acd252a50fa4d4a86f15847a3d7d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98004.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"7.2.7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98004.json"}}],"schema_version":"1.9.0"}