{"id":"CVE-2023-54034","summary":"iommufd: Make sure to zero vfio_iommu_type1_info before copying to user","details":"In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Make sure to zero vfio_iommu_type1_info before copying to user\n\nMissed a zero initialization here. Most of the struct is filled with\na copy_from_user(), however minsz for that copy is smaller than the\nactual struct by 8 bytes, thus we don't fill the padding.","modified":"2026-03-20T12:33:24.811079Z","published":"2025-12-24T10:56:01.509Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54034.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/7adcec686e4d699c169d34c722132b2bce5232cb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b3551ead616318ea155558cdbe7e91495b8d9b33"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54034.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-54034"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"d624d6652a65ad4f47a58b8651a1ec1163bb81d3"},{"fixed":"7adcec686e4d699c169d34c722132b2bce5232cb"},{"fixed":"b3551ead616318ea155558cdbe7e91495b8d9b33"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-54034.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.2.3"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-54034.json"}}],"schema_version":"1.7.5"}