{"id":"CVE-2026-53322","summary":"vfio/pci: Clean up DMABUFs before disabling function","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/pci: Clean up DMABUFs before disabling function\n\nOn device shutdown, make vfio_pci_core_close_device() call\nvfio_pci_dma_buf_cleanup() before the function is disabled via\nvfio_pci_core_disable().  This ensures that all access via DMABUFs is\nrevoked before the function's BARs become inaccessible.\n\nThis fixes an issue where, if the function is disabled first, a tiny\nwindow exists in which the function's MSE is cleared and yet BARs\ncould still be accessed via the DMABUF.  The resources would also be\nfreed and up for grabs by a different driver.","modified":"2026-07-16T03:32:27.244682855Z","published":"2026-06-26T19:41:13.245Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53322.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/4f1000a30f67cf7d328059242776a858611d5ef9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d97708701434ce72968e771976aaf9d3438fcafd"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53322.json"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-53322"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53322.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53322"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2493709"},{"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":"5d74781ebc86c5fa9e9d6934024c505412de9b52"},{"fixed":"4f1000a30f67cf7d328059242776a858611d5ef9"},{"fixed":"d97708701434ce72968e771976aaf9d3438fcafd"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-53322.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-53322.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}