{"id":"CVE-2026-64475","revision":null,"records":[{"revision":"351200d61e9940b49af699a1bd8aeaba","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64475","aliases":[],"title":"vfio/pci: Release the VGA arbiter client on register_device() failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/pci: Release the VGA arbiter client on register_device() failure\n\nThe re-order in the Fixes commit below displaced vfio_pci_vga_init() as\nthe last failure point of what is now vfio_pci_core_register_device()\nwithout introducing an unwind for the VGA arbiter registration.\n\nIn current kernels this is mostly benign because vfio_pci_set_decode()\nonly uses pci_dev state, but the original failure path could leave a\ncallback with a freed vdev cookie. The stale registration also becomes\nunsafe again once the callback follows drvdata to the vfio device.\n\nAdd the required VGA unwind callout.","state":0,"publishedAt":"2026-07-25T08:51:38.154+00:00","modifiedAt":"2026-10-19T20:48:36.746+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/vfio/pci/vfio_pci_core.c\"\n ],\n \"versions\": [\n {\n \"version\": \"87856f9af04eaacf9848710625a4ffee1d020fa9\",\n \"lessThan\": \"0f2a35a0c7ea7da347b814750eaa78adf3582381\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4aeec3984ddc853f7c65903bde472ffdef738bae\",\n \"lessThan\": \"8d65decde9afd2bd78bcfffdc0df73b82a0b5509\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4aeec3984ddc853f7c65903bde472ffdef738bae\",\n \"lessThan\": \"ef4c38d30b3744e89eb5048218904bb629ea8d47\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4aeec3984ddc853f7c65903bde472ffdef738bae\",\n \"lessThan\": \"9e0a3f642e607848669235f5069f35640abbfc88\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4aeec3984ddc853f7c65903bde472ffdef738bae\",\n \"lessThan\": \"42d758a09d2c46c42357ecde9a5492f015bde2e5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4aeec3984ddc853f7c65903bde472ffdef738bae\",\n \"lessThan\": \"52adb2dff7ce3d8430e2bdc5988b618a430def85\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4aeec3984ddc853f7c65903bde472ffdef738bae\",\n \"lessThan\": \"278a5659c391fe5afe5f9ce1bad1fd24e90144f1\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4aeec3984ddc853f7c65903bde472ffdef738bae\",\n \"lessThan\": \"daedde7f024ecf88bc8e832ed40cf2c795f0796a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"d62dccb417cf972c978bf3c68a7d5e846bcf953e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6694b8daffac5a8661071f085608afc78f7acd08\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5.10.37\",\n \"lessThan\": \"5.10.261\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.11.21\",\n \"lessThan\": \"5.12\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.12.4\",\n \"lessThan\": \"5.13\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/vfio/pci/vfio_pci_core.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.13\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.13\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.261\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.212\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.178\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.145\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.96\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.39\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1.4\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/0f2a35a0c7ea7da347b814750eaa78adf3582381","https://git.kernel.org/stable/c/8d65decde9afd2bd78bcfffdc0df73b82a0b5509","https://git.kernel.org/stable/c/ef4c38d30b3744e89eb5048218904bb629ea8d47","https://git.kernel.org/stable/c/9e0a3f642e607848669235f5069f35640abbfc88","https://git.kernel.org/stable/c/42d758a09d2c46c42357ecde9a5492f015bde2e5","https://git.kernel.org/stable/c/52adb2dff7ce3d8430e2bdc5988b618a430def85","https://git.kernel.org/stable/c/278a5659c391fe5afe5f9ce1bad1fd24e90144f1","https://git.kernel.org/stable/c/daedde7f024ecf88bc8e832ed40cf2c795f0796a"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64475","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64475","identifiers":["CVE-2026-64475"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all 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