{"api_version":"1","generated_at":"2026-08-02T20:26:19+00:00","cve":"CVE-2026-64473","urls":{"html":"https://cve.report/CVE-2026-64473","api":"https://cve.report/api/cve/CVE-2026-64473.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64473","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64473"},"summary":{"title":"vfio: Remove device debugfs before releasing devres","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvfio: Remove device debugfs before releasing devres\n\nVFIO device debugfs files created with debugfs_create_devm_seqfile()\nstore a devres allocated debugfs_devm_entry as inode private data.\nvfio_unregister_group_dev() currently calls vfio_device_del() before\nvfio_device_debugfs_exit(), but device_del() releases devres.  This can\nleave debugfs entries visible with stale inode private data while\nunregister waits for userspace references to drain.\n\nRemove the per-device debugfs tree before vfio_device_del().  The debugfs\nview is diagnostic only, so losing it at the start of unregister is\npreferable to preserving entries whose backing storage may already have\nbeen released.\n\nComplete the teardown by clearing the per-device debugfs root after\nremoval.  This matches the global debugfs root cleanup and prevents\nfuture users from mistaking a removed dentry for a live debugfs tree\nduring the remainder of unregister.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:32","updated_at":"2026-07-25 10:17:32"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/6cc60b41d61657dc469893d14e8e55d160056ff1","name":"https://git.kernel.org/stable/c/6cc60b41d61657dc469893d14e8e55d160056ff1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dc7fe87de492ea7f33a72b78d26650b75bf37f4f","name":"https://git.kernel.org/stable/c/dc7fe87de492ea7f33a72b78d26650b75bf37f4f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a5df401dc84f091e20b045560569f0736758fea7","name":"https://git.kernel.org/stable/c/a5df401dc84f091e20b045560569f0736758fea7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a53109ffb6b5148e11a27fb7670355b92db12dd3","name":"https://git.kernel.org/stable/c/a53109ffb6b5148e11a27fb7670355b92db12dd3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64473","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64473","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2202844e4468c7539dba0c0b06577c93735af952 6cc60b41d61657dc469893d14e8e55d160056ff1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2202844e4468c7539dba0c0b06577c93735af952 a53109ffb6b5148e11a27fb7670355b92db12dd3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2202844e4468c7539dba0c0b06577c93735af952 a5df401dc84f091e20b045560569f0736758fea7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2202844e4468c7539dba0c0b06577c93735af952 dc7fe87de492ea7f33a72b78d26650b75bf37f4f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.8","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.8 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.96 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.39 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.4 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64473","cve":"CVE-2026-64473","epss":"0.001750000","percentile":"0.073340000","score_date":"2026-07-28","updated_at":"2026-07-29 00:05:33"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/vfio/debugfs.c","drivers/vfio/vfio_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6cc60b41d61657dc469893d14e8e55d160056ff1","status":"affected","version":"2202844e4468c7539dba0c0b06577c93735af952","versionType":"git"},{"lessThan":"a53109ffb6b5148e11a27fb7670355b92db12dd3","status":"affected","version":"2202844e4468c7539dba0c0b06577c93735af952","versionType":"git"},{"lessThan":"a5df401dc84f091e20b045560569f0736758fea7","status":"affected","version":"2202844e4468c7539dba0c0b06577c93735af952","versionType":"git"},{"lessThan":"dc7fe87de492ea7f33a72b78d26650b75bf37f4f","status":"affected","version":"2202844e4468c7539dba0c0b06577c93735af952","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/vfio/debugfs.c","drivers/vfio/vfio_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.8"},{"lessThan":"6.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.96","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.96","versionStartIncluding":"6.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.39","versionStartIncluding":"6.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.4","versionStartIncluding":"6.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc2","versionStartIncluding":"6.8","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvfio: Remove device debugfs before releasing devres\n\nVFIO device debugfs files created with debugfs_create_devm_seqfile()\nstore a devres allocated debugfs_devm_entry as inode private data.\nvfio_unregister_group_dev() currently calls vfio_device_del() before\nvfio_device_debugfs_exit(), but device_del() releases devres.  This can\nleave debugfs entries visible with stale inode private data while\nunregister waits for userspace references to drain.\n\nRemove the per-device debugfs tree before vfio_device_del().  The debugfs\nview is diagnostic only, so losing it at the start of unregister is\npreferable to preserving entries whose backing storage may already have\nbeen released.\n\nComplete the teardown by clearing the per-device debugfs root after\nremoval.  This matches the global debugfs root cleanup and prevents\nfuture users from mistaking a removed dentry for a live debugfs tree\nduring the remainder of unregister."}],"providerMetadata":{"dateUpdated":"2026-07-25T08:51:36.702Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/6cc60b41d61657dc469893d14e8e55d160056ff1"},{"url":"https://git.kernel.org/stable/c/a53109ffb6b5148e11a27fb7670355b92db12dd3"},{"url":"https://git.kernel.org/stable/c/a5df401dc84f091e20b045560569f0736758fea7"},{"url":"https://git.kernel.org/stable/c/dc7fe87de492ea7f33a72b78d26650b75bf37f4f"}],"title":"vfio: Remove device debugfs before releasing devres","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64473","datePublished":"2026-07-25T08:51:36.702Z","dateReserved":"2026-07-19T15:36:31.790Z","dateUpdated":"2026-07-25T08:51:36.702Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:32","lastModifiedDate":"2026-07-25 10:17:32","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64473","Ordinal":"1","Title":"vfio: Remove device debugfs before releasing devres","CVE":"CVE-2026-64473","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64473","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nvfio: Remove device debugfs before releasing devres\n\nVFIO device debugfs files created with debugfs_create_devm_seqfile()\nstore a devres allocated debugfs_devm_entry as inode private data.\nvfio_unregister_group_dev() currently calls vfio_device_del() before\nvfio_device_debugfs_exit(), but device_del() releases devres.  This can\nleave debugfs entries visible with stale inode private data while\nunregister waits for userspace references to drain.\n\nRemove the per-device debugfs tree before vfio_device_del().  The debugfs\nview is diagnostic only, so losing it at the start of unregister is\npreferable to preserving entries whose backing storage may already have\nbeen released.\n\nComplete the teardown by clearing the per-device debugfs root after\nremoval.  This matches the global debugfs root cleanup and prevents\nfuture users from mistaking a removed dentry for a live debugfs tree\nduring the remainder of unregister.","Type":"Description","Title":"vfio: Remove device debugfs before releasing devres"}]}}}