{"api_version":"1","generated_at":"2026-06-01T14:10:11+00:00","cve":"CVE-2026-46065","urls":{"html":"https://cve.report/CVE-2026-46065","api":"https://cve.report/api/cve/CVE-2026-46065.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46065","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46065"},"summary":{"title":"fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info\n\nHold state of deferred I/O in struct fb_deferred_io_state. Allocate an\ninstance as part of initializing deferred I/O and remove it only after\nthe final mapping has been closed. If the fb_info and the contained\ndeferred I/O meanwhile goes away, clear struct fb_deferred_io_state.info\nto invalidate the mapping. Any access will then result in a SIGBUS\nsignal.\n\nFixes a long-standing problem, where a device hot-unplug happens while\nuser space still has an active mapping of the graphics memory. The hot-\nunplug frees the instance of struct fb_info. Accessing the memory will\noperate on undefined state.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-27 14:17:27","updated_at":"2026-05-30 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46065","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 60b59beafba875aef6d378078bce0baf2287ae14 2a40f8bc9bb713329f1c35ffc199ee961a7135b0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 60b59beafba875aef6d378078bce0baf2287ae14 2b53d3a52e8e5403a4f4fb57ac6cad3fd2cb1066 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 60b59beafba875aef6d378078bce0baf2287ae14 25c2b77bc463f29ee71a54b883548baf9386a0db git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 60b59beafba875aef6d378078bce0baf2287ae14 a0aafb421dd15e935d81543152617f2742cefa70 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info\n\nHold state of deferred I/O in struct fb_deferred_io_state. Allocate an\ninstance as part of initializing deferred I/O and remove it only after\nthe final mapping has been closed. If the fb_info and the contained\ndeferred I/O meanwhile goes away, clear struct fb_deferred_io_state.info\nto invalidate the mapping. Any access will then result in a SIGBUS\nsignal.\n\nFixes a long-standing problem, where a device hot-unplug happens while\nuser space still has an active mapping of the graphics memory. The hot-\nunplug frees the instance of struct fb_info. Accessing the memory will\noperate on undefined state."}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-05-30T10:47:12.943Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/2a40f8bc9bb713329f1c35ffc199ee961a7135b0"},{"url":"https://git.kernel.org/stable/c/2b53d3a52e8e5403a4f4fb57ac6cad3fd2cb1066"},{"url":"https://git.kernel.org/stable/c/25c2b77bc463f29ee71a54b883548baf9386a0db"},{"url":"https://git.kernel.org/stable/c/a0aafb421dd15e935d81543152617f2742cefa70"},{"url":"https://git.kernel.org/stable/c/9ded47ad003f09a94b6a710b5c47f4aa5ceb7429"}],"title":"fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46065","datePublished":"2026-05-27T12:57:32.968Z","dateReserved":"2026-05-13T15:03:33.095Z","dateUpdated":"2026-05-30T10:47:12.943Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-27 14:17:27","lastModifiedDate":"2026-05-30 11:17:20","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46065","Ordinal":"1","Title":"fbdev: defio: Disconnect deferred I/O from the lifetime of struc","CVE":"CVE-2026-46065","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46065","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info\n\nHold state of deferred I/O in struct fb_deferred_io_state. Allocate an\ninstance as part of initializing deferred I/O and remove it only after\nthe final mapping has been closed. If the fb_info and the contained\ndeferred I/O meanwhile goes away, clear struct fb_deferred_io_state.info\nto invalidate the mapping. Any access will then result in a SIGBUS\nsignal.\n\nFixes a long-standing problem, where a device hot-unplug happens while\nuser space still has an active mapping of the graphics memory. The hot-\nunplug frees the instance of struct fb_info. Accessing the memory will\noperate on undefined state.","Type":"Description","Title":"fbdev: defio: Disconnect deferred I/O from the lifetime of struc"}]}}}