fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info_CVE-2026-46065

{
    "lastseen": "",
    "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.",
    "published": "2026-05-27T12:57:32.968Z",
    "modified": "2026-05-30T10:47:12.943Z",
    "type": "cve",
    "title": "fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/2a40f8bc9bb713329f1c35ffc199ee961a7135b0\nhttps://git.kernel.org/stable/c/2b53d3a52e8e5403a4f4fb57ac6cad3fd2cb1066\nhttps://git.kernel.org/stable/c/25c2b77bc463f29ee71a54b883548baf9386a0db\nhttps://git.kernel.org/stable/c/a0aafb421dd15e935d81543152617f2742cefa70\nhttps://git.kernel.org/stable/c/9ded47ad003f09a94b6a710b5c47f4aa5ceb7429",
    "id": "CVE-2026-46065",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 60b59beafba875aef6d378078bce0baf2287ae14\nLinux Linux 60b59beafba875aef6d378078bce0baf2287ae14\nLinux Linux 60b59beafba875aef6d378078bce0baf2287ae14\nLinux Linux 60b59beafba875aef6d378078bce0baf2287ae14\nLinux Linux 60b59beafba875aef6d378078bce0baf2287ae14\nLinux Linux 2.6.22",
    "sourceHref": "",
    "cvss": {
        "score": 7.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
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        "privilegesRequired": "",
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        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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            "baseScore": 0,
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "60b59beafba875aef6d378078bce0baf2287ae14",
    "vendor": "Linux",
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    "ai_score": 0
}