{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-80579",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.769Z",
        "datePublished": "2026-08-26T14:37:37.320Z",
        "dateUpdated": "2026-10-16T19:26:28.024Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-27T05:02:00.629Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: clear fb_info->mode before deleting a videomode\n\nfb_set_var() can delete a mode from info->modelist when userspace\npasses FB_ACTIVATE_INV_MODE through FBIOPUT_VSCREENINFO. The code\nchecks that the mode being deleted is not the current info->var and\nthat fbcon is not using it, but it does not check fb_info->mode.\n\nfb_info->mode may still point into the modelist entry being deleted.\nIf the entry is freed, later mode sysfs reads through show_mode() can\ndereference a stale pointer.\n\nClear fb_info->mode before calling fb_delete_videomode() when it\nmatches the mode being removed."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "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"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:L - The bug is reached only through local framebuffer interfaces—FBIOPUT_VSCREENINFO ioctl on /dev/fb* to delete a videomode and sysfs reads of /sys/class/graphics/fb*/mode via show_mode(); fbdev core has no network, Bluetooth, or remote packet path.\nAC:L - Exploitation is a deterministic state bug, not a race: ioctl with FB_ACTIVATE_INV_MODE frees the modelist kmalloc entry while fb_info->mode still points into it, and a subsequent sysfs mode read reliably dereferences the stale pointer without attacker-uncontrollable timing.\nPR:L - The freeing trigger is FBIOPUT_VSCREENINFO on /dev/fb*, which requires only local framebuffer device access (video group or kiosk/embedded/HMI service accounts), not init-namespace root; sysfs mode reads are world-readable and complete the UAF disclosure path.\nUI:N - No victim interaction is required; the attacker performs ioctl mode deletion and sysfs mode reads through their own local process without needing another user to mount, open, or configure unrelated resources.\nS:U - The use-after-free corrupts kernel heap state within the local fbdev subsystem and does not cross VM, container, or IOMMU boundaries to impact resources under a different security authority.\nC:H - After fb_delete_videomode() kfree()s the fb_modelist object, show_mode()/mode_string() reads flag, vmode, xres, yres, and refresh from freed slab memory and copies attacker-influenced bytes to userspace—a UAF information-disclosure primitive.\nI:H - The dangling fb_info->mode pointer into a freed kmalloc object enables classic heap grooming between ioctl free and sysfs read; reallocated slab contents can be corrupted or confused for control-flow or arbitrary-write primitives beyond the immediate read.\nA:H - Dereferencing the freed fb_videomode structure causes KASAN-detectable use-after-free faults and kernel oops/panic on display-equipped embedded, automotive, kiosk, and console systems running the framebuffer subsystem."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/video/fbdev/core/fbmem.c"
                    ],
                    "versions": [
                        {
                            "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                            "lessThan": "ce7fef961c63229b22dec415fb988899f479d61f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                            "lessThan": "95e647d2a5304a8fd11f1ba3c8502de700650131",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/video/fbdev/core/fbmem.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.12",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.10",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.12",
                                    "versionEndExcluding": "7.1.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.12",
                                    "versionEndExcluding": "7.2"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/ce7fef961c63229b22dec415fb988899f479d61f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/95e647d2a5304a8fd11f1ba3c8502de700650131"
                }
            ],
            "title": "fbdev: clear fb_info->mode before deleting a videomode",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2026-80579",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2026-10-16T19:17:46.592165Z"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-10-16T19:26:28.024Z"
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}