{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98201",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.324Z",
        "datePublished": "2026-10-06T08:44:38.952Z",
        "dateUpdated": "2026-10-19T09:15:32.269Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:15:32.269Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: zero ff_effect before compat copy in input_ff_effect_from_user\n\nIn the compat path input_ff_effect_from_user() aliases the caller's\nnative struct ff_effect with the smaller struct ff_effect_compat and\ncopies only the compat sized prefix:\n\n\tcompat_effect = (struct ff_effect_compat *)effect;\n\n\tif (copy_from_user(compat_effect, buffer,\n\t\t\t   sizeof(struct ff_effect_compat)))\n\nThe tail of the native structure is never written. Callers pass an\nuninitialized on-stack object, for example evdev_do_ioctl() for\nEVIOCSFF, so those bytes keep their previous stack contents.\ninput_ff_upload() then stores the full native structure in\nff->effects[id], from where a uinput based force feedback daemon can\nread it back via UI_BEGIN_FF_UPLOAD, disclosing kernel stack memory to\nuserspace.\n\nZero the effect before the compat copy."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/input/input-compat.c"
                    ],
                    "versions": [
                        {
                            "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
                            "lessThan": "ed0905fda39682d3da7937184397d3276abbffa8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
                            "lessThan": "ec174c2ab1abb76b20fa167c6db848c3d97aa838",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
                            "lessThan": "6c26681c5668c973bd0e951407d670ac60d9cd66",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
                            "lessThan": "c5e573bb095d502be7cbbaa99c26a20984111c6d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
                            "lessThan": "b878720e8bcaa4cf7163a5081f904dd6baf11b2c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
                            "lessThan": "0d05b43b55d4784a42ce8fb318175f8ad7d9af5a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
                            "lessThan": "ed0406e490f48ed180df140fe2a81be26bccb1a9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
                            "lessThan": "f84819ef8d66931ee3998fee3c4f03230f4cb6cc",
                            "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/input/input-compat.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.29",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.29",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.271",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.222",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.112",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.54",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.8",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "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": "2.6.29",
                                    "versionEndExcluding": "5.10.271"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "5.15.222"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "6.1.189"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "6.6.158"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "6.12.112"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "6.18.54"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "7.2.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/ed0905fda39682d3da7937184397d3276abbffa8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ec174c2ab1abb76b20fa167c6db848c3d97aa838"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6c26681c5668c973bd0e951407d670ac60d9cd66"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c5e573bb095d502be7cbbaa99c26a20984111c6d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b878720e8bcaa4cf7163a5081f904dd6baf11b2c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0d05b43b55d4784a42ce8fb318175f8ad7d9af5a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ed0406e490f48ed180df140fe2a81be26bccb1a9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f84819ef8d66931ee3998fee3c4f03230f4cb6cc"
                }
            ],
            "title": "Input: zero ff_effect before compat copy in input_ff_effect_from_user",
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                "engine": "bippy-1.2.0"
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    }
}