{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64275",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T15:36:31.776Z",
        "datePublished": "2026-07-25T08:49:20.669Z",
        "dateUpdated": "2026-08-17T04:52:29.928Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T04:52:29.928Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: elan_i2c - prevent division by zero and arithmetic underflow\n\nThe Elan I2C touchpad driver queries the device for its physical\ndimensions and trace counts to calculate the device resolution and width.\nHowever, if the device firmware or device tree provides invalid zero\nvalues for x_traces or y_traces, it results in a fatal division-by-zero\nexception leading to a kernel panic during device probe.\n\nAdd checks to ensure these parameters are non-zero before performing\nthe division. If invalid trace values are detected, fall back to a safe\ndefault of 1.\n\nAdditionally, prevent an arithmetic underflow in the touch reporting\nlogic. Previously, if the calculated or fallback width was smaller than\nETP_FWIDTH_REDUCE (90), the subtraction would underflow, resulting in a\nmassive unsigned integer being reported to userspace. Clamp the adjusted\nwidth to a minimum of 0 to safely handle small physical dimensions and\nfallback scenarios.\n\nCompleting the probe with safe fallback values ensures the sysfs nodes\nare created, keeping the firmware update path intact so a recovery\nfirmware can be flashed to the device."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/input/mouse/elan_i2c_core.c"
                    ],
                    "versions": [
                        {
                            "version": "6696777c6506fa52b2a0282121195843ed855be6",
                            "lessThan": "59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6696777c6506fa52b2a0282121195843ed855be6",
                            "lessThan": "f6d10af2036d1d4a847a74fe47ebbf93bce3c84c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6696777c6506fa52b2a0282121195843ed855be6",
                            "lessThan": "2f281ff0163a38fdc4cb4061f0c241e643283a5e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6696777c6506fa52b2a0282121195843ed855be6",
                            "lessThan": "8c1db3418a419e788691746b9c47f863c2fd4890",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6696777c6506fa52b2a0282121195843ed855be6",
                            "lessThan": "feb4866a42ec94764c7eb58012256f6f37664727",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6696777c6506fa52b2a0282121195843ed855be6",
                            "lessThan": "01e0317c256c560d8dcce2e9825eb6142ee34611",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6696777c6506fa52b2a0282121195843ed855be6",
                            "lessThan": "6bac57d8fe2a077b8a85b4140eeb7999078158eb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6696777c6506fa52b2a0282121195843ed855be6",
                            "lessThan": "df2b818fa009c10ff6ba875a1663ff001cda9558",
                            "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/mouse/elan_i2c_core.c"
                    ],
                    "versions": [
                        {
                            "version": "3.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.261",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.212",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.178",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.96",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.39",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.4",
                            "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": "3.19",
                                    "versionEndExcluding": "5.10.261"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.19",
                                    "versionEndExcluding": "5.15.212"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.19",
                                    "versionEndExcluding": "6.1.178"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.19",
                                    "versionEndExcluding": "6.6.145"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.19",
                                    "versionEndExcluding": "6.12.96"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.19",
                                    "versionEndExcluding": "6.18.39"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.19",
                                    "versionEndExcluding": "7.1.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.19",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f6d10af2036d1d4a847a74fe47ebbf93bce3c84c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2f281ff0163a38fdc4cb4061f0c241e643283a5e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8c1db3418a419e788691746b9c47f863c2fd4890"
                },
                {
                    "url": "https://git.kernel.org/stable/c/feb4866a42ec94764c7eb58012256f6f37664727"
                },
                {
                    "url": "https://git.kernel.org/stable/c/01e0317c256c560d8dcce2e9825eb6142ee34611"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6bac57d8fe2a077b8a85b4140eeb7999078158eb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/df2b818fa009c10ff6ba875a1663ff001cda9558"
                }
            ],
            "title": "Input: elan_i2c - prevent division by zero and arithmetic underflow",
            "x_generator": {
                "engine": "bippy-1.2.0"
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    }
}