{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90422",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.814Z",
        "datePublished": "2026-09-17T16:09:45.830Z",
        "dateUpdated": "2026-10-21T12:51:35.803Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:51:35.803Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: mediatek: pllfh: Fix IO remapping leak in register_pllfhs error path\n\nWhen mtk_clk_register_pllfhs function fails to register a PLL, it\nunregisters all PLLs and cleans up itself in its error path before\nreturning, so the function callers don't need to do it.\n\nBut contrary to mtk_clk_unregister_pllfhs function, that does almost\nthe same sequence, it does not free the IO memory mapped on fhctl node,\nleading to a leak.\n\nFix this leak by factorizing the cleanup sequence in a new private\nfunction and use it both mtk_clk_register_pllfhs and\nmtk_clk_unregister_pllfhs functions.\n\nAlso, change the loop index start value to avoid the -1 operation on\nindex at each loop."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/clk/mediatek/clk-pllfh.c"
                    ],
                    "versions": [
                        {
                            "version": "d7964de8a8ea800910fdd4e365c42a9e7d5c54aa",
                            "lessThan": "6e3e93bc718c4fea556d7ca5fba07ab3511c9918",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d7964de8a8ea800910fdd4e365c42a9e7d5c54aa",
                            "lessThan": "111235106099019b8a8d1947dc5c2674e0329ffa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d7964de8a8ea800910fdd4e365c42a9e7d5c54aa",
                            "lessThan": "d35e45e5bad4fabcf122126402b6c6dcb4379672",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d7964de8a8ea800910fdd4e365c42a9e7d5c54aa",
                            "lessThan": "fea0b4fd891a2af77b55e05b950e7ea55b5d234e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d7964de8a8ea800910fdd4e365c42a9e7d5c54aa",
                            "lessThan": "540d91480bcb1b28a62d7023aa70947ea44c55b9",
                            "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/clk/mediatek/clk-pllfh.c"
                    ],
                    "versions": [
                        {
                            "version": "6.2",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.2",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.114",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "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": "6.2",
                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "6.12.114"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/6e3e93bc718c4fea556d7ca5fba07ab3511c9918"
                },
                {
                    "url": "https://git.kernel.org/stable/c/111235106099019b8a8d1947dc5c2674e0329ffa"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d35e45e5bad4fabcf122126402b6c6dcb4379672"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fea0b4fd891a2af77b55e05b950e7ea55b5d234e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/540d91480bcb1b28a62d7023aa70947ea44c55b9"
                }
            ],
            "title": "clk: mediatek: pllfh: Fix IO remapping leak in register_pllfhs error path",
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                "engine": "bippy-1.2.0"
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    }
}