{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-40346",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T07:20:57.187Z",
        "datePublished": "2025-12-16T13:30:20.395Z",
        "dateUpdated": "2026-05-11T21:47:35.335Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:47:35.335Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narch_topology: Fix incorrect error check in topology_parse_cpu_capacity()\n\nFix incorrect use of PTR_ERR_OR_ZERO() in topology_parse_cpu_capacity()\nwhich causes the code to proceed with NULL clock pointers. The current\nlogic uses !PTR_ERR_OR_ZERO(cpu_clk) which evaluates to true for both\nvalid pointers and NULL, leading to potential NULL pointer dereference\nin clk_get_rate().\n\nPer include/linux/err.h documentation, PTR_ERR_OR_ZERO(ptr) returns:\n\"The error code within @ptr if it is an error pointer; 0 otherwise.\"\n\nThis means PTR_ERR_OR_ZERO() returns 0 for both valid pointers AND NULL\npointers. Therefore !PTR_ERR_OR_ZERO(cpu_clk) evaluates to true (proceed)\nwhen cpu_clk is either valid or NULL, causing clk_get_rate(NULL) to be\ncalled when of_clk_get() returns NULL.\n\nReplace with !IS_ERR_OR_NULL(cpu_clk) which only proceeds for valid\npointers, preventing potential NULL pointer dereference in clk_get_rate()."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/base/arch_topology.c"
                    ],
                    "versions": [
                        {
                            "version": "b8fe128dad8f97cc9af7c55a264d1fc5ab677195",
                            "lessThan": "64da320252e43456cc9ec3055ff567f168467b37",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b8fe128dad8f97cc9af7c55a264d1fc5ab677195",
                            "lessThan": "02fbea0864fd4a863671f5d418129258d7159f68",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b8fe128dad8f97cc9af7c55a264d1fc5ab677195",
                            "lessThan": "a77f8434954cb1e9c42c3854e40855fdcf5ab235",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b8fe128dad8f97cc9af7c55a264d1fc5ab677195",
                            "lessThan": "3373f263bb647fcc3b5237cfaef757633b9ee25e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b8fe128dad8f97cc9af7c55a264d1fc5ab677195",
                            "lessThan": "45379303124487db3a81219af7565d41f498167f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b8fe128dad8f97cc9af7c55a264d1fc5ab677195",
                            "lessThan": "3a01b2614e84361aa222f67bc628593987e5cdb2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b8fe128dad8f97cc9af7c55a264d1fc5ab677195",
                            "lessThan": "2eead19334516c8e9927c11b448fbe512b1f18a1",
                            "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/base/arch_topology.c"
                    ],
                    "versions": [
                        {
                            "version": "5.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.246",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.196",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.158",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.115",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.56",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17.6",
                            "lessThanOrEqual": "6.17.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18",
                            "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:*:*:*:*:*:*:*:*",
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                                },
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                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.17.6"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/64da320252e43456cc9ec3055ff567f168467b37"
                },
                {
                    "url": "https://git.kernel.org/stable/c/02fbea0864fd4a863671f5d418129258d7159f68"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a77f8434954cb1e9c42c3854e40855fdcf5ab235"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3373f263bb647fcc3b5237cfaef757633b9ee25e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/45379303124487db3a81219af7565d41f498167f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3a01b2614e84361aa222f67bc628593987e5cdb2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2eead19334516c8e9927c11b448fbe512b1f18a1"
                }
            ],
            "title": "arch_topology: Fix incorrect error check in topology_parse_cpu_capacity()",
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}