{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-40130",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T07:20:57.170Z",
        "datePublished": "2025-11-12T10:23:21.605Z",
        "dateUpdated": "2026-05-11T21:43:19.987Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:43:19.987Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ufs: core: Fix data race in CPU latency PM QoS request handling\n\nThe cpu_latency_qos_add/remove/update_request interfaces lack internal\nsynchronization by design, requiring the caller to ensure thread safety.\nThe current implementation relies on the 'pm_qos_enabled' flag, which is\ninsufficient to prevent concurrent access and cannot serve as a proper\nsynchronization mechanism. This has led to data races and list\ncorruption issues.\n\nA typical race condition call trace is:\n\n[Thread A]\nufshcd_pm_qos_exit()\n  --> cpu_latency_qos_remove_request()\n    --> cpu_latency_qos_apply();\n      --> pm_qos_update_target()\n        --> plist_del              <--(1) delete plist node\n    --> memset(req, 0, sizeof(*req));\n  --> hba->pm_qos_enabled = false;\n\n[Thread B]\nufshcd_devfreq_target\n  --> ufshcd_devfreq_scale\n    --> ufshcd_scale_clks\n      --> ufshcd_pm_qos_update     <--(2) pm_qos_enabled is true\n        --> cpu_latency_qos_update_request\n          --> pm_qos_update_target\n            --> plist_del          <--(3) plist node use-after-free\n\nIntroduces a dedicated mutex to serialize PM QoS operations, preventing\ndata races and ensuring safe access to PM QoS resources, including sysfs\ninterface reads."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/ufs/core/ufs-sysfs.c",
                        "drivers/ufs/core/ufshcd.c",
                        "include/ufs/ufshcd.h"
                    ],
                    "versions": [
                        {
                            "version": "2777e73fc154e2e87233bdcc0e2402b33815198e",
                            "lessThan": "d9df61afb8d23c475f1be3c714da2c34c156ab01",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2777e73fc154e2e87233bdcc0e2402b33815198e",
                            "lessThan": "79dde5f7dc7c038eec903745dc1550cd4139980e",
                            "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/ufs/core/ufs-sysfs.c",
                        "drivers/ufs/core/ufshcd.c",
                        "include/ufs/ufshcd.h"
                    ],
                    "versions": [
                        {
                            "version": "6.9",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.9",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17.3",
                            "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:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9",
                                    "versionEndExcluding": "6.17.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9",
                                    "versionEndExcluding": "6.18"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/d9df61afb8d23c475f1be3c714da2c34c156ab01"
                },
                {
                    "url": "https://git.kernel.org/stable/c/79dde5f7dc7c038eec903745dc1550cd4139980e"
                }
            ],
            "title": "scsi: ufs: core: Fix data race in CPU latency PM QoS request handling",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}