CVE-2025-40130 (GCVE-0-2025-40130)

Vulnerability from cvelistv5 – Published: 2025-11-12 10:23 – Updated: 2025-12-01 06:18
VLAI?
Title
scsi: ufs: core: Fix data race in CPU latency PM QoS request handling
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Fix data race in CPU latency PM QoS request handling The cpu_latency_qos_add/remove/update_request interfaces lack internal synchronization by design, requiring the caller to ensure thread safety. The current implementation relies on the 'pm_qos_enabled' flag, which is insufficient to prevent concurrent access and cannot serve as a proper synchronization mechanism. This has led to data races and list corruption issues. A typical race condition call trace is: [Thread A] ufshcd_pm_qos_exit() --> cpu_latency_qos_remove_request() --> cpu_latency_qos_apply(); --> pm_qos_update_target() --> plist_del <--(1) delete plist node --> memset(req, 0, sizeof(*req)); --> hba->pm_qos_enabled = false; [Thread B] ufshcd_devfreq_target --> ufshcd_devfreq_scale --> ufshcd_scale_clks --> ufshcd_pm_qos_update <--(2) pm_qos_enabled is true --> cpu_latency_qos_update_request --> pm_qos_update_target --> plist_del <--(3) plist node use-after-free Introduces a dedicated mutex to serialize PM QoS operations, preventing data races and ensuring safe access to PM QoS resources, including sysfs interface reads.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2777e73fc154e2e87233bdcc0e2402b33815198e , < d9df61afb8d23c475f1be3c714da2c34c156ab01 (git)
Affected: 2777e73fc154e2e87233bdcc0e2402b33815198e , < 79dde5f7dc7c038eec903745dc1550cd4139980e (git)
Create a notification for this product.
    Linux Linux Affected: 6.9
Unaffected: 0 , < 6.9 (semver)
Unaffected: 6.17.3 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/ufs/core/ufs-sysfs.c",
            "drivers/ufs/core/ufshcd.c",
            "include/ufs/ufshcd.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d9df61afb8d23c475f1be3c714da2c34c156ab01",
              "status": "affected",
              "version": "2777e73fc154e2e87233bdcc0e2402b33815198e",
              "versionType": "git"
            },
            {
              "lessThan": "79dde5f7dc7c038eec903745dc1550cd4139980e",
              "status": "affected",
              "version": "2777e73fc154e2e87233bdcc0e2402b33815198e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/ufs/core/ufs-sysfs.c",
            "drivers/ufs/core/ufshcd.c",
            "include/ufs/ufshcd.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.3",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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 \u0027pm_qos_enabled\u0027 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  --\u003e cpu_latency_qos_remove_request()\n    --\u003e cpu_latency_qos_apply();\n      --\u003e pm_qos_update_target()\n        --\u003e plist_del              \u003c--(1) delete plist node\n    --\u003e memset(req, 0, sizeof(*req));\n  --\u003e hba-\u003epm_qos_enabled = false;\n\n[Thread B]\nufshcd_devfreq_target\n  --\u003e ufshcd_devfreq_scale\n    --\u003e ufshcd_scale_clks\n      --\u003e ufshcd_pm_qos_update     \u003c--(2) pm_qos_enabled is true\n        --\u003e cpu_latency_qos_update_request\n          --\u003e pm_qos_update_target\n            --\u003e plist_del          \u003c--(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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-01T06:18:35.909Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "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"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40130",
    "datePublished": "2025-11-12T10:23:21.605Z",
    "dateReserved": "2025-04-16T07:20:57.170Z",
    "dateUpdated": "2025-12-01T06:18:35.909Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-40130\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-11-12T11:15:42.637\",\"lastModified\":\"2025-11-12T16:19:12.850\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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 \u0027pm_qos_enabled\u0027 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  --\u003e cpu_latency_qos_remove_request()\\n    --\u003e cpu_latency_qos_apply();\\n      --\u003e pm_qos_update_target()\\n        --\u003e plist_del              \u003c--(1) delete plist node\\n    --\u003e memset(req, 0, sizeof(*req));\\n  --\u003e hba-\u003epm_qos_enabled = false;\\n\\n[Thread B]\\nufshcd_devfreq_target\\n  --\u003e ufshcd_devfreq_scale\\n    --\u003e ufshcd_scale_clks\\n      --\u003e ufshcd_pm_qos_update     \u003c--(2) pm_qos_enabled is true\\n        --\u003e cpu_latency_qos_update_request\\n          --\u003e pm_qos_update_target\\n            --\u003e plist_del          \u003c--(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.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/79dde5f7dc7c038eec903745dc1550cd4139980e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d9df61afb8d23c475f1be3c714da2c34c156ab01\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.