Vulnerability-Lookup

GHSA-9RXX-PQ63-85W7

Vulnerability from github – Published: 2025-08-16 12:30 – Updated: 2026-01-22 18:50

Details

In the Linux kernel, the following vulnerability has been resolved:

drm/imagination: Fix kernel crash when hard resetting the GPU

The GPU hard reset sequence calls pm_runtime_force_suspend() and pm_runtime_force_resume(), which according to their documentation should only be used during system-wide PM transitions to sleep states.

The main issue though is that depending on some internal runtime PM state as seen by pm_runtime_force_suspend() (whether the usage count is <= 1), pm_runtime_force_resume() might not resume the device unless needed. If that happens, the runtime PM resume callback pvr_power_device_resume() is not called, the GPU clocks are not re-enabled, and the kernel crashes on the next attempt to access GPU registers as part of the power-on sequence.

Replace calls to pm_runtime_force_suspend() and pm_runtime_force_resume() with direct calls to the driver's runtime PM callbacks, pvr_power_device_suspend() and pvr_power_device_resume(), to ensure clocks are re-enabled and avoid the kernel crash.

Severity

7.1 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38521"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-668"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-16T11:15:45Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/imagination: Fix kernel crash when hard resetting the GPU\n\nThe GPU hard reset sequence calls pm_runtime_force_suspend() and\npm_runtime_force_resume(), which according to their documentation should\nonly be used during system-wide PM transitions to sleep states.\n\nThe main issue though is that depending on some internal runtime PM\nstate as seen by pm_runtime_force_suspend() (whether the usage count is\n\u003c= 1), pm_runtime_force_resume() might not resume the device unless\nneeded. If that happens, the runtime PM resume callback\npvr_power_device_resume() is not called, the GPU clocks are not\nre-enabled, and the kernel crashes on the next attempt to access GPU\nregisters as part of the power-on sequence.\n\nReplace calls to pm_runtime_force_suspend() and\npm_runtime_force_resume() with direct calls to the driver\u0027s runtime PM\ncallbacks, pvr_power_device_suspend() and pvr_power_device_resume(),\nto ensure clocks are re-enabled and avoid the kernel crash.",
  "id": "GHSA-9rxx-pq63-85w7",
  "modified": "2026-01-22T18:50:53Z",
  "published": "2025-08-16T12:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38521"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f852d301f642223c4798f3c13ba15e91165d078"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d38376b3ee48d073c64e75e150510d7e6b4b04f7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e066cc6e0f094ca2120f1928d126d56f686cd73e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-38521 (GCVE-0-2025-38521)

Vulnerability from cvelistv5 – Published: 2025-08-16 10:55 – Updated: 2026-05-11 21:29

Title

drm/imagination: Fix kernel crash when hard resetting the GPU

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/imagination: Fix kernel crash when hard resetting the GPU The GPU hard reset sequence calls pm_runtime_force_suspend() and pm_runtime_force_resume(), which according to their documentation should only be used during system-wide PM transitions to sleep states. The main issue though is that depending on some internal runtime PM state as seen by pm_runtime_force_suspend() (whether the usage count is <= 1), pm_runtime_force_resume() might not resume the device unless needed. If that happens, the runtime PM resume callback pvr_power_device_resume() is not called, the GPU clocks are not re-enabled, and the kernel crashes on the next attempt to access GPU registers as part of the power-on sequence. Replace calls to pm_runtime_force_suspend() and pm_runtime_force_resume() with direct calls to the driver's runtime PM callbacks, pvr_power_device_suspend() and pvr_power_device_resume(), to ensure clocks are re-enabled and avoid the kernel crash.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/9f852d301f642223c…
https://git.kernel.org/stable/c/e066cc6e0f094ca21…
https://git.kernel.org/stable/c/d38376b3ee48d073c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: cc1aeedb98ad347c06ff59e991b2f94dfb4c565d , < 9f852d301f642223c4798f3c13ba15e91165d078 (git) Affected: cc1aeedb98ad347c06ff59e991b2f94dfb4c565d , < e066cc6e0f094ca2120f1928d126d56f686cd73e (git) Affected: cc1aeedb98ad347c06ff59e991b2f94dfb4c565d , < d38376b3ee48d073c64e75e150510d7e6b4b04f7 (git)
Linux	Linux	Affected: 6.8 Unaffected: 0 , < 6.8 (semver) Unaffected: 6.12.39 , ≤ 6.12.* (semver) Unaffected: 6.15.7 , ≤ 6.15.* (semver) Unaffected: 6.16 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/imagination/pvr_power.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9f852d301f642223c4798f3c13ba15e91165d078",
              "status": "affected",
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              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "cc1aeedb98ad347c06ff59e991b2f94dfb4c565d",
              "versionType": "git"
            },
            {
              "lessThan": "d38376b3ee48d073c64e75e150510d7e6b4b04f7",
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              "versionType": "git"
            }
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
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              "lessThan": "6.8",
              "status": "unaffected",
              "version": "0",
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            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.39",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
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            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
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                },
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                }
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/imagination: Fix kernel crash when hard resetting the GPU\n\nThe GPU hard reset sequence calls pm_runtime_force_suspend() and\npm_runtime_force_resume(), which according to their documentation should\nonly be used during system-wide PM transitions to sleep states.\n\nThe main issue though is that depending on some internal runtime PM\nstate as seen by pm_runtime_force_suspend() (whether the usage count is\n\u003c= 1), pm_runtime_force_resume() might not resume the device unless\nneeded. If that happens, the runtime PM resume callback\npvr_power_device_resume() is not called, the GPU clocks are not\nre-enabled, and the kernel crashes on the next attempt to access GPU\nregisters as part of the power-on sequence.\n\nReplace calls to pm_runtime_force_suspend() and\npm_runtime_force_resume() with direct calls to the driver\u0027s runtime PM\ncallbacks, pvr_power_device_suspend() and pvr_power_device_resume(),\nto ensure clocks are re-enabled and avoid the kernel crash."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:29:37.792Z",
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          "url": "https://git.kernel.org/stable/c/d38376b3ee48d073c64e75e150510d7e6b4b04f7"
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      "title": "drm/imagination: Fix kernel crash when hard resetting the GPU",
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    "datePublished": "2025-08-16T10:55:08.373Z",
    "dateReserved": "2025-04-16T04:51:24.023Z",
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    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date	Other

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.

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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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