drm/xe: Fix missing runtime PM reference in ccs_mode_store

{
  "id": "b5486e5354a1db71bc44b428da839b73e91ffb84e1e56f390060ca1195017fcb",
  "url": "https://osv.dev/vulnerability/CVE-2026-31547",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/xe: Fix missing runtime PM reference in ccs_mode_store",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/xe: Fix missing runtime PM reference in ccs_mode_store ccs_mode_store() calls xe_gt_reset() which internally invokes xe_pm_runtime_get_noresume(). That function requires the caller to already hold an outer runtime PM reference and warns if none is held: [46.891177] xe 0000:03:00.0: [drm] Missing outer runtime PM protection [46.891178] WARNING: drivers/gpu/drm/xe/xe_pm.c:885 at xe_pm_runtime_get_noresume+0x8b/0xc0 Fix this by protecting xe_gt_reset() with the scope-based guard(xe_pm_runtime)(xe), which is the preferred form when the reference lifetime matches a single scope. v2: - Use scope-based guard(xe_pm_runtime)(xe) (Shuicheng) - Update commit message accordingly (cherry picked from commit 7937ea733f79b3f25e802a0c8360bf7423856f36)",
    "evidence": "osv:CVE-2026-31547",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.19.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-31547",
      "aliases": [
        "CVE-2026-31547"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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                {
                  "fixed": "65d046b2d8e0d6d855379a981869005fd6b6a41b"
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          "database_specific": {
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        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.19.0"
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                  "fixed": "6.19.10"
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31547.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:50.068548288Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/65d046b2d8e0d6d855379a981869005fd6b6a41b",
        "https://git.kernel.org/stable/c/c409ecce9adcf815e86bc2f68834982e5a9c4e76",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31547.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-31547",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31547.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-31547",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 518195,
  "published_at": "2026-04-24T14:33:15.262+00:00"
}