drm/xe/oa: Fix potential UAF in xe_oa_add_config_ioctl()

{
  "id": "583785d2195dbe17addeb866d9915483cf2e60452fe610d638b99f8745ea61a9",
  "url": "https://osv.dev/vulnerability/CVE-2025-71099",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/xe/oa: Fix potential UAF in xe_oa_add_config_ioctl()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/xe/oa: Fix potential UAF in xe_oa_add_config_ioctl() In xe_oa_add_config_ioctl(), we accessed oa_config->id after dropping metrics_lock. Since this lock protects the lifetime of oa_config, an attacker could guess the id and call xe_oa_remove_config_ioctl() with perfect timing, freeing oa_config before we dereference it, leading to a potential use-after-free. Fix this by caching the id in a local variable while holding the lock. v2: (Matt A) - Dropped mutex_unlock(&oa->metrics_lock) ordering change from xe_oa_remove_config_ioctl() (cherry picked from commit 28aeaed130e8e587fd1b73b6d66ca41ccc5a1a31)",
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        },
        "prerequisites": [],
        "fixed_versions": [
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            "value": "6.12.64",
            "evidence": "/affected/1/ranges"
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          {
            "value": "6.18.4",
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    "severity": "high",
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      "id": "CVE-2025-71099",
      "aliases": [
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      "modified": "2026-10-28T02:30:33.000683883Z",
      "provider": "osv",
      "references": [
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        "https://git.kernel.org/stable/c/c6d30b65b7a44dac52ad49513268adbf19eab4a2",
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  "source_id": "core-osv",
  "document_id": 500175,
  "published_at": "2026-01-13T15:34:58.359+00:00"
}