ghsa-j4wq-v2m2-959h
Vulnerability from github
Published
2025-10-04 18:31
Modified
2025-10-04 18:31
Details

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

drm/i915: mark requests for GuC virtual engines to avoid use-after-free

References to i915_requests may be trapped by userspace inside a sync_file or dmabuf (dma-resv) and held indefinitely across different proceses. To counter-act the memory leaks, we try to not to keep references from the request past their completion. On the other side on fence release we need to know if rq->engine is valid and points to hw engine (true for non-virtual requests). To make it possible extra bit has been added to rq->execution_mask, for marking virtual engines.

(cherry picked from commit 280410677af763f3871b93e794a199cfcf6fb580)

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53552"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-04T16:15:50Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/i915: mark requests for GuC virtual engines to avoid use-after-free\n\nReferences to i915_requests may be trapped by userspace inside a\nsync_file or dmabuf (dma-resv) and held indefinitely across different\nproceses. To counter-act the memory leaks, we try to not to keep\nreferences from the request past their completion.\nOn the other side on fence release we need to know if rq-\u003eengine\nis valid and points to hw engine (true for non-virtual requests).\nTo make it possible extra bit has been added to rq-\u003eexecution_mask,\nfor marking virtual engines.\n\n(cherry picked from commit 280410677af763f3871b93e794a199cfcf6fb580)",
  "id": "GHSA-j4wq-v2m2-959h",
  "modified": "2025-10-04T18:31:15Z",
  "published": "2025-10-04T18:31:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53552"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5eefc5307c983b59344a4cb89009819f580c84fa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7fb464d52fa41c31a6fd1ad82888e67c65935d94"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8017a27cec32eac8c8f9430b0a3055840136b856"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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