FKIE_CVE-2023-53378

Vulnerability from fkie_nvd - Published: 2025-09-18 14:15 - Updated: 2025-09-19 16:00
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/i915/dpt: Treat the DPT BO as a framebuffer Currently i915_gem_object_is_framebuffer() doesn't treat the BO containing the framebuffer's DPT as a framebuffer itself. This means eg. that the shrinker can evict the DPT BO while leaving the actual FB BO bound, when the DPT is allocated from regular shmem. That causes an immediate oops during hibernate as we try to rewrite the PTEs inside the already evicted DPT obj. TODO: presumably this might also be the reason for the DPT related display faults under heavy memory pressure, but I'm still not sure how that would happen as the object should be pinned by intel_dpt_pin() while in active use by the display engine... (cherry picked from commit 779cb5ba64ec7df80675a956c9022929514f517a)
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3413881e1ecc3cba722a2e87ec099692eed5be28
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5390a02b4508416b9bee96674f141c68f89bafbc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c781c107731fc09ce4330c8c636b8446d0f72aa4
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/i915/dpt: Treat the DPT BO as a framebuffer\n\nCurrently i915_gem_object_is_framebuffer() doesn\u0027t treat the\nBO containing the framebuffer\u0027s DPT as a framebuffer itself.\nThis means eg. that the shrinker can evict the DPT BO while\nleaving the actual FB BO bound, when the DPT is allocated\nfrom regular shmem.\n\nThat causes an immediate oops during hibernate as we\ntry to rewrite the PTEs inside the already evicted\nDPT obj.\n\nTODO: presumably this might also be the reason for the\nDPT related display faults under heavy memory pressure,\nbut I\u0027m still not sure how that would happen as the object\nshould be pinned by intel_dpt_pin() while in active use by\nthe display engine...\n\n(cherry picked from commit 779cb5ba64ec7df80675a956c9022929514f517a)"
    }
  ],
  "id": "CVE-2023-53378",
  "lastModified": "2025-09-19T16:00:27.847",
  "metrics": {},
  "published": "2025-09-18T14:15:40.710",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3413881e1ecc3cba722a2e87ec099692eed5be28"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5390a02b4508416b9bee96674f141c68f89bafbc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c781c107731fc09ce4330c8c636b8446d0f72aa4"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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