CVE-2025-68747 (GCVE-0-2025-68747)

Vulnerability from cvelistv5 – Published: 2025-12-24 12:09 – Updated: 2025-12-24 12:09
VLAI?
Title
drm/panthor: Fix UAF on kernel BO VA nodes
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Fix UAF on kernel BO VA nodes If the MMU is down, panthor_vm_unmap_range() might return an error. We expect the page table to be updated still, and if the MMU is blocked, the rest of the GPU should be blocked too, so no risk of accessing physical memory returned to the system (which the current code doesn't cover for anyway). Proceed with the rest of the cleanup instead of bailing out and leaving the va_node inserted in the drm_mm, which leads to UAF when other adjacent nodes are removed from the drm_mm tree.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8a1cc07578bf42d85f008316873d710ff684dd29 , < 5a0060ddfc1fcfdb0f7b4fa1b7b3b0c436151391 (git)
Affected: 8a1cc07578bf42d85f008316873d710ff684dd29 , < 1123eadb843588b361c96f53a771202b7953154f (git)
Affected: 8a1cc07578bf42d85f008316873d710ff684dd29 , < 0612704b6f6ddf2ae223019c52148c5ac76cf70e (git)
Affected: 8a1cc07578bf42d85f008316873d710ff684dd29 , < 98dd5143447af0ee33551776d8b2560c35d0bc4a (git)
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    Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.12.63 , ≤ 6.12.* (semver)
Unaffected: 6.17.13 , ≤ 6.17.* (semver)
Unaffected: 6.18.2 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc1 , ≤ * (original_commit_for_fix)
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{
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            "drivers/gpu/drm/panthor/panthor_gem.c"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: Fix UAF on kernel BO VA nodes\n\nIf the MMU is down, panthor_vm_unmap_range() might return an error.\nWe expect the page table to be updated still, and if the MMU is blocked,\nthe rest of the GPU should be blocked too, so no risk of accessing\nphysical memory returned to the system (which the current code doesn\u0027t\ncover for anyway).\n\nProceed with the rest of the cleanup instead of bailing out and leaving\nthe va_node inserted in the drm_mm, which leads to UAF when other\nadjacent nodes are removed from the drm_mm tree."
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      "providerMetadata": {
        "dateUpdated": "2025-12-24T12:09:42.925Z",
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      "title": "drm/panthor: Fix UAF on kernel BO VA nodes",
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    "dateReserved": "2025-12-24T10:30:51.031Z",
    "dateUpdated": "2025-12-24T12:09:42.925Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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  }
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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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