CVE-2026-46311 (GCVE-0-2026-46311)

Vulnerability from cvelistv5 – Published: 2026-06-08 15:50 – Updated: 2026-06-09 07:37
VLAI
Title
drm/amdgpu/userq: fix access to stale wptr mapping
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/userq: fix access to stale wptr mapping Use drm_exec to take both locks i.e vm root bo and wptr_obj bo to access the mapping data properly. This fixes the security issue of unmap the wptr_obj while a queue creation is in progress and passing other bo at same address. (cherry picked from commit 1fc6c8ab45dbee096469c08c13f6099d57a52d6c)
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5fb2f7fc21a3668e5794cc0d153641b9719713e1 , < 336a9186f3a4b65bbd865d93936605ac8a1a3991 (git)
Affected: 5fb2f7fc21a3668e5794cc0d153641b9719713e1 , < 6da7b1242da4455b11c24ce667d1cab1a348c8ea (git)
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Linux Linux Affected: 6.16
Unaffected: 0 , < 6.16 (semver)
Unaffected: 7.0.9 , ≤ 7.0.* (semver)
Unaffected: 7.1-rc3 , ≤ * (original_commit_for_fix)
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{
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        {
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          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/mes_userqueue.c"
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                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/userq: fix access to stale wptr mapping\n\nUse drm_exec to take both locks i.e vm root bo and\nwptr_obj bo to access the mapping data properly.\n\nThis fixes the security issue of unmap the wptr_obj while\na queue creation is in progress and passing other\nbo at same address.\n\n(cherry picked from commit 1fc6c8ab45dbee096469c08c13f6099d57a52d6c)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-09T07:37:29.573Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/6da7b1242da4455b11c24ce667d1cab1a348c8ea"
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      "title": "drm/amdgpu/userq: fix access to stale wptr mapping",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46311",
    "datePublished": "2026-06-08T15:50:41.866Z",
    "dateReserved": "2026-05-13T15:03:33.111Z",
    "dateUpdated": "2026-06-09T07:37:29.573Z",
    "state": "PUBLISHED"
  },
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.