CVE-2025-40340 (GCVE-0-2025-40340)

Vulnerability from cvelistv5 – Published: 2025-12-09 04:09 – Updated: 2026-05-11 21:47
VLAI
Title
drm/xe: Fix oops in xe_gem_fault when running core_hotunplug test.
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/xe: Fix oops in xe_gem_fault when running core_hotunplug test. I saw an oops in xe_gem_fault when running the xe-fast-feedback testlist against the realtime kernel without debug options enabled. The panic happens after core_hotunplug unbind-rebind finishes. Presumably what happens is that a process mmaps, unlocks because of the FAULT_FLAG_RETRY_NOWAIT logic, has no process memory left, causing ttm_bo_vm_dummy_page() to return VM_FAULT_NOPAGE, since there was nothing left to populate, and then oopses in "mem_type_is_vram(tbo->resource->mem_type)" because tbo->resource is NULL. It's convoluted, but fits the data and explains the oops after the test exits.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7018 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: dd08ebf6c3525a7ea2186e636df064ea47281987 , < 99428bd6123d5676209dfb1d7a8f176cc830b665 (git)
Affected: dd08ebf6c3525a7ea2186e636df064ea47281987 , < 29a3064f9c5a908aaf0b39cd6ed30374db11840d (git)
Affected: dd08ebf6c3525a7ea2186e636df064ea47281987 , < 1cda3c755bb7770be07d75949bb0f45fb88651f6 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.12.58 , ≤ 6.12.* (semver)
Unaffected: 6.17.8 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_bo.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "99428bd6123d5676209dfb1d7a8f176cc830b665",
              "status": "affected",
              "version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
              "versionType": "git"
            },
            {
              "lessThan": "29a3064f9c5a908aaf0b39cd6ed30374db11840d",
              "status": "affected",
              "version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
              "versionType": "git"
            },
            {
              "lessThan": "1cda3c755bb7770be07d75949bb0f45fb88651f6",
              "status": "affected",
              "version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_bo.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "lessThan": "6.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.58",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.58",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.8",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Fix oops in xe_gem_fault when running core_hotunplug test.\n\nI saw an oops in xe_gem_fault when running the xe-fast-feedback\ntestlist against the realtime kernel without debug options enabled.\n\nThe panic happens after core_hotunplug unbind-rebind finishes.\nPresumably what happens is that a process mmaps, unlocks because\nof the FAULT_FLAG_RETRY_NOWAIT logic, has no process memory left,\ncausing ttm_bo_vm_dummy_page() to return VM_FAULT_NOPAGE, since\nthere was nothing left to populate, and then oopses in\n\"mem_type_is_vram(tbo-\u003eresource-\u003emem_type)\" because tbo-\u003eresource\nis NULL.\n\nIt\u0027s convoluted, but fits the data and explains the oops after\nthe test exits."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:47:28.456Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/99428bd6123d5676209dfb1d7a8f176cc830b665"
        },
        {
          "url": "https://git.kernel.org/stable/c/29a3064f9c5a908aaf0b39cd6ed30374db11840d"
        },
        {
          "url": "https://git.kernel.org/stable/c/1cda3c755bb7770be07d75949bb0f45fb88651f6"
        }
      ],
      "title": "drm/xe: Fix oops in xe_gem_fault when running core_hotunplug test.",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40340",
    "datePublished": "2025-12-09T04:09:57.059Z",
    "dateReserved": "2025-04-16T07:20:57.187Z",
    "dateUpdated": "2026-05-11T21:47:28.456Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-40340",
      "date": "2026-11-01",
      "epss": "0.00219",
      "percentile": "0.12429"
    },
    "microsoft_vex": {
      "current_release_date": "2025-12-10T01:02:33.000Z",
      "cve": "CVE-2025-40340",
      "id": "msrc_CVE-2025-40340",
      "initial_release_date": "2025-12-02T00:00:00.000Z",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "drm/xe: Fix oops in xe_gem_fault when running core_hotunplug test.",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-40340.json",
      "version": "1"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/gpu/drm/xe/xe_bo.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "99428bd6123d5676209dfb1d7a8f176cc830b665",
                    "status": "affected",
                    "version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "29a3064f9c5a908aaf0b39cd6ed30374db11840d",
                    "status": "affected",
                    "version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "1cda3c755bb7770be07d75949bb0f45fb88651f6",
                    "status": "affected",
                    "version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/gpu/drm/xe/xe_bo.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.8"
                  },
                  {
                    "lessThan": "6.8",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.58",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.17.*",
                    "status": "unaffected",
                    "version": "6.17.8",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.18",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Fix oops in xe_gem_fault when running core_hotunplug test.\n\nI saw an oops in xe_gem_fault when running the xe-fast-feedback\ntestlist against the realtime kernel without debug options enabled.\n\nThe panic happens after core_hotunplug unbind-rebind finishes.\nPresumably what happens is that a process mmaps, unlocks because\nof the FAULT_FLAG_RETRY_NOWAIT logic, has no process memory left,\ncausing ttm_bo_vm_dummy_page() to return VM_FAULT_NOPAGE, since\nthere was nothing left to populate, and then oopses in\n\"mem_type_is_vram(tbo-\u003eresource-\u003emem_type)\" because tbo-\u003eresource\nis NULL.\n\nIt\u0027s convoluted, but fits the data and explains the oops after\nthe test exits."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/xe: Correcci\u00f3n de un oops en xe_gem_fault al ejecutar la prueba core_hotunplug.\n\nVi un oops en xe_gem_fault al ejecutar la lista de pruebas xe-fast-feedback contra el kernel en tiempo real sin las opciones de depuraci\u00f3n habilitadas.\n\nEl p\u00e1nico ocurre despu\u00e9s de que finaliza el desvinculado-rev\u00ednculo de core_hotunplug. Presumiblemente lo que sucede es que un proceso mapea memoria (mmaps), desbloquea debido a la l\u00f3gica FAULT_FLAG_RETRY_NOWAIT, no le queda memoria de proceso, haciendo que ttm_bo_vm_dummy_page() devuelva VM_FAULT_NOPAGE, ya que no quedaba nada por poblar, y luego ocurre un oops en \u0027mem_type_is_vram(tbo -\u003e resource -\u003e mem_type)\u0027 porque tbo -\u003e resource es NULL.\n\nEs enrevesado, pero encaja con los datos y explica el oops despu\u00e9s de que la prueba finaliza."
          }
        ],
        "id": "CVE-2025-40340",
        "lastModified": "2026-10-14T22:10:00.210",
        "metrics": {},
        "published": "2025-12-09T16:17:44.267",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/1cda3c755bb7770be07d75949bb0f45fb88651f6"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/29a3064f9c5a908aaf0b39cd6ed30374db11840d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/99428bd6123d5676209dfb1d7a8f176cc830b665"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T02:57:21+00:00",
      "cve": "CVE-2025-40340",
      "id": "CVE-2025-40340",
      "initial_release_date": "2025-12-09T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/xe: Fix oops in xe_gem_fault when running core_hotunplug test",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40340.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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

Author Source Type Date Other

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.