CVE-2026-64021 (GCVE-0-2026-64021)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:39 – Updated: 2026-07-19 15:39
VLAI
Title
drm/xe/oa: Fix exec_queue leak on width check in stream open
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/xe/oa: Fix exec_queue leak on width check in stream open In xe_oa_stream_open_ioctl(), when param.exec_q->width > 1 the function returns -EOPNOTSUPP directly, skipping the existing err_exec_q cleanup path. The exec_queue reference obtained by xe_exec_queue_lookup() is leaked. The exec queue holds a reference on the xe_file, which is only dropped during queue teardown. The leaked lookup ref is not on the file's exec_queue xarray, so file close cannot release it. This keeps both the exec queue and the file private state pinned indefinitely. Jump to err_exec_q instead of returning directly so the reference is released. (cherry picked from commit 339fa0be9e4a5d69fa47e91f4a36574224fb478f)
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f0ed39830e6064d62f9c5393505677a26569bb56 , < 04ef7592eaadd9ca8f8f66e76452f73525cff819 (git)
Affected: f0ed39830e6064d62f9c5393505677a26569bb56 , < 4b0c4f0c1b133d4bfa31c167200bcda646873328 (git)
Affected: f0ed39830e6064d62f9c5393505677a26569bb56 , < 4d25342543c01310fc4e0cba7cb17c775e2421e2 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.13
Unaffected: 0 , < 6.13 (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (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_oa.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "04ef7592eaadd9ca8f8f66e76452f73525cff819",
              "status": "affected",
              "version": "f0ed39830e6064d62f9c5393505677a26569bb56",
              "versionType": "git"
            },
            {
              "lessThan": "4b0c4f0c1b133d4bfa31c167200bcda646873328",
              "status": "affected",
              "version": "f0ed39830e6064d62f9c5393505677a26569bb56",
              "versionType": "git"
            },
            {
              "lessThan": "4d25342543c01310fc4e0cba7cb17c775e2421e2",
              "status": "affected",
              "version": "f0ed39830e6064d62f9c5393505677a26569bb56",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_oa.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.34",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.11",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/oa: Fix exec_queue leak on width check in stream open\n\nIn xe_oa_stream_open_ioctl(), when param.exec_q-\u003ewidth \u003e 1 the\nfunction returns -EOPNOTSUPP directly, skipping the existing\nerr_exec_q cleanup path. The exec_queue reference obtained by\nxe_exec_queue_lookup() is leaked.\n\nThe exec queue holds a reference on the xe_file, which is only\ndropped during queue teardown. The leaked lookup ref is not on\nthe file\u0027s exec_queue xarray, so file close cannot release it.\nThis keeps both the exec queue and the file private state pinned\nindefinitely.\n\nJump to err_exec_q instead of returning directly so the reference\nis released.\n\n(cherry picked from commit 339fa0be9e4a5d69fa47e91f4a36574224fb478f)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T15:39:14.741Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/04ef7592eaadd9ca8f8f66e76452f73525cff819"
        },
        {
          "url": "https://git.kernel.org/stable/c/4b0c4f0c1b133d4bfa31c167200bcda646873328"
        },
        {
          "url": "https://git.kernel.org/stable/c/4d25342543c01310fc4e0cba7cb17c775e2421e2"
        }
      ],
      "title": "drm/xe/oa: Fix exec_queue leak on width check in stream open",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64021",
    "datePublished": "2026-07-19T15:39:14.741Z",
    "dateReserved": "2026-07-19T07:54:57.027Z",
    "dateUpdated": "2026-07-19T15:39:14.741Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-64021",
      "date": "2026-09-21",
      "epss": "0.00166",
      "percentile": "0.06276"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/gpu/drm/xe/xe_oa.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "04ef7592eaadd9ca8f8f66e76452f73525cff819",
                    "status": "affected",
                    "version": "f0ed39830e6064d62f9c5393505677a26569bb56",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "4b0c4f0c1b133d4bfa31c167200bcda646873328",
                    "status": "affected",
                    "version": "f0ed39830e6064d62f9c5393505677a26569bb56",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "4d25342543c01310fc4e0cba7cb17c775e2421e2",
                    "status": "affected",
                    "version": "f0ed39830e6064d62f9c5393505677a26569bb56",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/gpu/drm/xe/xe_oa.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.13"
                  },
                  {
                    "lessThan": "6.13",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.34",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.0.*",
                    "status": "unaffected",
                    "version": "7.0.11",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.1",
                    "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/oa: Fix exec_queue leak on width check in stream open\n\nIn xe_oa_stream_open_ioctl(), when param.exec_q-\u003ewidth \u003e 1 the\nfunction returns -EOPNOTSUPP directly, skipping the existing\nerr_exec_q cleanup path. The exec_queue reference obtained by\nxe_exec_queue_lookup() is leaked.\n\nThe exec queue holds a reference on the xe_file, which is only\ndropped during queue teardown. The leaked lookup ref is not on\nthe file\u0027s exec_queue xarray, so file close cannot release it.\nThis keeps both the exec queue and the file private state pinned\nindefinitely.\n\nJump to err_exec_q instead of returning directly so the reference\nis released.\n\n(cherry picked from commit 339fa0be9e4a5d69fa47e91f4a36574224fb478f)"
          }
        ],
        "id": "CVE-2026-64021",
        "lastModified": "2026-07-30T14:59:47.950",
        "metrics": {},
        "published": "2026-07-19T16:17:42.107",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/04ef7592eaadd9ca8f8f66e76452f73525cff819"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/4b0c4f0c1b133d4bfa31c167200bcda646873328"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/4d25342543c01310fc4e0cba7cb17c775e2421e2"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Awaiting Analysis"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-22T00:48:02+00:00",
      "cve": "CVE-2026-64021",
      "id": "CVE-2026-64021",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/xe/oa: Fix exec_queue leak on width check in stream open",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64021.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-18T00:44:39Z",
      "cve": "CVE-2026-64021",
      "id": "CVE-2026-64021",
      "initial_release_date": "2026-07-21T13:01:22Z",
      "product_status:first_fixed": "2",
      "product_status:known_not_affected": "358",
      "product_status:recommended": "228",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64021",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64021.json",
      "version": "8"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.