{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-63885",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-16T15:32:52.253073Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-362",
                "description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-19T20:17:54.350Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/drm_gem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0dfa42cfe4dbe114533480503934f43e33c1e83d",
              "status": "affected",
              "version": "672464dd53231509c9c771110798c56d4660e19e",
              "versionType": "git"
            },
            {
              "lessThan": "cde2c9257cbe8463b9dcf7b1075177b72b5fd938",
              "status": "affected",
              "version": "61bd96d3e5472c253f9c1ab77608f0c8aaa9d025",
              "versionType": "git"
            },
            {
              "lessThan": "7164d78559b0ff29931a366a840a9e5dd53d4b7c",
              "status": "affected",
              "version": "5e28b7b94408897e41c63477aabc9e1db439bc8c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/drm_gem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6.18.35",
              "status": "affected",
              "version": "6.18.32",
              "versionType": "semver"
            },
            {
              "lessThan": "7.0.12",
              "status": "affected",
              "version": "7.0.9",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.35",
                  "versionStartIncluding": "6.18.32",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.12",
                  "versionStartIncluding": "7.0.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/gem: fix race between change_handle and handle_delete\n\ndrm_gem_change_handle_ioctl leaves the old handle live in the IDR\nduring the window between spin_unlock(table_lock) and the final\nspin_lock(table_lock). A concurrent drm_gem_handle_delete on the old\nhandle succeeds in this window, decrements handle_count to 0, and frees\nthe GEM object while the new handle\u0027s IDR entry still references it.\n\nNULL the old handle\u0027s IDR entry before dropping table_lock so that any\nconcurrent GEM_CLOSE on the old handle sees NULL and returns -EINVAL.\nRestore the old entry on the prime-bookkeeping error path."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - Exploitation requires local ioctl calls on /dev/dri/renderD* or /dev/dri/card* through DRM_IOCTL_GEM_CHANGE_HANDLE and DRM_IOCTL_GEM_CLOSE; there is no network-facing path to this code.\nAC:L - The attacker controls both racing threads from the same process (one issuing GEM_CHANGE_HANDLE, one issuing GEM_CLOSE on the old handle) and can repeat until the window is hit; this is a self-induced race, not one dependent on external timing.\nPR:L - Only DRM_RENDER_ALLOW is required, available to unprivileged local users with access to a render node (common on desktops, Android, browsers\u0027 GPU processes, and cloud GPU instances); no CAP_SYS_ADMIN or init-namespace root is needed.\nUI:N - No victim interaction is required beyond the attacker already having render-node access; the race is triggered entirely by the attacker\u0027s own concurrent ioctl calls.\nS:C - Successful exploitation crosses from a sandboxed application security boundary (browser GPU process, Android app sandbox, or container with passed-through GPU device) into kernel memory, enabling privilege escalation beyond the attacker\u0027s original security scope.\nC:H - The bug is a GEM object use-after-free; freed kernel heap objects can be reallocated and dereferenced via subsequent GEM operations, enabling arbitrary kernel memory disclosure.\nI:H - Use-after-free of a drm_gem_object allows heap grooming and corruption of reallocated objects, providing a standard path to arbitrary kernel write and local privilege escalation/code execution.\nA:H - The race can free a GEM object still referenced by ioctl state, causing kernel oops/panic on dereference of freed memory; UAF bugs also carry inherent crash risk even before full exploitation."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:36:54.290Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0dfa42cfe4dbe114533480503934f43e33c1e83d"
        },
        {
          "url": "https://git.kernel.org/stable/c/cde2c9257cbe8463b9dcf7b1075177b72b5fd938"
        },
        {
          "url": "https://git.kernel.org/stable/c/7164d78559b0ff29931a366a840a9e5dd53d4b7c"
        }
      ],
      "title": "drm/gem: fix race between change_handle and handle_delete",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-63885",
    "datePublished": "2026-07-19T14:54:58.590Z",
    "dateReserved": "2026-07-19T07:54:57.018Z",
    "dateUpdated": "2026-10-19T20:17:54.350Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}