{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-63885",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T07:54:57.018Z",
        "datePublished": "2026-07-19T14:54:58.590Z",
        "dateUpdated": "2026-08-05T12:36:54.290Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T12:36:54.290Z"
            },
            "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's IDR entry still references it.\n\nNULL the old handle's 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": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                        "baseScore": 8.8,
                        "baseSeverity": "HIGH"
                    },
                    "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' 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's 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's 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."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/drm_gem.c"
                    ],
                    "versions": [
                        {
                            "version": "672464dd53231509c9c771110798c56d4660e19e",
                            "lessThan": "0dfa42cfe4dbe114533480503934f43e33c1e83d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "61bd96d3e5472c253f9c1ab77608f0c8aaa9d025",
                            "lessThan": "cde2c9257cbe8463b9dcf7b1075177b72b5fd938",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5e28b7b94408897e41c63477aabc9e1db439bc8c",
                            "lessThan": "7164d78559b0ff29931a366a840a9e5dd53d4b7c",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/drm_gem.c"
                    ],
                    "versions": [
                        {
                            "version": "6.18.32",
                            "lessThan": "6.18.35",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.9",
                            "lessThan": "7.0.12",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18.32",
                                    "versionEndExcluding": "6.18.35"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "7.0.9",
                                    "versionEndExcluding": "7.0.12"
                                }
                            ]
                        }
                    ]
                }
            ],
            "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"
            }
        }
    }
}