{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-99209",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.401Z",
        "datePublished": "2026-10-28T10:36:03.274Z",
        "dateUpdated": "2026-10-28T10:36:03.274Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-28T10:36:03.274Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: skip eviction of a BO with no resource\n\nxe_evict_flags() switches on tbo->resource->mem_type to choose an\neviction placement. An xe BO can reach eviction with no ttm.resource,\ne.g. an imported dma-buf BO whose resource was freed during teardown\nwhile its attachment is still live: the exporter then invalidates it via\nxe_dma_buf_move_notify() -> xe_bo_evict(), and the switch dereferences a\nNULL resource and faults.\n\nA BO with no resource has nothing placed or mapped, so there is nothing\nto evict. Return an empty placement (num_placement = 0), mirroring the\nhandling already used for non-xe scatter-gather BOs just above;\nttm_bo_validate() then takes the pipeline-gutting path and returns 0.\n\nWithout the fix the xe_dma_buf@xe_test_dmabuf_move_notify_no_resource\ndynamic live selftest will fail with below stack.\n\nBUG: kernel NULL pointer dereference, address: 0000000000000010\nRIP: 0010:xe_evict_flags+0xf4/0x140 [xe]\nCall Trace:\n <TASK>\n xe_bo_evict+0x40/0xa0 [xe]\n ? ttm_bo_pipeline_gutting+0x71/0x180 [ttm]\n xe_test_dmabuf_move_notify_no_resource+0x182/0x440 [xe]\n xe_dma_buf_kunit+0x387/0x580 [xe]\n\nv2: Add Fixes tag and failure info in commit text (Matt Brost)\n\n(cherry picked from commit dbcfaac6331f1fcb0c2fe3ad3e9adb1e5d43ec0c)"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/xe/xe_bo.c"
                    ],
                    "versions": [
                        {
                            "version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
                            "lessThan": "6046bb9cb2859e3d9bf939e4d6527f3827e1096f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
                            "lessThan": "b6499d19ade1f1e4a1e6b739abc8c815297c98b8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
                            "lessThan": "448e76cbdc6652ccd3ba337b7a6e1f028859f2ed",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/xe/xe_bo.c"
                    ],
                    "versions": [
                        {
                            "version": "6.8",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.8",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.59",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.13",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.8",
                                    "versionEndExcluding": "6.18.59"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.8",
                                    "versionEndExcluding": "7.2.13"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.8",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/6046bb9cb2859e3d9bf939e4d6527f3827e1096f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b6499d19ade1f1e4a1e6b739abc8c815297c98b8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/448e76cbdc6652ccd3ba337b7a6e1f028859f2ed"
                }
            ],
            "title": "drm/xe: skip eviction of a BO with no resource",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}