{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-40148",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T07:20:57.175Z",
        "datePublished": "2025-11-12T10:23:26.841Z",
        "dateUpdated": "2026-05-11T21:43:39.984Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:43:39.984Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Add NULL pointer checks in dc_stream cursor attribute functions\n\nThe function dc_stream_set_cursor_attributes() currently dereferences\nthe `stream` pointer and nested members `stream->ctx->dc->current_state`\nwithout checking for NULL.\n\nAll callers of these functions, such as in\n`dcn30_apply_idle_power_optimizations()` and\n`amdgpu_dm_plane_handle_cursor_update()`, already perform NULL checks\nbefore calling these functions.\n\nFixes below:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_stream.c:336 dc_stream_program_cursor_attributes()\nerror: we previously assumed 'stream' could be null (see line 334)\n\ndrivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_stream.c\n    327 bool dc_stream_program_cursor_attributes(\n    328         struct dc_stream_state *stream,\n    329         const struct dc_cursor_attributes *attributes)\n    330 {\n    331         struct dc  *dc;\n    332         bool reset_idle_optimizations = false;\n    333\n    334         dc = stream ? stream->ctx->dc : NULL;\n                     ^^^^^^\nThe old code assumed stream could be NULL.\n\n    335\n--> 336         if (dc_stream_set_cursor_attributes(stream, attributes)) {\n                                                    ^^^^^^\nThe refactor added an unchecked dereference.\n\ndrivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_stream.c\n   313  bool dc_stream_set_cursor_attributes(\n   314          struct dc_stream_state *stream,\n   315          const struct dc_cursor_attributes *attributes)\n   316  {\n   317          bool result = false;\n   318\n   319          if (dc_stream_check_cursor_attributes(stream, stream->ctx->dc->current_state, attributes)) {\n                                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Here.\nThis function used to check for if stream as NULL and return false at\nthe start. Probably we should add that back."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/amd/display/dc/core/dc_stream.c"
                    ],
                    "versions": [
                        {
                            "version": "4465dd0e41e8223a46a41ce4fcdfc55fabd319d8",
                            "lessThan": "01e793e7d4d402c473f1a61ca5824f086693be65",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4465dd0e41e8223a46a41ce4fcdfc55fabd319d8",
                            "lessThan": "bf4e4b97d0fdc66f04fc19d807e24dd8421b8f11",
                            "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/amd/display/dc/core/dc_stream.c"
                    ],
                    "versions": [
                        {
                            "version": "6.16",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.16",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17.3",
                            "lessThanOrEqual": "6.17.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18",
                            "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": "6.16",
                                    "versionEndExcluding": "6.17.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.16",
                                    "versionEndExcluding": "6.18"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/01e793e7d4d402c473f1a61ca5824f086693be65"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bf4e4b97d0fdc66f04fc19d807e24dd8421b8f11"
                }
            ],
            "title": "drm/amd/display: Add NULL pointer checks in dc_stream cursor attribute functions",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}