{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-26874",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/mediatek: Fix a null pointer crash in mtk_drm_crtc_finish_page_flip\n\nIt's possible that mtk_crtc->event is NULL in\nmtk_drm_crtc_finish_page_flip().\n\npending_needs_vblank value is set by mtk_crtc->event, but in\nmtk_drm_crtc_atomic_flush(), it's is not guarded by the same\nlock in mtk_drm_finish_page_flip(), thus a race condition happens.\n\nConsider the following case:\n\nCPU1                              CPU2\nstep 1:\nmtk_drm_crtc_atomic_begin()\nmtk_crtc->event is not null,\n                                  step 1:\n                                  mtk_drm_crtc_atomic_flush:\n                                  mtk_drm_crtc_update_config(\n                                      !!mtk_crtc->event)\nstep 2:\nmtk_crtc_ddp_irq ->\nmtk_drm_finish_page_flip:\nlock\nmtk_crtc->event set to null,\npending_needs_vblank set to false\nunlock\n                                  pending_needs_vblank set to true,\n\n                                  step 2:\n                                  mtk_crtc_ddp_irq ->\n                                  mtk_drm_finish_page_flip called again,\n                                  pending_needs_vblank is still true\n                                  //null pointer\n\nInstead of guarding the entire mtk_drm_crtc_atomic_flush(), it's more\nefficient to just check if mtk_crtc->event is null before use."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "119f5173628a",
                                            "version_value": "accdac6b71d5"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "4.7",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "4.7",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "4.19.311",
                                                        "lessThanOrEqual": "4.19.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.4.273",
                                                        "lessThanOrEqual": "5.4.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.10.214",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.15.153",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.1.83",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.6.23",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.7.11",
                                                        "lessThanOrEqual": "6.7.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.8.2",
                                                        "lessThanOrEqual": "6.8.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.9",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
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                                    ]
                                }
                            }
                        ]
                    }
                }
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        }
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    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/accdac6b71d5a2b84040c3d2234f53a60edc398e",
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                "name": "https://git.kernel.org/stable/c/dfde84cc6c589f2a9f820f12426d97365670b731"
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                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/4688be96d20ffa49d2186523ee84f475f316fd49"
            },
            {
                "url": "https://git.kernel.org/stable/c/9beec711a17245b853d64488fd5b739031612340",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/9beec711a17245b853d64488fd5b739031612340"
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                "name": "https://git.kernel.org/stable/c/d2bd30c710475b2e29288827d2c91f9e6e2b91d7"
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                "url": "https://git.kernel.org/stable/c/a3dd12b64ae8373a41a216a0b621df224210860a",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/a3dd12b64ae8373a41a216a0b621df224210860a"
            },
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                "url": "https://git.kernel.org/stable/c/9acee29a38b4d4b70f1f583e5ef9a245db4db710",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/9acee29a38b4d4b70f1f583e5ef9a245db4db710"
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                "url": "https://git.kernel.org/stable/c/3fc88b246a2fc16014e374040fc15af1d3752535",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/3fc88b246a2fc16014e374040fc15af1d3752535"
            },
            {
                "url": "https://git.kernel.org/stable/c/c958e86e9cc1b48cac004a6e245154dfba8e163b",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/c958e86e9cc1b48cac004a6e245154dfba8e163b"
            },
            {
                "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html",
                "refsource": "MISC",
                "name": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
            },
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                "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html",
                "refsource": "MISC",
                "name": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
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