{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-26607",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/bridge: sii902x: Fix probing race issue\n\nA null pointer dereference crash has been observed rarely on TI\nplatforms using sii9022 bridge:\n\n[   53.271356]  sii902x_get_edid+0x34/0x70 [sii902x]\n[   53.276066]  sii902x_bridge_get_edid+0x14/0x20 [sii902x]\n[   53.281381]  drm_bridge_get_edid+0x20/0x34 [drm]\n[   53.286305]  drm_bridge_connector_get_modes+0x8c/0xcc [drm_kms_helper]\n[   53.292955]  drm_helper_probe_single_connector_modes+0x190/0x538 [drm_kms_helper]\n[   53.300510]  drm_client_modeset_probe+0x1f0/0xbd4 [drm]\n[   53.305958]  __drm_fb_helper_initial_config_and_unlock+0x50/0x510 [drm_kms_helper]\n[   53.313611]  drm_fb_helper_initial_config+0x48/0x58 [drm_kms_helper]\n[   53.320039]  drm_fbdev_dma_client_hotplug+0x84/0xd4 [drm_dma_helper]\n[   53.326401]  drm_client_register+0x5c/0xa0 [drm]\n[   53.331216]  drm_fbdev_dma_setup+0xc8/0x13c [drm_dma_helper]\n[   53.336881]  tidss_probe+0x128/0x264 [tidss]\n[   53.341174]  platform_probe+0x68/0xc4\n[   53.344841]  really_probe+0x188/0x3c4\n[   53.348501]  __driver_probe_device+0x7c/0x16c\n[   53.352854]  driver_probe_device+0x3c/0x10c\n[   53.357033]  __device_attach_driver+0xbc/0x158\n[   53.361472]  bus_for_each_drv+0x88/0xe8\n[   53.365303]  __device_attach+0xa0/0x1b4\n[   53.369135]  device_initial_probe+0x14/0x20\n[   53.373314]  bus_probe_device+0xb0/0xb4\n[   53.377145]  deferred_probe_work_func+0xcc/0x124\n[   53.381757]  process_one_work+0x1f0/0x518\n[   53.385770]  worker_thread+0x1e8/0x3dc\n[   53.389519]  kthread+0x11c/0x120\n[   53.392750]  ret_from_fork+0x10/0x20\n\nThe issue here is as follows:\n\n- tidss probes, but is deferred as sii902x is still missing.\n- sii902x starts probing and enters sii902x_init().\n- sii902x calls drm_bridge_add(). Now the sii902x bridge is ready from\n  DRM's perspective.\n- sii902x calls sii902x_audio_codec_init() and\n  platform_device_register_data()\n- The registration of the audio platform device causes probing of the\n  deferred devices.\n- tidss probes, which eventually causes sii902x_bridge_get_edid() to be\n  called.\n- sii902x_bridge_get_edid() tries to use the i2c to read the edid.\n  However, the sii902x driver has not set up the i2c part yet, leading\n  to the crash.\n\nFix this by moving the drm_bridge_add() to the end of the\nsii902x_init(), which is also at the very end of sii902x_probe()."
            }
        ]
    },
    "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": "21d808405fe4",
                                            "version_value": "e0f83c234ea7"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.0",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "5.0",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.1.76",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.6.15",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.7.3",
                                                        "lessThanOrEqual": "6.7.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.8",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
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    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/e0f83c234ea7a3dec1f84e5d02caa1c51664a076",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/e0f83c234ea7a3dec1f84e5d02caa1c51664a076"
            },
            {
                "url": "https://git.kernel.org/stable/c/56f96cf6eb11a1c2d594367c3becbfb06a855ec1",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/56f96cf6eb11a1c2d594367c3becbfb06a855ec1"
            },
            {
                "url": "https://git.kernel.org/stable/c/2a4c6af7934a7b4c304542c38fee35e09cc1770c",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/2a4c6af7934a7b4c304542c38fee35e09cc1770c"
            },
            {
                "url": "https://git.kernel.org/stable/c/08ac6f132dd77e40f786d8af51140c96c6d739c9",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/08ac6f132dd77e40f786d8af51140c96c6d739c9"
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