cve-2024-26607
Vulnerability from cvelistv5
Published
2024-02-29 11:47
Modified
2024-12-19 08:43
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/bridge: sii902x: Fix probing race issue A null pointer dereference crash has been observed rarely on TI platforms using sii9022 bridge: [ 53.271356] sii902x_get_edid+0x34/0x70 [sii902x] [ 53.276066] sii902x_bridge_get_edid+0x14/0x20 [sii902x] [ 53.281381] drm_bridge_get_edid+0x20/0x34 [drm] [ 53.286305] drm_bridge_connector_get_modes+0x8c/0xcc [drm_kms_helper] [ 53.292955] drm_helper_probe_single_connector_modes+0x190/0x538 [drm_kms_helper] [ 53.300510] drm_client_modeset_probe+0x1f0/0xbd4 [drm] [ 53.305958] __drm_fb_helper_initial_config_and_unlock+0x50/0x510 [drm_kms_helper] [ 53.313611] drm_fb_helper_initial_config+0x48/0x58 [drm_kms_helper] [ 53.320039] drm_fbdev_dma_client_hotplug+0x84/0xd4 [drm_dma_helper] [ 53.326401] drm_client_register+0x5c/0xa0 [drm] [ 53.331216] drm_fbdev_dma_setup+0xc8/0x13c [drm_dma_helper] [ 53.336881] tidss_probe+0x128/0x264 [tidss] [ 53.341174] platform_probe+0x68/0xc4 [ 53.344841] really_probe+0x188/0x3c4 [ 53.348501] __driver_probe_device+0x7c/0x16c [ 53.352854] driver_probe_device+0x3c/0x10c [ 53.357033] __device_attach_driver+0xbc/0x158 [ 53.361472] bus_for_each_drv+0x88/0xe8 [ 53.365303] __device_attach+0xa0/0x1b4 [ 53.369135] device_initial_probe+0x14/0x20 [ 53.373314] bus_probe_device+0xb0/0xb4 [ 53.377145] deferred_probe_work_func+0xcc/0x124 [ 53.381757] process_one_work+0x1f0/0x518 [ 53.385770] worker_thread+0x1e8/0x3dc [ 53.389519] kthread+0x11c/0x120 [ 53.392750] ret_from_fork+0x10/0x20 The issue here is as follows: - tidss probes, but is deferred as sii902x is still missing. - sii902x starts probing and enters sii902x_init(). - sii902x calls drm_bridge_add(). Now the sii902x bridge is ready from DRM's perspective. - sii902x calls sii902x_audio_codec_init() and platform_device_register_data() - The registration of the audio platform device causes probing of the deferred devices. - tidss probes, which eventually causes sii902x_bridge_get_edid() to be called. - sii902x_bridge_get_edid() tries to use the i2c to read the edid. However, the sii902x driver has not set up the i2c part yet, leading to the crash. Fix this by moving the drm_bridge_add() to the end of the sii902x_init(), which is also at the very end of sii902x_probe().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/08ac6f132dd77e40f786d8af51140c96c6d739c9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2a4c6af7934a7b4c304542c38fee35e09cc1770c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/56f96cf6eb11a1c2d594367c3becbfb06a855ec1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e0f83c234ea7a3dec1f84e5d02caa1c51664a076
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/08ac6f132dd77e40f786d8af51140c96c6d739c9
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2a4c6af7934a7b4c304542c38fee35e09cc1770c
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/56f96cf6eb11a1c2d594367c3becbfb06a855ec1
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e0f83c234ea7a3dec1f84e5d02caa1c51664a076
Impacted products
Vendor Product Version
Linux Linux Version: 5.0
Show details on NVD website

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                "id": "CVE-2024-26607",
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          "programFiles": [
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      "descriptions": [
        {
          "lang": "en",
          "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\u0027s 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()."
        }
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/08ac6f132dd77e40f786d8af51140c96c6d739c9"
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      "title": "drm/bridge: sii902x: Fix probing race issue",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26607",
    "datePublished": "2024-02-29T11:47:26.439Z",
    "dateReserved": "2024-02-19T14:20:24.130Z",
    "dateUpdated": "2024-12-19T08:43:27.264Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26607\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-29T12:15:47.920\",\"lastModified\":\"2024-11-21T09:02:38.983\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"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\u0027s 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().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/bridge: sii902x: soluciona el problema de carrera de sondeo. Rara vez se ha observado un fallo de desreferencia de puntero nulo en plataformas TI que utilizan el puente sii9022: [ 53.271356] sii902x_get_edid+0x34/0x70 [sii902x] [ 53.276066] sii902x_bridge_get_edid+0x14/0x20 [sii902x] [ 53.281381] drm_bridge_get_edid+0x20/0x34 [drm] [ 53.286305] drm_bridge_connector_get_modes+0x8c/0xcc [drm_kms_helper] [ 53 .292955] drm_helper_probe_single_connector_modes+0x190/0x538 [drm_kms_helper] [ 53.300510] drm_client_modeset_probe+0x1f0/ 0xbd4 [drm] [ 53.305958] __drm_fb_helper_initial_config_and_unlock+0x50/0x510 [drm_kms_helper] [ 53.313611] drm_fb_helper_initial_config+0x48/0x58 [drm_kms_helper] [ 53.320039] drm_f bdev_dma_client_hotplug+0x84/0xd4 [drm_dma_helper] [ 53.326401] drm_client_register+0x5c/0xa0 [drm] [ 53.331216 ] drm_fbdev_dma_setup+0xc8/0x13c [drm_dma_helper] [ 53.336881] tidss_probe+0x128/0x264 [tidss] [ 53.341174] platform_probe+0x68/0xc4 [ 53.344841] very_probe+0x188/0x3 c4 [ 53.348501] __driver_probe_device+0x7c/0x16c [ 53.352854] driver_probe_device+0x3c /0x10c [ 53.357033] __device_attach_driver+0xbc/0x158 [ 53.361472] bus_for_each_drv+0x88/0xe8 [ 53.365303] __device_attach+0xa0/0x1b4 [ 53.369135] dispositivo_initial_probe+0x14/0 x20 [ 53.373314] dispositivo_probe_bus+0xb0/0xb4 [ 53.377145] funci\u00f3n_trabajo_probe_diferida+0xcc/0x124 [ 53.381757] Process_one_work+0x1f0/0x518 [ 53.385770] Worker_thread+0x1e8/0x3dc [ 53.389519] kthread+0x11c/0x120 [ 53.392750] ret_from_fork+0x10/0x20 El problema aqu\u00ed es el siguiente: - tids s, pero se pospone ya que sii902x todav\u00eda est\u00e1 desaparecido. - sii902x comienza a sondear e ingresa sii902x_init(). - sii902x llama a drm_bridge_add(). Ahora el puente sii902x est\u00e1 listo desde la perspectiva de DRM. - sii902x llama a sii902x_audio_codec_init() y platform_device_register_data() - El registro del dispositivo de plataforma de audio provoca el sondeo de los dispositivos diferidos. - sondas tidss, que eventualmente provocan que se llame a sii902x_bridge_get_edid(). - sii902x_bridge_get_edid() intenta usar i2c para leer el edit. Sin embargo, el controlador sii902x a\u00fan no ha configurado la parte i2c, lo que provoc\u00f3 el fallo. Solucione este problema moviendo drm_bridge_add() al final de sii902x_init(), que tambi\u00e9n est\u00e1 al final de sii902x_probe().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/08ac6f132dd77e40f786d8af51140c96c6d739c9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2a4c6af7934a7b4c304542c38fee35e09cc1770c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/56f96cf6eb11a1c2d594367c3becbfb06a855ec1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e0f83c234ea7a3dec1f84e5d02caa1c51664a076\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/08ac6f132dd77e40f786d8af51140c96c6d739c9\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/2a4c6af7934a7b4c304542c38fee35e09cc1770c\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/56f96cf6eb11a1c2d594367c3becbfb06a855ec1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/e0f83c234ea7a3dec1f84e5d02caa1c51664a076\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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