CVE-2025-38467 (GCVE-0-2025-38467)
Vulnerability from cvelistv5
Published
2025-07-25 15:27
Modified
2025-07-28 04:23
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/exynos: exynos7_drm_decon: add vblank check in IRQ handling If there's support for another console device (such as a TTY serial), the kernel occasionally panics during boot. The panic message and a relevant snippet of the call stack is as follows: Unable to handle kernel NULL pointer dereference at virtual address 000000000000000 Call trace: drm_crtc_handle_vblank+0x10/0x30 (P) decon_irq_handler+0x88/0xb4 [...] Otherwise, the panics don't happen. This indicates that it's some sort of race condition. Add a check to validate if the drm device can handle vblanks before calling drm_crtc_handle_vblank() to avoid this.
References
Impacted products
Vendor Product Version
Linux Linux Version: 96976c3d9aff4e1387c30f6356ac01fa6f72ef46
Version: 96976c3d9aff4e1387c30f6356ac01fa6f72ef46
Version: 96976c3d9aff4e1387c30f6356ac01fa6f72ef46
Version: 96976c3d9aff4e1387c30f6356ac01fa6f72ef46
Version: 96976c3d9aff4e1387c30f6356ac01fa6f72ef46
Version: 96976c3d9aff4e1387c30f6356ac01fa6f72ef46
Version: 96976c3d9aff4e1387c30f6356ac01fa6f72ef46
Version: 96976c3d9aff4e1387c30f6356ac01fa6f72ef46
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{
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          "programFiles": [
            "drivers/gpu/drm/exynos/exynos7_drm_decon.c"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/exynos: exynos7_drm_decon: add vblank check in IRQ handling\n\nIf there\u0027s support for another console device (such as a TTY serial),\nthe kernel occasionally panics during boot. The panic message and a\nrelevant snippet of the call stack is as follows:\n\n  Unable to handle kernel NULL pointer dereference at virtual address 000000000000000\n  Call trace:\n    drm_crtc_handle_vblank+0x10/0x30 (P)\n    decon_irq_handler+0x88/0xb4\n    [...]\n\nOtherwise, the panics don\u0027t happen. This indicates that it\u0027s some sort\nof race condition.\n\nAdd a check to validate if the drm device can handle vblanks before\ncalling drm_crtc_handle_vblank() to avoid this."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:23:16.975Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38467",
    "datePublished": "2025-07-25T15:27:49.045Z",
    "dateReserved": "2025-04-16T04:51:24.020Z",
    "dateUpdated": "2025-07-28T04:23:16.975Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38467\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-25T16:15:33.267\",\"lastModified\":\"2025-07-29T14:14:55.157\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/exynos: exynos7_drm_decon: add vblank check in IRQ handling\\n\\nIf there\u0027s support for another console device (such as a TTY serial),\\nthe kernel occasionally panics during boot. The panic message and a\\nrelevant snippet of the call stack is as follows:\\n\\n  Unable to handle kernel NULL pointer dereference at virtual address 000000000000000\\n  Call trace:\\n    drm_crtc_handle_vblank+0x10/0x30 (P)\\n    decon_irq_handler+0x88/0xb4\\n    [...]\\n\\nOtherwise, the panics don\u0027t happen. This indicates that it\u0027s some sort\\nof race condition.\\n\\nAdd a check to validate if the drm device can handle vblanks before\\ncalling drm_crtc_handle_vblank() to avoid this.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/exynos: exynos7_drm_decon: a\u00f1adir comprobaci\u00f3n de vblank en el manejo de IRQ Si hay soporte para otro dispositivo de consola (como un serial TTY), el kernel ocasionalmente entra en p\u00e1nico durante el arranque. El mensaje de p\u00e1nico y un fragmento relevante de la pila de llamadas es el siguiente: Unable to handle kernel NULL pointer dereference at virtual address 000000000000000 Rastreo de llamada: drm_crtc_handle_vblank+0x10/0x30 (P) decon_irq_handler+0x88/0xb4 [...] De lo contrario, los p\u00e1nicos no ocurren. Esto indica que es alg\u00fan tipo de condici\u00f3n de ejecuci\u00f3n. Agregue una comprobaci\u00f3n para validar si el dispositivo drm puede manejar vblanks antes de llamar a drm_crtc_handle_vblank() para evitar esto.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/391e5ea5b877230b844c9bd8bbcd91b681b1ce2d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/87825fbd1e176cd5b896940f3959e7c9a916945d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/996740652e620ef8ee1e5c65832cf2ffa498577d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a2130463fc9451005660b0eda7b61d5f746f7d74\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a40a35166f7e4f6dcd4b087d620c8228922dcb0a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b4e72c0bf878f02faa00a7dc7c9ffc4ff7c116a7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b846350aa272de99bf6fecfa6b08e64ebfb13173\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e9d9b25f376737b81f06de9c5aa422b488f47184\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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