FKIE_CVE-2025-38467

Vulnerability from fkie_nvd - Published: 2025-07-25 16:15 - Updated: 2025-11-03 18:16
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/391e5ea5b877230b844c9bd8bbcd91b681b1ce2d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/87825fbd1e176cd5b896940f3959e7c9a916945d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/996740652e620ef8ee1e5c65832cf2ffa498577d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a2130463fc9451005660b0eda7b61d5f746f7d74
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a40a35166f7e4f6dcd4b087d620c8228922dcb0a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b4e72c0bf878f02faa00a7dc7c9ffc4ff7c116a7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b846350aa272de99bf6fecfa6b08e64ebfb13173
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e9d9b25f376737b81f06de9c5aa422b488f47184
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Impacted products
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{
  "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."
    }
  ],
  "id": "CVE-2025-38467",
  "lastModified": "2025-11-03T18:16:22.100",
  "metrics": {},
  "published": "2025-07-25T16:15:33.267",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "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": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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