FKIE_CVE-2025-38249

Vulnerability from fkie_nvd - Published: 2025-07-09 11:15 - Updated: 2025-11-03 18:16
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3() In snd_usb_get_audioformat_uac3(), the length value returned from snd_usb_ctl_msg() is used directly for memory allocation without validation. This length is controlled by the USB device. The allocated buffer is cast to a uac3_cluster_header_descriptor and its fields are accessed without verifying that the buffer is large enough. If the device returns a smaller than expected length, this leads to an out-of-bounds read. Add a length check to ensure the buffer is large enough for uac3_cluster_header_descriptor.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0ee87c2814deb5e42921281116ac3abcb326880b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/11e740dc1a2c8590eb7074b5c4ab921bb6224c36
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/24ff7d465c4284529bbfa207757bffb6f44b6403
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2dc1c3edf67abd30c757f8054a5da61927cdda21
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6eb211788e1370af52a245d4d7da35c374c7b401
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/74fcb3852a2f579151ce80b9ed96cd916ba0d5d8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c3fb926abe90d86f5e3055e0035f04d9892a118b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fb4e2a6e8f28a3c0ad382e363aeb9cd822007b8a
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\nALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3()\n\nIn snd_usb_get_audioformat_uac3(), the length value returned from\nsnd_usb_ctl_msg() is used directly for memory allocation without\nvalidation. This length is controlled by the USB device.\n\nThe allocated buffer is cast to a uac3_cluster_header_descriptor\nand its fields are accessed without verifying that the buffer\nis large enough. If the device returns a smaller than expected\nlength, this leads to an out-of-bounds read.\n\nAdd a length check to ensure the buffer is large enough for\nuac3_cluster_header_descriptor."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: usb-audio: Corregir lectura fuera de los l\u00edmites en snd_usb_get_audioformat_uac3() En snd_usb_get_audioformat_uac3(), el valor de longitud devuelto por snd_usb_ctl_msg() se usa directamente para la asignaci\u00f3n de memoria sin validaci\u00f3n. Esta longitud la controla el dispositivo USB. El b\u00fafer asignado se convierte a un uac3_cluster_header_descriptor y se accede a sus campos sin verificar que el b\u00fafer sea lo suficientemente grande. Si el dispositivo devuelve una longitud menor de la esperada, esto conduce a una lectura fuera de los l\u00edmites. A\u00f1ada una comprobaci\u00f3n de longitud para garantizar que el b\u00fafer sea lo suficientemente grande para uac3_cluster_header_descriptor."
    }
  ],
  "id": "CVE-2025-38249",
  "lastModified": "2025-11-03T18:16:10.943",
  "metrics": {},
  "published": "2025-07-09T11:15:27.077",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0ee87c2814deb5e42921281116ac3abcb326880b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/11e740dc1a2c8590eb7074b5c4ab921bb6224c36"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/24ff7d465c4284529bbfa207757bffb6f44b6403"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2dc1c3edf67abd30c757f8054a5da61927cdda21"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6eb211788e1370af52a245d4d7da35c374c7b401"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/74fcb3852a2f579151ce80b9ed96cd916ba0d5d8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c3fb926abe90d86f5e3055e0035f04d9892a118b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fb4e2a6e8f28a3c0ad382e363aeb9cd822007b8a"
    },
    {
      "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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