« Volver al listado

CVE-2025-40275

Estado: AplazadaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd

In snd_usb_create_streams(), for UAC version 3 devices, the Interface Association Descriptor (IAD) is retrieved via usb_ifnum_to_if(). If this call fails, a fallback routine attempts to obtain the IAD from the next interface and sets a BADD profile. However, snd_usb_mixer_controls_badd() assumes that the IAD retrieved from usb_ifnum_to_if() is always valid, without performing a NULL check. This can lead to a NULL pointer dereference when usb_ifnum_to_if() fails to find the interface descriptor.

Leer descripción completaMostrar menos

This patch adds a NULL pointer check after calling usb_ifnum_to_if() in snd_usb_mixer_controls_badd() to prevent the dereference.

This issue was discovered by syzkaller, which triggered the bug by sending a crafted USB device descriptor.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-40275",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
              "lessThan": "23aea9c74aeea2625aaf4fbcc6beb9d09e30f9e4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
              "lessThan": "c5c08965ab96b16361e69a1e2a0e89dbcb99b5a6",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
              "lessThan": "9f282104627be5fbded3102ff9004f753c55a063",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
              "lessThan": "2762d3ea9c929ca4094541ca517c317ffa94625b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
              "lessThan": "57f607c112966c21240c424b33e2cb71e121dcf0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
              "lessThan": "cbdbfc756f2990942138ed0138da9303b4dbf9ff",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
              "lessThan": "85568535893600024d7d8794f4f8b6428b521e0c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
              "lessThan": "632108ec072ad64c8c83db6e16a7efee29ebfb74",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "sound/usb/mixer.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.18"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.18",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.4.302",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.247",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.197",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.159",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.117",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.59",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.17.9",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "sound/usb/mixer.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-06T22:15:55.300",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/23aea9c74aeea2625aaf4fbcc6beb9d09e30f9e4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2762d3ea9c929ca4094541ca517c317ffa94625b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/57f607c112966c21240c424b33e2cb71e121dcf0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/632108ec072ad64c8c83db6e16a7efee29ebfb74",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/85568535893600024d7d8794f4f8b6428b521e0c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9f282104627be5fbded3102ff9004f753c55a063",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c5c08965ab96b16361e69a1e2a0e89dbcb99b5a6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cbdbfc756f2990942138ed0138da9303b4dbf9ff",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd\n\nIn snd_usb_create_streams(), for UAC version 3 devices, the Interface\nAssociation Descriptor (IAD) is retrieved via usb_ifnum_to_if(). If this\ncall fails, a fallback routine attempts to obtain the IAD from the next\ninterface and sets a BADD profile. However, snd_usb_mixer_controls_badd()\nassumes that the IAD retrieved from usb_ifnum_to_if() is always valid,\nwithout performing a NULL check. This can lead to a NULL pointer\ndereference when usb_ifnum_to_if() fails to find the interface descriptor.\n\nThis patch adds a NULL pointer check after calling usb_ifnum_to_if() in\nsnd_usb_mixer_controls_badd() to prevent the dereference.\n\nThis issue was discovered by syzkaller, which triggered the bug by sending\na crafted USB device descriptor."
    }
  ],
  "lastModified": "2026-06-17T09:21:34.623",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}