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CVE-2023-54022

Estado: AplazadaSin puntuar—

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

ALSA: usb-audio: Fix potential memory leaks at error path for UMP open

The allocation and initialization errors at alloc_midi_urbs() that is called at MIDI 2.0 / UMP device are supposed to be handled at the caller side by invoking free_midi_urbs(). However, free_midi_urbs() loops only for ep->num_urbs entries, and since ep->num_entries wasn't updated yet at the allocation / init error in alloc_midi_urbs(), this entry won't be released.

The intention of free_midi_urbs() is to release the whole elements, so change the loop size to NUM_URBS to scan over all elements for fixing the missed releases.

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Also, the call of free_midi_urbs() is missing at snd_usb_midi_v2_open(). Although it'll be released later at reopen/close or disconnection, it's better to release immediately at the error path.

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)

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{
  "id": "CVE-2023-54022",
  "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": "ff49d1df79aef7580fe3ac99d17c3f886655d080",
              "lessThan": "f819b343aa95d24d5f7d6e06660c7f62591abc5f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ff49d1df79aef7580fe3ac99d17c3f886655d080",
              "lessThan": "b1757fa30ef14f254f4719bf6f7d54a4c8207216",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "sound/usb/midi2.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.5"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.5",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.5.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.5.*"
            },
            {
              "status": "unaffected",
              "version": "6.6",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "sound/usb/midi2.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-24T11:15:55.210",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/b1757fa30ef14f254f4719bf6f7d54a4c8207216",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f819b343aa95d24d5f7d6e06660c7f62591abc5f",
      "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 potential memory leaks at error path for UMP open\n\nThe allocation and initialization errors at alloc_midi_urbs() that is\ncalled at MIDI 2.0 / UMP device are supposed to be handled at the\ncaller side by invoking free_midi_urbs().  However, free_midi_urbs()\nloops only for ep->num_urbs entries, and since ep->num_entries wasn't\nupdated yet at the allocation / init error in alloc_midi_urbs(), this\nentry won't be released.\n\nThe intention of free_midi_urbs() is to release the whole elements, so\nchange the loop size to NUM_URBS to scan over all elements for fixing\nthe missed releases.\n\nAlso, the call of free_midi_urbs() is missing at\nsnd_usb_midi_v2_open().  Although it'll be released later at\nreopen/close or disconnection, it's better to release immediately at\nthe error path."
    }
  ],
  "lastModified": "2026-06-17T06:46:33.313",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}