FKIE_CVE-2026-23037

Vulnerability from fkie_nvd - Published: 2026-01-31 12:16 - Updated: 2026-02-06 17:16
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: can: etas_es58x: allow partial RX URB allocation to succeed When es58x_alloc_rx_urbs() fails to allocate the requested number of URBs but succeeds in allocating some, it returns an error code. This causes es58x_open() to return early, skipping the cleanup label 'free_urbs', which leads to the anchored URBs being leaked. As pointed out by maintainer Vincent Mailhol, the driver is designed to handle partial URB allocation gracefully. Therefore, partial allocation should not be treated as a fatal error. Modify es58x_alloc_rx_urbs() to return 0 if at least one URB has been allocated, restoring the intended behavior and preventing the leak in es58x_open().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/611e839d2d552416b498ed5593e10670f61fcd4d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6c5124a60989051799037834f0a1a4b428718157
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/97250eb05e4b6afe787290e8fd97d0675116c61b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aec888f44853584b5a7cd01249806030cf94a73d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b1979778e98569c1e78c2c7f16bb24d76541ab00
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ba45e3d6b02c97dbb4578fbae7027fd66f3caa10
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: etas_es58x: allow partial RX URB allocation to succeed\n\nWhen es58x_alloc_rx_urbs() fails to allocate the requested number of\nURBs but succeeds in allocating some, it returns an error code.\nThis causes es58x_open() to return early, skipping the cleanup label\n\u0027free_urbs\u0027, which leads to the anchored URBs being leaked.\n\nAs pointed out by maintainer Vincent Mailhol, the driver is designed\nto handle partial URB allocation gracefully. Therefore, partial\nallocation should not be treated as a fatal error.\n\nModify es58x_alloc_rx_urbs() to return 0 if at least one URB has been\nallocated, restoring the intended behavior and preventing the leak\nin es58x_open()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncan: etas_es58x: permitir que la asignaci\u00f3n parcial de URB RX tenga \u00e9xito\n\nCuando es58x_alloc_rx_urbs() falla al asignar el n\u00famero solicitado de URBs pero logra asignar algunos, devuelve un c\u00f3digo de error. Esto hace que es58x_open() retorne prematuramente, salt\u00e1ndose la etiqueta de limpieza \u0027free_urbs\u0027, lo que lleva a la fuga de los URBs anclados.\n\nComo se\u00f1al\u00f3 el mantenedor Vincent Mailhol, el controlador est\u00e1 dise\u00f1ado para manejar la asignaci\u00f3n parcial de URB de manera elegante. Por lo tanto, la asignaci\u00f3n parcial no debe ser tratada como un error fatal.\n\nModificar es58x_alloc_rx_urbs() para que devuelva 0 si al menos un URB ha sido asignado, restaurando el comportamiento previsto y previniendo la fuga en es58x_open()."
    }
  ],
  "id": "CVE-2026-23037",
  "lastModified": "2026-02-06T17:16:21.870",
  "metrics": {},
  "published": "2026-01-31T12:16:07.010",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/611e839d2d552416b498ed5593e10670f61fcd4d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6c5124a60989051799037834f0a1a4b428718157"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/97250eb05e4b6afe787290e8fd97d0675116c61b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/aec888f44853584b5a7cd01249806030cf94a73d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b1979778e98569c1e78c2c7f16bb24d76541ab00"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ba45e3d6b02c97dbb4578fbae7027fd66f3caa10"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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