CVE-2026-31759 (GCVE-0-2026-31759)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:14 – Updated: 2026-11-06 15:32
VLAI
Title
usb: ulpi: fix double free in ulpi_register_interface() error path
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: ulpi: fix double free in ulpi_register_interface() error path When device_register() fails, ulpi_register() calls put_device() on ulpi->dev. The device release callback ulpi_dev_release() drops the OF node reference and frees ulpi, but the current error path in ulpi_register_interface() then calls kfree(ulpi) again, causing a double free. Let put_device() handle the cleanup through ulpi_dev_release() and avoid freeing ulpi again in ulpi_register_interface().
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 15:24 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6641 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f , < 2f70ba9dae13a190673cc3f9b4aad52179738f60 (git)
Affected: 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f , < ee248e6e941e4f2e634df2bd43e5f1ef810ab6df (git)
Affected: 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f , < 272a9b26c336a295e4e209157fed809706c1b1f7 (git)
Affected: 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f , < aaeae6533d77e6ed4def85baec01e2815ebbef61 (git)
Affected: 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f , < 8763f8317bb389aded32a32b08f6751cfff657d2 (git)
Affected: 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f , < 38c28fe25611099230f0965c925499bfcf46a795 (git)
Affected: 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f , < a6e5461f076c2ef63159f18e5cdbd30b50f0bc15 (git)
Affected: 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f , < 01af542392b5d41fd659d487015a71f627accce3 (git)
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Linux Linux Affected: 4.2
Unaffected: 0 , < 4.2 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.168 , ≤ 6.1.* (semver)
Unaffected: 6.6.134 , ≤ 6.6.* (semver)
Unaffected: 6.12.81 , ≤ 6.12.* (semver)
Unaffected: 6.18.22 , ≤ 6.18.* (semver)
Unaffected: 6.19.12 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: ulpi: fix double free in ulpi_register_interface() error path\n\nWhen device_register() fails, ulpi_register() calls put_device() on\nulpi-\u003edev.\n\nThe device release callback ulpi_dev_release() drops the OF node\nreference and frees ulpi, but the current error path in\nulpi_register_interface() then calls kfree(ulpi) again, causing a\ndouble free.\n\nLet put_device() handle the cleanup through ulpi_dev_release() and\navoid freeing ulpi again in ulpi_register_interface()."
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            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nusb: ulpi: corregir doble liberaci\u00f3n en la ruta de error de ulpi_register_interface()\n\nCuando device_register() falla, ulpi_register() llama a put_device() en ulpi  -\u003e  dev.\n\nLa funci\u00f3n de devoluci\u00f3n de llamada de liberaci\u00f3n de dispositivo ulpi_dev_release() elimina la referencia del nodo OF y libera ulpi, pero la ruta de error actual en ulpi_register_interface() luego llama a kfree(ulpi) de nuevo, causando una doble liberaci\u00f3n.\n\nDejar que put_device() maneje la limpieza a trav\u00e9s de ulpi_dev_release() y evitar liberar ulpi de nuevo en ulpi_register_interface()."
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        "id": "CVE-2026-31759",
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                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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      "current_release_date": "2026-11-07T04:37:47+00:00",
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      "product_status:known_affected": "158",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: usb: ulpi: fix double free in ulpi_register_interface() error path",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31759.json",
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              "shortName": "CISA-ADP"
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        "dateReserved": "2026-03-09T15:48:24.139Z",
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  }
}



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