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CVE-2026-90126

Estado: RecibidaSin puntuar—

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

rtc: pcf8563: fix clock provider leak on unbind

pcf8563_clkout_register_clk() registers the CLKOUT clock provider with of_clk_add_provider(), but nothing ever unwinds it: there is no of_clk_del_provider() call and the driver has no remove callback. Each of_clk_add_provider() allocates a struct of_clk_provider, takes a reference on the OF node and adds an entry to the global of_clk_providers list, none of which is released when the device is unbound. Every bind/unbind (or module reload) therefore leaks a provider structure and an of_node reference.

Leer descripción completaMostrar menos

The clock itself is already device-managed (devm_clk_register()); only the provider registration was not. Use devm_of_clk_add_hw_provider() so the provider is removed automatically on unbind. Tie it to the parent i2c device, whose OF node carries the #clock-cells and clock-output-names properties (the RTC class device has no OF node of its own).

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-2026-90126",
  "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": "a39a6405d5f949bc651694028a55d74c514ef1f9",
              "lessThan": "2b5622cf4ee218b6f98d31dbf3fbd44b9b6bd675",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a39a6405d5f949bc651694028a55d74c514ef1f9",
              "lessThan": "36cb00c33bd83e7ce31b5a9f1f7c70db0cb7776c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a39a6405d5f949bc651694028a55d74c514ef1f9",
              "lessThan": "30b7c63af50fe1464e7582a37de1ca4bd030ecc1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a39a6405d5f949bc651694028a55d74c514ef1f9",
              "lessThan": "7afb8db47c4f107bce89cfe5115fb31ba7c94665",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a39a6405d5f949bc651694028a55d74c514ef1f9",
              "lessThan": "97edf3fd9a46ea89a167966991c0449cfa07b36f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a39a6405d5f949bc651694028a55d74c514ef1f9",
              "lessThan": "08a59c28c2bdbcd655e99526c86a41dc83834283",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a39a6405d5f949bc651694028a55d74c514ef1f9",
              "lessThan": "6218c0533a72235ec9c5f41b812c63d963bd4a3e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a39a6405d5f949bc651694028a55d74c514ef1f9",
              "lessThan": "9c48a53685040bb0de45a640b34055cbbfc69d4f",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/rtc/rtc-pcf8563.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.4"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.4",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/rtc/rtc-pcf8563.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-17T17:17:04.937",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/08a59c28c2bdbcd655e99526c86a41dc83834283",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2b5622cf4ee218b6f98d31dbf3fbd44b9b6bd675",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/30b7c63af50fe1464e7582a37de1ca4bd030ecc1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/36cb00c33bd83e7ce31b5a9f1f7c70db0cb7776c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6218c0533a72235ec9c5f41b812c63d963bd4a3e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7afb8db47c4f107bce89cfe5115fb31ba7c94665",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/97edf3fd9a46ea89a167966991c0449cfa07b36f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9c48a53685040bb0de45a640b34055cbbfc69d4f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrtc: pcf8563: fix clock provider leak on unbind\n\npcf8563_clkout_register_clk() registers the CLKOUT clock provider with\nof_clk_add_provider(), but nothing ever unwinds it: there is no\nof_clk_del_provider() call and the driver has no remove callback. Each\nof_clk_add_provider() allocates a struct of_clk_provider, takes a\nreference on the OF node and adds an entry to the global of_clk_providers\nlist, none of which is released when the device is unbound. Every\nbind/unbind (or module reload) therefore leaks a provider structure and\nan of_node reference.\n\nThe clock itself is already device-managed (devm_clk_register()); only\nthe provider registration was not. Use devm_of_clk_add_hw_provider() so\nthe provider is removed automatically on unbind. Tie it to the parent\ni2c device, whose OF node carries the #clock-cells and clock-output-names\nproperties (the RTC class device has no OF node of its own)."
    }
  ],
  "lastModified": "2026-09-17T17:17:04.937",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}