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CVE-2026-93276

Estado: RecibidaSin puntuar—

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

phy: renesas: phy-rcar-gen3-usb2: Fix devm action registration for disabled VBUS regulator

devm_regulator_get_exclusive() initialises the regulator with enable_count = 1, requiring the consumer to disable it before release.

The devm disable action was previously only registered when the caller explicitly requested enable, so when the regulator was left in its initial enabled state without an explicit enable call, the cleanup path skipped decrementing enable_count, triggering a WARN_ON during regulator release on device removal.

Fix this by always registering the devm disable action based on the actual enabled state via regulator_is_enabled(), regardless of whether the caller requested an explicit enable.

Leer descripción completaMostrar menos

This covers both the explicitly enabled case and the initial state set by devm_regulator_get_exclusive().

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-2026-93276",
  "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": "24843404efe47eab1ee88d7475a0be0f2f6fd9db",
              "lessThan": "bf7fefbc26e292c08cfe7b6496b879109ef1475a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "24843404efe47eab1ee88d7475a0be0f2f6fd9db",
              "lessThan": "935f6e837a83b86b073a7601f699dc2c00e01322",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "24843404efe47eab1ee88d7475a0be0f2f6fd9db",
              "lessThan": "49c9b71b45081e5e5eeb507a2d6edb80d332dc59",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/phy/renesas/phy-rcar-gen3-usb2.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.11",
              "versionType": "semver"
            },
            {
              "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/phy/renesas/phy-rcar-gen3-usb2.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-24T16:17:24.797",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/49c9b71b45081e5e5eeb507a2d6edb80d332dc59",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/935f6e837a83b86b073a7601f699dc2c00e01322",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bf7fefbc26e292c08cfe7b6496b879109ef1475a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphy: renesas: phy-rcar-gen3-usb2: Fix devm action registration for disabled VBUS regulator\n\ndevm_regulator_get_exclusive() initialises the regulator with\nenable_count = 1, requiring the consumer to disable it before release.\n\nThe devm disable action was previously only registered when the caller\nexplicitly requested enable, so when the regulator was left in its initial\nenabled state without an explicit enable call, the cleanup path skipped\ndecrementing enable_count, triggering a WARN_ON during regulator\nrelease on device removal.\n\nFix this by always registering the devm disable action based on the actual\nenabled state via regulator_is_enabled(), regardless of whether the\ncaller requested an explicit enable. This covers both the explicitly\nenabled case and the initial state set by devm_regulator_get_exclusive()."
    }
  ],
  "lastModified": "2026-09-24T16:17:24.797",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}