CVE-2026-93225 (GCVE-0-2026-93225)

Vulnerability from cvelistv5 – Published: 2026-09-24 15:21 – Updated: 2026-10-19 09:07
VLAI
Title
phy: fsl-imx8mq-usb: fix typec switch leak on probe error path
Summary
In the Linux kernel, the following vulnerability has been resolved: phy: fsl-imx8mq-usb: fix typec switch leak on probe error path If probe fails after imx95_usb_phy_get_tca() succeeds, the typec switch leaks because the only cleanup path was in .remove(), which never runs on probe failure. Use devm_add_action_or_reset() so the switch is cleaned up on both probe failure and driver removal. The imx95_usb_phy_put_tca() is no longer needed, it will be removed in .remove() too.
Severity
7.4 (High)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6638 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: b58f0f86fd6156d7b084257f5c91ceaf7d760927 , < f1b7b2c7ffa9711d1298f52790b377fe02efc1db (git)
Affected: b58f0f86fd6156d7b084257f5c91ceaf7d760927 , < 84646f5b945a370f6999eed59a334387b0abc282 (git)
Affected: b58f0f86fd6156d7b084257f5c91ceaf7d760927 , < 87a1805b1c346b092c34f96f3806f207792910e1 (git)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.18.50 , ≤ 6.18.* (semver)
Unaffected: 7.2.4 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/phy/freescale/phy-fsl-imx8mq-usb.c"
          ],
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          "vendor": "Linux",
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphy: fsl-imx8mq-usb: fix typec switch leak on probe error path\n\nIf probe fails after imx95_usb_phy_get_tca() succeeds, the typec\nswitch leaks because the only cleanup path was in .remove(), which\nnever runs on probe failure.\n\nUse devm_add_action_or_reset() so the switch is cleaned up on both\nprobe failure and driver removal. The imx95_usb_phy_put_tca() is no\nlonger needed, it will be removed in .remove() too."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The leak is created in imx8mq_usb_phy_probe() after tca_blk_get_typec_switch() calls typec_switch_register(); the entry point is platform_probe of DT node usb3_phy@4c1f0040 (compatible fsl,imx95-usb-phy). No USB or network protocol message carries the trigger; this is a probe error-path leak.\nAC:H - After imx95_usb_phy_get_tca() succeeds, the only later failure is ENOMEM from kzalloc/devres_alloc in __devm_of_phy_provider_register(); imx8m_get_phy_tuning_data() cannot fail. That GFP_KERNEL failure is not attacker-controlled, and suppress_bind_attrs=true blocks sysfs rebind of imx8mq-usb-phy.\nPR:N - imx8mq_usb_phy_probe() has no capable() check. PHY_FSL_IMX8MQ_USB defaults y on ARCH_MXC\u0026\u0026ARM64, so of_platform populate binds usb3_phy@4c1f0040 during kernel init on i.MX95 boards that set status=okay. Sysfs bind is not required and is disabled by suppress_bind_attrs.\nUI:N - of_platform probe of usb3_phy and a later tcpci/tcpm_register_port() of ptn5110@50 (imx95-19x19-evk typec_con) run unattended at boot. typec_register_port() calls typec_switch_get() without a mount, open, or USB-C cable plug.\nS:U - The leaked typec_switch_dev, the devres free of imx8mq_usb_phy, and tca_blk_typec_switch_set() run in the host kernel PHY/Type-C stack. This is not a KVM/Xen guest-to-host escape or an IOMMU/DMA bypass.\nC:H - typec_switch_register() stores drvdata=imx_phy; probe failure then frees that imx8mq_usb_phy via devres while the class device remains. tca_blk_typec_switch_set() reads the freed object via typec_switch_get_drvdata() when TCPM\u0027s tcpm_mux_set() calls typec_set_orientation().\nI:H - The same dangling drvdata is used by tca_blk_typec_switch_set() to clk_prepare_enable(imx_phy-\u003eclk) and by tca_blk_orientation_set() to writel() TCA_GCFG/TCA_SYSMODE_CFG through tca-\u003ebase; reclaiming the freed imx8mq_usb_phy/tca_blk slab is a write and control-flow primitive.\nA:H - Once probe fails, fwnode_typec_switch_get() does try_module_get(sw_dev-\u003edev.parent-\u003edriver-\u003eowner) with parent-\u003edriver NULL, or tca_blk_typec_switch_set() dereferences the freed imx_phy; either path oopses the i.MX95 host."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:07:36.752Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/f1b7b2c7ffa9711d1298f52790b377fe02efc1db"
        },
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          "url": "https://git.kernel.org/stable/c/84646f5b945a370f6999eed59a334387b0abc282"
        },
        {
          "url": "https://git.kernel.org/stable/c/87a1805b1c346b092c34f96f3806f207792910e1"
        }
      ],
      "title": "phy: fsl-imx8mq-usb: fix typec switch leak on probe error path",
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        "engine": "bippy-1.2.0"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93225",
    "datePublished": "2026-09-24T15:21:12.635Z",
    "dateReserved": "2026-09-17T16:02:15.094Z",
    "dateUpdated": "2026-10-19T09:07:36.752Z",
    "state": "PUBLISHED"
  },
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphy: fsl-imx8mq-usb: fix typec switch leak on probe error path\n\nIf probe fails after imx95_usb_phy_get_tca() succeeds, the typec\nswitch leaks because the only cleanup path was in .remove(), which\nnever runs on probe failure.\n\nUse devm_add_action_or_reset() so the switch is cleaned up on both\nprobe failure and driver removal. The imx95_usb_phy_put_tca() is no\nlonger needed, it will be removed in .remove() too."
          }
        ],
        "id": "CVE-2026-93225",
        "lastModified": "2026-10-19T10:17:13.503",
        "metrics": {
          "cvssMetricV31": [
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      "current_release_date": "2026-11-06T19:59:23+00:00",
      "cve": "CVE-2026-93225",
      "id": "CVE-2026-93225",
      "initial_release_date": "2026-09-24T00:00:00+00:00",
      "product_status:known_affected": "110",
      "product_status:known_not_affected": "93",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: phy: fsl-imx8mq-usb: fix typec switch leak on probe error path",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93225.json",
      "version": "3"
    }
  }
}



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