{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-38149",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-38149"
  ],
  "published": "2025-07-03T08:36:23Z",
  "summary": "net: phy: clear phydev->devlink when the link is deleted",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: phy: clear phydev->devlink when the link is deleted\n\nThere is a potential crash issue when disabling and re-enabling the\nnetwork port. When disabling the network port, phy_detach() calls\ndevice_link_del() to remove the device link, but it does not clear\nphydev->devlink, so phydev->devlink is not a NULL pointer. Then the\nnetwork port is re-enabled, but if phy_attach_direct() fails before\ncalling device_link_add(), the code jumps to the \"error\" label and\ncalls phy_detach(). Since phydev->devlink retains the old value from\nthe previous attach/detach cycle, device_link_del() uses the old value,\nwhich accesses a NULL pointer and causes a crash. The simplified crash\nlog is as follows.\n\n[   24.702421] Call trace:\n[   24.704856]  device_link_put_kref+0x20/0x120\n[   24.709124]  device_link_del+0x30/0x48\n[   24.712864]  phy_detach+0x24/0x168\n[   24.716261]  phy_attach_direct+0x168/0x3a4\n[   24.720352]  phylink_fwnode_phy_connect+0xc8/0x14c\n[   24.725140]  phylink_of_phy_connect+0x1c/0x34\n\nTherefore, phydev->devlink needs to be cleared when the device link is\ndeleted.",
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-38149"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/363fdf2777423ad346d781f09548cca14877f729"
    },
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      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ddc654e89ace723b78c34911c65243accbc9b75c"
    },
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      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/034bc4a2a72dea2cfcaf24c6bae03c38ad5a0b87"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0795b05a59b1371b18ffbf09d385296b12e9f5d5"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
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}