fkie_cve-2025-38736
Vulnerability from fkie_nvd
Published
2025-09-05 18:15
Modified
2025-09-08 16:25
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: usb: asix_devices: Fix PHY address mask in MDIO bus initialization Syzbot reported shift-out-of-bounds exception on MDIO bus initialization. The PHY address should be masked to 5 bits (0-31). Without this mask, invalid PHY addresses could be used, potentially causing issues with MDIO bus operations. Fix this by masking the PHY address with 0x1f (31 decimal) to ensure it stays within the valid range.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/22042ffedd8c2c6db08ccdd6d4273068eddd3c5c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/24ef2f53c07f273bad99173e27ee88d44d135b1c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/523eab02fce458fa6d3c51de5bb055800986953e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/748da80831221ae24b4bc8d7ffb22acd5712a341
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8f141f2a4f2ef8ca865d5921574c3d6535e00a49
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fcb4ce9f729c1d08e53abf9d449340e24c3edee6
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: asix_devices: Fix PHY address mask in MDIO bus initialization\n\nSyzbot reported shift-out-of-bounds exception on MDIO bus initialization.\n\nThe PHY address should be masked to 5 bits (0-31). Without this\nmask, invalid PHY addresses could be used, potentially causing issues\nwith MDIO bus operations.\n\nFix this by masking the PHY address with 0x1f (31 decimal) to ensure\nit stays within the valid range."
    }
  ],
  "id": "CVE-2025-38736",
  "lastModified": "2025-09-08T16:25:38.810",
  "metrics": {},
  "published": "2025-09-05T18:15:42.953",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/22042ffedd8c2c6db08ccdd6d4273068eddd3c5c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/24ef2f53c07f273bad99173e27ee88d44d135b1c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/523eab02fce458fa6d3c51de5bb055800986953e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/748da80831221ae24b4bc8d7ffb22acd5712a341"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8f141f2a4f2ef8ca865d5921574c3d6535e00a49"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fcb4ce9f729c1d08e53abf9d449340e24c3edee6"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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