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CVE-2025-40255 net: core: prevent NULL deref in generic_hwtstamp_ioctl_lower()

🗓️ 04 Dec 2025 16:08:17Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 39 Views

Linux kernel fix prevents NULL dereference in generic_hwtstamp_ioctl_lower when ifr is NULL; returns -EINVAL.

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Rows per page
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/core/dev_ioctl.c"
    ],
    "versions": [
      {
        "version": "6e9e2eed4f39d52edf5fd006409d211facf49f6b",
        "lessThan": "8817f816ae41908e9625c0770c4af0dcdcc01238",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6e9e2eed4f39d52edf5fd006409d211facf49f6b",
        "lessThan": "f796a8dec9beafcc0f6f0d3478ed685a15c5e062",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/core/dev_ioctl.c"
    ],
    "versions": [
      {
        "version": "6.14",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.14",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.17.10",
        "lessThanOrEqual": "6.17.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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