{
  "cveId": "CVE-2025-40255",
  "url": "https://patchblox.com/security/cve/CVE-2025-40255",
  "summary": "CVE-2025-40255 is fixed in 14 products on 1 platform, first by DEBIAN-CVE-2025-40255, released December 4, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  net: core: prevent NULL deref in generic_hwtstam...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  net: core: prevent NULL deref in generic_hwtstamp_ioctl_lower()  The ethtool tsconfig Netlink path can trigger a null pointer dereference. A call chain such as:    tsconfig_prepare_data() -\u003E   dev_get_hwtstamp_phylib() -\u003E   vlan_hwtstamp_get() -\u003E   generic_hwtstamp_get_lower() -\u003E   generic_hwtstamp_ioctl_lower()  results in generic_hwtstamp_ioctl_lower() being called with kernel_cfg-\u003Eifr as NULL.  The generic_hwtstamp_ioctl_lower() function does not expect a NULL ifr and dereferences it, leading to a system crash.  Fix this by adding a NULL check for kernel_cfg-\u003Eifr in generic_hwtstamp_ioctl_lower(). If ifr is NULL, return -EINVAL.",
  "published": "2025-12-04T16:16:19Z",
  "severity": "",
  "epss": 0.002,
  "epssPercentile": 0.09866,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "dtb-aarch64",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "SUSE-SU-2026:20220-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20220-1",
      "released": "2026-02-02T10:12:16Z"
    },
    {
      "platform": "linux",
      "product": "kernel-azure",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
    },
    {
      "platform": "linux",
      "product": "kernel-azure",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "SUSE-SU-2026:20220-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20220-1",
      "released": "2026-02-02T10:12:16Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "SUSE-SU-2026:20220-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20220-1",
      "released": "2026-02-02T10:12:16Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default-base",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1.160000.2.6",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default-base",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.9.1.160000.2.6",
      "fix": "SUSE-SU-2026:20220-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20220-1",
      "released": "2026-02-02T10:12:16Z"
    },
    {
      "platform": "linux",
      "product": "kernel-docs",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
    },
    {
      "platform": "linux",
      "product": "kernel-docs",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "SUSE-SU-2026:20220-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20220-1",
      "released": "2026-02-02T10:12:16Z"
    },
    {
      "platform": "linux",
      "product": "kernel-kvmsmall",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
    },
    {
      "platform": "linux",
      "product": "kernel-kvmsmall",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "SUSE-SU-2026:20220-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20220-1",
      "released": "2026-02-02T10:12:16Z"
    },
    {
      "platform": "linux",
      "product": "kernel-obs-build",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
    },
    {
      "platform": "linux",
      "product": "kernel-obs-qa",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
    },
    {
      "platform": "linux",
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      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "SUSE-SU-2026:20220-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20220-1",
      "released": "2026-02-02T10:12:16Z"
    },
    {
      "platform": "linux",
      "product": "kernel-rt",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
    },
    {
      "platform": "linux",
      "product": "kernel-source",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
    },
    {
      "platform": "linux",
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      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "SUSE-SU-2026:20220-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20220-1",
      "released": "2026-02-02T10:12:16Z"
    },
    {
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      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
    },
    {
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      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "SUSE-SU-2026:20220-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20220-1",
      "released": "2026-02-02T10:12:16Z"
    },
    {
      "platform": "linux",
      "product": "kernel-zfcpdump",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
    },
    {
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      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20220-1",
      "released": "2026-02-02T10:12:16Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.17.10-1",
      "fix": "DEBIAN-CVE-2025-40255",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-40255",
      "released": "2025-12-04T16:16:19Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}