{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-53238",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-53238"
  ],
  "published": "2026-06-25T08:41:40Z",
  "summary": "netlabel: validate unlabeled address and mask attribute lengths",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetlabel: validate unlabeled address and mask attribute lengths\n\nnetlbl_unlabel_addrinfo_get() used the address attribute length to\ndetermine whether the attribute data could be read as an IPv4 or IPv6\naddress, but did not independently validate the corresponding mask\nattribute length.  A crafted Generic Netlink request could therefore\nprovide a valid IPv4/IPv6 address attribute with a shorter mask\nattribute, which would later be read as a full struct in_addr or\nstruct in6_addr.\n\nNLA_BINARY policy lengths are maximum lengths by default, so use\nNLA_POLICY_EXACT_LEN() for the unlabeled IPv4/IPv6 address and mask\nattributes.  This rejects short attributes during policy validation and\nalso exposes the exact length requirements through policy introspection.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.176",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-53238"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/975a84fd741440853380d37465b6e226cf47254c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/672f0f3b8f875ffe6525a37847eafa7648c4c0c6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/95bda3eac0b1454c2cee98d58d9ba6dd8391e843"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/07a18f5c90dd3d586b73242f5a5bbf0a72f2fdc6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/71c52da13c3737493b42d20d9f33de34e03b3156"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0c4bb32ad7fdc2dc6a8050f41eb04d4bda56b6c8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ccfe292a966079c61ea68a2da303b2a336170993"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9772589b57e44aedc240211c5c3f7a684a034d3a"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-06-25T08:41:40Z"
  }
}