{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-98419",
  "modified": "2026-10-14T19:51:56Z",
  "upstream": [
    "CVE-2026-98419"
  ],
  "published": "2026-10-14T13:30:30Z",
  "summary": "drop_monitor: fix out-of-bounds write in reset_per_cpu_data()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrop_monitor: fix out-of-bounds write in reset_per_cpu_data()\n\nIn reset_per_cpu_data(), al is computed as:\n\n    al = sizeof(struct net_dm_alert_msg);\n    al += dm_hit_limit * sizeof(struct net_dm_drop_point);\n    al += sizeof(struct nlattr);\n\n    skb = genlmsg_new(al, GFP_KERNEL);\n    ...\n    nla = nla_reserve(skb, NLA_UNSPEC, sizeof(struct net_dm_alert_msg));\n    ...\n    msg = nla_data(nla);\n    memset(msg, 0, al);\n\nBecause al includes sizeof(struct nlattr) (the 4-byte attribute header),\ngenlmsg_new() allocates al bytes of tailroom starting at nla.\nHowever, msg points to nla_data(nla), which is located\nsizeof(struct nlattr) bytes past nla. Calling memset(msg, 0, al)\ntherefore writes al bytes starting from msg, exceeding the allocated\nbuffer by sizeof(struct nlattr) (4 bytes) and corrupting\nskb_shared_info.\n\nFix this by letting al represent only the payload length, allocating\nthe skb with genlmsg_new(nla_total_size(al), GFP_KERNEL), and zeroing\nal bytes from msg.",
  "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": "6.1.189",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-98419"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/caf09c09e0f323015ab6777ed1bad5aa10688631"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/56b12f0cd476e4d90a0e2663a80102b388ebf78c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/88d640efd655b10f9fa4e381caf777da1f17c2a6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d54a044136b129822715e8798899af540ec7a9e9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8a04047c6dbff2f49a561b1ff53b043f4807e855"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/530ae0a1458078c7a81fbffd9ff17d42129364d9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/03b672eba4937ff18337049824a114012d57f202"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/439f392084f8f7f59ab9d47a9579185accefe1d8"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-10-14T13:30:30Z"
  }
}