{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-39839",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-39839"
  ],
  "published": "2025-09-19T15:28:22Z",
  "summary": "batman-adv: fix OOB read/write in network-coding decode",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: fix OOB read/write in network-coding decode\n\nbatadv_nc_skb_decode_packet() trusts coded_len and checks only against\nskb->len. XOR starts at sizeof(struct batadv_unicast_packet), reducing\npayload headroom, and the source skb length is not verified, allowing an\nout-of-bounds read and a small out-of-bounds write.\n\nValidate that coded_len fits within the payload area of both destination\nand source sk_buffs before XORing.",
  "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": "6.1.151",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-39839"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/30fc47248f02b8a14a61df469e1da4704be1a19f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1e36c6c8dc8023b4bbe9a16e819f9998b9b6a183"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5d334bce9fad58cf328d8fa14ea1fff855819863"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/dce6c2aa70e94c04c523b375dfcc664d7a0a560a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/bb37252c9af1cb250f34735ee98f80b46be3cef1"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/20080709457bc1e920eb002483d7d981d9b2ac1c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a67c6397fcb7e842d3c595243049940970541c48"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d77b6ff0ce35a6d0b0b7b9581bc3f76d041d4087"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T12:19:11Z"
  }
}