{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-53995",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2023-53995"
  ],
  "published": "2025-12-24T10:57:20Z",
  "summary": "net: ipv4: fix one memleak in __inet_del_ifa()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ipv4: fix one memleak in __inet_del_ifa()\n\nI got the below warning when do fuzzing test:\nunregister_netdevice: waiting for bond0 to become free. Usage count = 2\n\nIt can be repoduced via:\n\nip link add bond0 type bond\nsysctl -w net.ipv4.conf.bond0.promote_secondaries=1\nip addr add 4.117.174.103/0 scope 0x40 dev bond0\nip addr add 192.168.100.111/255.255.255.254 scope 0 dev bond0\nip addr add 0.0.0.4/0 scope 0x40 secondary dev bond0\nip addr del 4.117.174.103/0 scope 0x40 dev bond0\nip link delete bond0 type bond\n\nIn this reproduction test case, an incorrect 'last_prim' is found in\n__inet_del_ifa(), as a result, the secondary address(0.0.0.4/0 scope 0x40)\nis lost. The memory of the secondary address is leaked and the reference of\nin_device and net_device is leaked.\n\nFix this problem:\nLook for 'last_prim' starting at location of the deleted IP and inserting\nthe promoted IP into the location of 'last_prim'.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.21-1+rpt1",
        "1:6.1.47-1+rpt2",
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v6",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v7",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v7l",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v8",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi2-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt2"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi2-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt2"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi2-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt2"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi2-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt2"
          },
          {
            "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": {
          "1:6.1.21-1+rpt1": {
            "linux_commit": "0afb5e98488aed7017b9bf321b575d0177feb7ed",
            "upstream_version": "6.1.21",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.54"
          },
          "1:6.1.47-1+rpt2": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.54"
          },
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.54",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-53995"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5624f26a3574500ce23929cb2c9976a0dec9920a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7c8ddcdab1b900bed69cad6beef477fff116289e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2f1e86014d0cc084886c36a2d77bc620e2d42618"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/980f8445479814509a3cd55a8eabaae1c9030a4c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/42652af5360d30b43b06057c193739e7dfb18f42"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ac28b1ec6135649b5d78b028e47264cb3ebca5ea"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}