{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-53304",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2023-53304"
  ],
  "published": "2025-09-16T16:13:45Z",
  "summary": "netfilter: nft_set_rbtree: fix overlap expiration walk",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_set_rbtree: fix overlap expiration walk\n\nThe lazy gc on insert that should remove timed-out entries fails to release\nthe other half of the interval, if any.\n\nCan be reproduced with tests/shell/testcases/sets/0044interval_overlap_0\nin nftables.git and kmemleak enabled kernel.\n\nSecond bug is the use of rbe_prev vs. prev pointer.\nIf rbe_prev() returns NULL after at least one iteration, rbe_prev points\nto element that is not an end interval, hence it should not be removed.\n\nLastly, check the genmask of the end interval if this is active in the\ncurrent generation.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.21-1+rpt1"
      ],
      "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"
          }
        ]
      },
      "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": "6.1.43"
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-53304"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8284a79136c384059e85e278da2210b809730287"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/acaee227cf79c45a5d2d49c3e9a66333a462802c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/893cb3c3513cf661a0ff45fe0cfa83fe27131f76"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/50cbb9d195c197af671869c8cadce3bd483735a0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/89a4d1a89751a0fbd520e64091873e19cc0979e8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cd66733932399475fe933cb3ec03e687ed401462"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f718863aca469a109895cb855e6b81fff4827d71"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-24T06:48:58Z"
  }
}