{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-39482",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-39482"
  ],
  "published": "2024-07-05T06:55:29Z",
  "summary": "bcache: fix variable length array abuse in btree_iter",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbcache: fix variable length array abuse in btree_iter\n\nbtree_iter is used in two ways: either allocated on the stack with a\nfixed size MAX_BSETS, or from a mempool with a dynamic size based on the\nspecific cache set. Previously, the struct had a fixed-length array of\nsize MAX_BSETS which was indexed out-of-bounds for the dynamically-sized\niterators, which causes UBSAN to complain.\n\nThis patch uses the same approach as in bcachefs's sort_iter and splits\nthe iterator into a btree_iter with a flexible array member and a\nbtree_iter_stack which embeds a btree_iter as well as a fixed-length\ndata array.",
  "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": "6.1.94",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-39482"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2c3d7b03b658dc8bfa6112b194b67b92a87e081b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5a1922adc5798b7ec894cd3f197afb6f9591b023"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/934e1e4331859183a861f396d7dfaf33cb5afb02"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6479b9f41583b013041943c4602e1ad61cec8148"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0c31344e22dd8d6b1394c6e4c41d639015bdc671"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3a861560ccb35f2a4f0a4b8207fa7c2a35fc7f31"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T11:52:36Z"
  }
}