{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-64297",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-64297"
  ],
  "published": "2026-07-25T08:51:45Z",
  "summary": "module: decompress: check return value of module_extend_max_pages()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmodule: decompress: check return value of module_extend_max_pages()\n\nmodule_extend_max_pages() calls kvrealloc() internally and returns\n-ENOMEM on allocation failure. The return value is never checked.\n\nIf the initial allocation fails, info->pages remains NULL and\ninfo->max_pages remains 0. Subsequent calls to module_get_next_page()\nwill attempt to dynamically grow the array by calling\nmodule_extend_max_pages(info, 0) since info->used_pages is 0. This\nresults in kvrealloc(NULL, 0) returning ZERO_SIZE_PTR, which is treated\nas a success, leading to a dereference of ZERO_SIZE_PTR and a kernel\noops.\n\nFix: add the missing error check after module_extend_max_pages() and\nreturn immediately on failure. This matches the pattern used by every\nother kvrealloc() caller in the module loading path.\n\n[Sami: Corrected the analysis in the commit message.]",
  "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": "6.1.178",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-64297"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e7f174715f9f0cbcb9e87b52e4fc4ef149baac98"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/afcc0515bbdd28d509a2b5870faaa89b137f5d53"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/168072baf9ad516d5a06046514c7fea4c0671990"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a82e170637e050a803b4f37542371ef216bf66d2"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e7da02659c229f73492fb1ed87ceda4090153aaa"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/786d2d84416a9a1c1a47b71a68d679d886284be2"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-17T05:24:08Z"
  }
}