{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b1ae6dc41eaaa98bb75671e0f3665bfda248c3e7"
            },
            {
              "fixed": "e7f174715f9f0cbcb9e87b52e4fc4ef149baac98"
            },
            {
              "fixed": "afcc0515bbdd28d509a2b5870faaa89b137f5d53"
            },
            {
              "fixed": "168072baf9ad516d5a06046514c7fea4c0671990"
            },
            {
              "fixed": "a82e170637e050a803b4f37542371ef216bf66d2"
            },
            {
              "fixed": "e7da02659c229f73492fb1ed87ceda4090153aaa"
            },
            {
              "fixed": "786d2d84416a9a1c1a47b71a68d679d886284be2"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.17.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.96"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.39"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64297.json"
  },
  "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-\u003epages remains NULL and\ninfo-\u003emax_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-\u003eused_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.]",
  "id": "CVE-2026-64297",
  "modified": "2026-07-27T03:56:45.508284636Z",
  "published": "2026-07-25T08:49:34.486Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/168072baf9ad516d5a06046514c7fea4c0671990"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/786d2d84416a9a1c1a47b71a68d679d886284be2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a82e170637e050a803b4f37542371ef216bf66d2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/afcc0515bbdd28d509a2b5870faaa89b137f5d53"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7da02659c229f73492fb1ed87ceda4090153aaa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7f174715f9f0cbcb9e87b52e4fc4ef149baac98"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64297.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64297"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "module: decompress: check return value of module_extend_max_pages()"
}