{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b7fe4c0019b12d60ece3e99eeb0ccfd5a1d103e5"
            },
            {
              "fixed": "b5ddc7257bee71f5b8cf9083e2b0ac0427e9fbb3"
            },
            {
              "fixed": "837c1f9655421055f751ed34745e820a54a27642"
            },
            {
              "fixed": "d3a9a8cf2d7fd61a2f63df61f6cbc0a9bb007cc0"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.17.0"
            },
            {
              "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-2026-64447.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: media: ipu7: fix double-free and use-after-free in error paths\n\nIn both ipu7_isys_init() and ipu7_psys_init(), pdata is allocated and\nthen passed to ipu7_bus_initialize_device(), which stores it in\nadev-\u003epdata. The ipu7_bus_release() function frees adev-\u003epdata when the\ndevice's reference count drops to zero.\n\nTwo error paths incorrectly call kfree(pdata) after the device teardown\nhas already freed it:\n\n1. When ipu7_mmu_init() fails: put_device() is called, which drops the\n   reference count to zero and triggers ipu7_bus_release() -\u003e\n   kfree(pdata). The subsequent kfree(pdata) is a double-free.\n\n2. When ipu7_bus_add_device() fails: it calls auxiliary_device_uninit()\n   internally, which calls put_device() -\u003e ipu7_bus_release() -\u003e\n   kfree(pdata). The subsequent kfree(pdata) is again a double-free.\n\nNote that the kfree(pdata) when ipu7_bus_initialize_device() itself\nfails is correct, because in that case auxiliary_device_init() failed\nand the release function was never set up, so pdata must be freed\nmanually.\n\nAdditionally, the error code was not saved before calling put_device(),\ncausing ERR_CAST() to dereference the already-freed adev pointer when\nconstructing the return value. Fix this by saving the error from\ndev_err_probe() before put_device() and returning ERR_PTR() instead.\n\nRemove the redundant kfree(pdata) calls and fix the use-after-free in\nthe return values of the two affected error paths.",
  "id": "CVE-2026-64447",
  "modified": "2026-07-28T03:55:48.887038390Z",
  "published": "2026-07-25T08:51:18.096Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/837c1f9655421055f751ed34745e820a54a27642"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b5ddc7257bee71f5b8cf9083e2b0ac0427e9fbb3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3a9a8cf2d7fd61a2f63df61f6cbc0a9bb007cc0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64447.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64447"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "staging: media: ipu7: fix double-free and use-after-free in error paths"
}