{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2"
            },
            {
              "fixed": "f1adeb1ff8bef1467d6961059810795d02bbad5d"
            },
            {
              "fixed": "99381e762273a2410a3f0216000be32b013c0ea9"
            },
            {
              "fixed": "1a160076d3d0dcd4a98a4599ad96eec0790b099b"
            },
            {
              "fixed": "c32df11147822d22facee8fa30c2e8971d12f426"
            },
            {
              "fixed": "86c9ee928c4a370e323e432aaf8dca79c4ba7c85"
            },
            {
              "fixed": "f5c772b76bbd95de8be51cf849c6098f6af6fcf9"
            },
            {
              "fixed": "dbb500bad02146b388041877574829016591ddc8"
            },
            {
              "fixed": "1f0bdc2884b67de337215079bba166df0cdf4ac5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.5.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "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-2026-64329.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: ucsi: ccg: Fix use-after-free of ucsi on remove\n\nThe threaded IRQ handler ccg_irq_handler() calls ucsi_notify_common(),\nwhich on a connector-change event calls ucsi_connector_change() and\nschedules connector work.  In ucsi_ccg_remove(), ucsi_destroy() frees\nuc-\u003eucsi (kfree) before free_irq() is called, so a handler invocation\nalready in flight may access the freed object after ucsi_destroy().\n\n  CPU 0 (remove)            | CPU 1 (threaded IRQ)\n    ucsi_destroy(uc-\u003eucsi)  |   ccg_irq_handler()\n      kfree(ucsi) // FREE   |     ucsi_notify_common(uc-\u003eucsi) // USE\n\nMove free_irq() before ucsi_destroy() in the remove path.  It is kept\nafter ucsi_unregister(): ucsi_unregister() cancels connector work whose\nhandler issues GET_CONNECTOR_STATUS through ucsi_send_command_common(),\nwhich waits for a completion that is signalled from the IRQ handler, so\nthe IRQ must stay active until that work has been cancelled.\n\nThe probe error path already orders free_irq() before ucsi_destroy().\n\nThis bug was found by static analysis.",
  "id": "CVE-2026-64329",
  "modified": "2026-07-27T03:56:26.769327483Z",
  "published": "2026-07-25T08:49:57.098Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1a160076d3d0dcd4a98a4599ad96eec0790b099b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1f0bdc2884b67de337215079bba166df0cdf4ac5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/86c9ee928c4a370e323e432aaf8dca79c4ba7c85"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/99381e762273a2410a3f0216000be32b013c0ea9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c32df11147822d22facee8fa30c2e8971d12f426"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dbb500bad02146b388041877574829016591ddc8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1adeb1ff8bef1467d6961059810795d02bbad5d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f5c772b76bbd95de8be51cf849c6098f6af6fcf9"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64329.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64329"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "usb: typec: ucsi: ccg: Fix use-after-free of ucsi on remove"
}