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    "cveMetadata": {
        "cveId": "CVE-2021-47195",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-03-25T09:12:14.114Z",
        "datePublished": "2024-04-10T18:56:31.999Z",
        "dateUpdated": "2026-05-23T15:19:30.977Z"
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                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: fix use-after-free of the add_lock mutex\n\nCommit 6098475d4cb4 (\"spi: Fix deadlock when adding SPI controllers on\nSPI buses\") introduced a per-controller mutex. But mutex_unlock() of\nsaid lock is called after the controller is already freed:\n\n  spi_unregister_controller(ctlr)\n  -> put_device(&ctlr->dev)\n    -> spi_controller_release(dev)\n  -> mutex_unlock(&ctrl->add_lock)\n\nMove the put_device() after the mutex_unlock()."
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                    "url": "https://git.kernel.org/stable/c/54c2c96eafcfd242e52e932ab54ace4784efe1dd"
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                {
                    "url": "https://git.kernel.org/stable/c/6c53b45c71b4920b5e62f0ea8079a1da382b9434"
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