{"id":"CVE-2025-22084","summary":"w1: fix NULL pointer dereference in probe","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nw1: fix NULL pointer dereference in probe\n\nThe w1_uart_probe() function calls w1_uart_serdev_open() (which includes\ndevm_serdev_device_open()) before setting the client ops via\nserdev_device_set_client_ops(). This ordering can trigger a NULL pointer\ndereference in the serdev controller's receive_buf handler, as it assumes\nserdev-\u003eops is valid when SERPORT_ACTIVE is set.\n\nThis is similar to the issue fixed in commit 5e700b384ec1\n(\"platform/chrome: cros_ec_uart: properly fix race condition\") where\ndevm_serdev_device_open() was called before fully initializing the\ndevice.\n\nFix the race by ensuring client ops are set before enabling the port via\nw1_uart_serdev_open().","modified":"2026-03-20T12:41:18.858451Z","published":"2025-04-16T14:12:32.950Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22084.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0dd6770a72f138dabea9eae87f3da6ffa68f0d06"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4f750b84628080ff0d67bf1af67a4967b740acf2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/64ab50577c59bb7049bec6b5c42d1c38e4029f29"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cc6b0ec7cccbf66ef3621e9e93296b7bd1f52298"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22084.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-22084"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a3c08804364e80328a9ffdac59bb26676b938195"},{"fixed":"4f750b84628080ff0d67bf1af67a4967b740acf2"},{"fixed":"64ab50577c59bb7049bec6b5c42d1c38e4029f29"},{"fixed":"cc6b0ec7cccbf66ef3621e9e93296b7bd1f52298"},{"fixed":"0dd6770a72f138dabea9eae87f3da6ffa68f0d06"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-22084.json"}}],"schema_version":"1.7.5"}