Description
In the Linux kernel, the following vulnerability has been resolved: w1: fix NULL pointer dereference in probe The w1_uart_probe() function calls w1_uart_serdev_open() (which includes devm_serdev_device_open()) before setting the client ops via serdev_device_set_client_ops(). This ordering can trigger a NULL pointer dereference in the serdev controller's receive_buf handler, as it assumes serdev->ops is valid when SERPORT_ACTIVE is set. This is similar to the issue fixed in commit 5e700b384ec1 ("platform/chrome: cros_ec_uart: properly fix race condition") where devm_serdev_device_open() was called before fully initializing the device. Fix the race by ensuring client ops are set before enabling the port via w1_uart_serdev_open().
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
a3c08804364e80328a9ffdac59bb26676b938195 to < 4f750b84628080ff0d67bf1af67a4967b740acf2affecteda3c08804364e80328a9ffdac59bb26676b938195 to < 64ab50577c59bb7049bec6b5c42d1c38e4029f29affecteda3c08804364e80328a9ffdac59bb26676b938195 to < cc6b0ec7cccbf66ef3621e9e93296b7bd1f52298affecteda3c08804364e80328a9ffdac59bb26676b938195 to < 0dd6770a72f138dabea9eae87f3da6ffa68f0d06affected
Linux Linux
Default version status: affected
6.9affected0 to < 6.9unaffected6.12.23 to ≤ 6.12.*unaffected6.13.11 to ≤ 6.13.*unaffected6.14.2 to ≤ 6.14.*unaffected6.15 to ≤ *unaffected