CVE-2023-54097

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> regulator: stm32-pwr: fix of_iomap leak<br /> <br /> Smatch reports:<br /> drivers/regulator/stm32-pwr.c:166 stm32_pwr_regulator_probe() warn:<br /> &amp;#39;base&amp;#39; from of_iomap() not released on lines: 151,166.<br /> <br /> In stm32_pwr_regulator_probe(), base is not released<br /> when devm_kzalloc() fails to allocate memory or<br /> devm_regulator_register() fails to register a new regulator device,<br /> which may cause a leak.<br /> <br /> To fix this issue, replace of_iomap() with<br /> devm_platform_ioremap_resource(). devm_platform_ioremap_resource()<br /> is a specialized function for platform devices.<br /> It allows &amp;#39;base&amp;#39; to be automatically released whether the probe<br /> function succeeds or fails.<br /> <br /> Besides, use IS_ERR(base) instead of !base<br /> as the return value of devm_platform_ioremap_resource()<br /> can either be a pointer to the remapped memory or<br /> an ERR_PTR() encoded error code if the operation fails.