CVE-2023-53479

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> cxl/acpi: Fix a use-after-free in cxl_parse_cfmws()<br /> <br /> KASAN and KFENCE detected an user-after-free in the CXL driver. This<br /> happens in the cxl_decoder_add() fail path. KASAN prints the following<br /> error:<br /> <br /> BUG: KASAN: slab-use-after-free in cxl_parse_cfmws (drivers/cxl/acpi.c:299)<br /> <br /> This happens in cxl_parse_cfmws(), where put_device() is called,<br /> releasing cxld, which is accessed later.<br /> <br /> Use the local variables in the dev_err() instead of pointing to the<br /> released memory. Since the dev_err() is printing a resource, change the open<br /> coded print format to use the %pr format specifier.