CVE-2022-49836 Information

Description

In the Linux kernel the following vulnerability has been resolved:

siox: fix possible memory leak in siox_device_add()

If device_register() returns error in siox_device_add() the name allocated by dev_set_name() need be freed. As comment of device_register() says it should use put_device() to give up the reference in the error path. So fix this by calling put_device() then the name can be freed in kobject_cleanup() and sdevice is freed in siox_device_release() set it to null in error path.

Reference

https://git.kernel.org/stable/c/0a5da069603ecc3d7aa09167450235462adaa295 https://git.kernel.org/stable/c/5d03c2911c529ea4d6ebfec53425f1091e8d402b https://git.kernel.org/stable/c/6e63153db50059fb78b8a8447b132664887d24e3 https://git.kernel.org/stable/c/a4b5423f88a17a36550ae8c16c46779b1ee42f4b https://git.kernel.org/stable/c/d9c31e728843259209fb530c59995e4fe262699f https://git.kernel.org/stable/c/f9fe7ba4ea5b24ffdf8e125f660aca3ba4a147fb