CVE-2022-49455 Information

Description

In the Linux kernel the following vulnerability has been resolved:

misc: ocxl: fix possible double free in ocxl_file_register_afu

info_release() will be called in device_unregister() when info->dev’s reference count is 0. So there is no need to call ocxl_afu_put() and kfree() again.

Fix this by adding free_minor() and return to err_unregister error path.

Reference

https://git.kernel.org/stable/c/252768d32e92c1214aeebb5fec0844ca479bcf5c https://git.kernel.org/stable/c/8fb674216835e1f0c143762696d645facebb4685 https://git.kernel.org/stable/c/950cf957fe34d40d63dfa3bf3968210430b6491e https://git.kernel.org/stable/c/9e9087cf34ee69f4e95d146ac29385d6e367a97b https://git.kernel.org/stable/c/de65c32ace9aa70d51facc61ba986607075e3a25 https://git.kernel.org/stable/c/ee89d8dee55ab4b3b8ad8b70866b2841ba334767