CVE-2022-49716 Information

Description

In the Linux kernel the following vulnerability has been resolved:

irqchip/gic-v3: Fix error handling in gic_populate_ppi_partitions

of_get_child_by_name() returns a node pointer with refcount incremented we should use of_node_put() on it when not need anymore. When kcalloc fails it missing of_node_put() and results in refcount leak. Fix this by goto out_put_node label.

Reference

https://git.kernel.org/stable/c/0b325d993995a321f6ab4e6c51f0504ec092bf5b https://git.kernel.org/stable/c/58e67c81e229351027d28c610638378606e33a08 https://git.kernel.org/stable/c/7c9dd9d23f26dabcfb14148b9acdfba540418b19 https://git.kernel.org/stable/c/c83c34c57798fc41faefcf078be78683db2f4beb https://git.kernel.org/stable/c/ec8401a429ffee34ccf38cebf3443f8d5ae6cb0d