CVE-2022-49462 Information

Description

In the Linux kernel the following vulnerability has been resolved:

drm/msm/a6xx: Fix refcount leak in a6xx_gpu_init

of_parse_phandle() returns a node pointer with refcount incremented we should use of_node_put() on it when not need anymore.

a6xx_gmu_init() passes the node to of_find_device_by_node() and of_dma_configure() of_find_device_by_node() will takes its reference of_dma_configure() doesn’t need the node after usage.

Add missing of_node_put() to avoid refcount leak.

Reference

https://git.kernel.org/stable/c/06907a374f1b74f8f2fb30720dc6df81331e4fb5 https://git.kernel.org/stable/c/48e82ce8cdb19c20a5020fa446b286d6a147450c https://git.kernel.org/stable/c/65ddbc0d26824e2a5d6154d01d8cf39344900213 https://git.kernel.org/stable/c/6832e36f156ea35a6ed74bca72727806116effdd https://git.kernel.org/stable/c/c56de483093d7ad0782327f95dda7da97bc4c315 https://git.kernel.org/stable/c/edff4c1af831d0c02e654eed9da7d74174de49d5