CVE-2022-49680 Information

Description

In the Linux kernel the following vulnerability has been resolved:

ARM: exynos: Fix refcount leak in exynos_map_pmu

of_find_matching_node() returns a node pointer with refcount incremented we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak. of_node_put() checks null pointer.

Reference

https://git.kernel.org/stable/c/31d09571bb071c20f6bdc0bb7ac1ef8dd2987c04 https://git.kernel.org/stable/c/545ae5cbae839ce39bfe09828e413f1c916082de https://git.kernel.org/stable/c/68f28d52e6cbab8dcfa249cac4356d1d0573e868 https://git.kernel.org/stable/c/7571bcecf01b69f0d3ec60ca41ce5d4c75411a4a https://git.kernel.org/stable/c/c4c79525042a4a7df96b73477feaf232fe44ae81 https://git.kernel.org/stable/c/d23f76018e17618559da9eea179d137362023f95 https://git.kernel.org/stable/c/f9b77a52937582a5b99a5a07e4ef1e2f48f87347 https://git.kernel.org/stable/c/fc354856e9fad9cd36e2ad28f9da70716025055a