CVE-2022-49668 Information

Description

In the Linux kernel the following vulnerability has been resolved:

PM / devfreq: exynos-ppmu: Fix refcount leak in of_get_devfreq_events

of_get_child_by_name() returns a node pointer with refcount incremented we should use of_node_put() on it when done. This function only calls of_node_put() in normal path missing it in error paths. Add missing of_node_put() to avoid refcount leak.

Reference

https://git.kernel.org/stable/c/01121e39ef537289926ae6f5374dce92c796d863 https://git.kernel.org/stable/c/194781229d4cbc804b8ded13156eb8addce87d6c https://git.kernel.org/stable/c/bdecd912e99acfd61507f1720d3f4eed1b3418d8 https://git.kernel.org/stable/c/e65027fdebbacd40595e96ef7b5d2418f71bddf2 https://git.kernel.org/stable/c/f44b799603a9b5d2e375b0b2d54dd0b791eddfc2