Bug 2348164 (CVE-2022-49676)

Summary: CVE-2022-49676 kernel: memory: samsung: exynos5422-dmc: Fix refcount leak in of_get_dram_timings
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-02-26 03:19:51 UTC 
In the Linux kernel, the following vulnerability has been resolved:

memory: samsung: exynos5422-dmc: Fix refcount leak in of_get_dram_timings

of_parse_phandle() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
This function doesn't call of_node_put() in some error paths.
To unify the structure, Add put_node label and goto it on errors.
Comment 1 Avinash Hanwate 2025-02-26 12:37:29 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022625-CVE-2022-49676-d16b@gregkh/T
Comment 2 Avinash Hanwate 2025-02-26 16:51:09 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022625-CVE-2022-49676-d16b@gregkh/T