CVE-2023-53856

In the Linux kernel, the following vulnerability has been resolved: of: overlay: Call of_changeset_init() early When of_overlay_fdt_apply() fails, the changeset may be partially applied, and the caller is still expected to call of_overlay_remove() to clean up this partial state. However, of_overlay_apply() calls of_resolve_phandles() before init_overlay_changeset(). Hence if the overlay fails to apply due to an unresolved symbol, the overlay_changeset.cset.entries list is still uninitialized, and cleanup will crash with a NULL-pointer dereference in overlay_removal_is_ok(). Fix this by moving the call to of_changeset_init() from init_overlay_changeset() to of_overlay_fdt_apply(), where all other early initialization is done.

The following products are affected by CVE-2023-53856 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2023-53856.

URL	Resource
https://git.kernel.org/stable/c/01bb96ad38089f5cc6de7746dac13437d35eb1dc
https://git.kernel.org/stable/c/3fb210cd521c9efcb211e9f5ce40fc907200bf13
https://git.kernel.org/stable/c/a9515ff4fb142b690a0d2b58782b15903b990dba
https://git.kernel.org/stable/c/be86241bf5d1efd16d8a7231c13b33459c5d755d
https://git.kernel.org/stable/c/c403c81b577a67fe9ec6a2e89d143256487be50f
https://lore.kernel.org/linux-cve-announce/2025120903-CVE-2023-53856-ed42@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2023-53856
https://www.cve.org/CVERecord?id=CVE-2023-53856