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ec1fcddb31
In scpsys_get_bus_protection_legacy(), of_find_node_with_property()
returns a device node with its reference count incremented. The function
then calls of_node_put(node) before checking whether
syscon_regmap_lookup_by_phandle() returns an error. If an error occurs,
dev_err_probe() dereferences the node pointer to print diagnostic
information, but the node memory may have already been freed due to the
earlier of_node_put(), leading to a use-after-free vulnerability.
Fix this by moving the of_node_put() call after the error check, ensuring
the node is still valid when accessed in the error path.
Fixes:
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|---|---|---|
| .. | ||
| airoha-cpu-pmdomain.c | ||
| Kconfig | ||
| Makefile | ||
| mt6735-pm-domains.h | ||
| mt6795-pm-domains.h | ||
| mt6893-pm-domains.h | ||
| mt8167-pm-domains.h | ||
| mt8173-pm-domains.h | ||
| mt8183-pm-domains.h | ||
| mt8186-pm-domains.h | ||
| mt8188-pm-domains.h | ||
| mt8189-pm-domains.h | ||
| mt8192-pm-domains.h | ||
| mt8195-pm-domains.h | ||
| mt8196-pm-domains.h | ||
| mt8365-pm-domains.h | ||
| mtk-mfg-pmdomain.c | ||
| mtk-pm-domains.c | ||
| mtk-pm-domains.h | ||
| mtk-scpsys.c | ||