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A double-free vulnerability in the Linux kernel USB ULPI subsystem affects the error-handling path of ulpi_register_interface(). When device_register() fails during ULPI device registration, ulpi_register() invokes put_device() on ulpi->dev. That cleanup path triggers the device release callback ulpi_dev_release(), which drops the associated Open Firmware node reference and frees the ulpi structure. The vulnerable error path in ulpi_register_interface() then performs an additional kfree() on the same ulpi object, resulting in a double free. The flaw is caused by improper ownership and lifetime handling in an error path rather than normal execution flow.
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Linux kernel USB ULPI error-path double-free vulnerability.
Double-free vulnerability in the Linux kernel ULPI USB interface registration error path.
Linux kernel USB ULPI double-free vulnerability in the ulpi_register_interface() error path.
Linux kernel USB ULPI double-free vulnerability in the ulpi_register_interface() error path. The Nessus plugin explicitly reports exploit availability for this vulnerability.
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