CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's sungem network driver, specifically in the error handling during device initialization. If the registration of the network device fails, the driver improperly cleans up resources, potentially leading to resource leaks or inconsistent device states. System administrators and developers working with Linux kernel environments, particularly those utilizing the sungem driver, should prioritize addressing this issue to ensure stable and secure network operations.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: net: sungem: fix probe error cleanup gem_init_one() calls gem_remove_one() when register_netdev() fails. gem_remove_one() unregisters and frees resources owned by the net_device, including the DMA block, MMIO mapping, PCI regions, and the net_device itself. gem_init_one() then falls through to its own cleanup labels and frees the same resources again. Keep the register_netdev() error path in gem_init_one(): clear drvdata so PM/remove paths do not see a half-registered device, remove the NAPI instance added during probe, and let the existing cleanup labels release the resources once. The issue was found by a local static-analysis checker for probe error paths. The reported path was manually inspected before sending this fix. Compile-tested with CONFIG_SUNGEM=y. Runtime testing was not performed because no sungem hardware is available.