CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's wilc1000 Wi-Fi driver, where a failure to acquire the bus can lead to a memory leak of the allocated dma_buffer due to an improper early return. This can result in increased memory consumption and potential denial of service if exploited. Linux system administrators and developers working with the affected kernel versions should prioritize applying the fix to prevent resource leaks and maintain system stability.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: wifi: wilc1000: fix dma_buffer leak on bus acquire failure wilc_wlan_firmware_download() allocates dma_buffer with kmalloc() at the top of the function and uses a 'fail:' label to free it via kfree(dma_buffer) on error. All later error paths correctly use 'goto fail' to route through this cleanup. However, the early failure path after the first acquire_bus() call uses a bare 'return ret;', which leaks dma_buffer whenever the bus acquire fails. Replace the early return with goto fail so the existing cleanup path runs. Found via a custom Coccinelle semantic patch hunting for kmalloc'd locals leaked on early-return error paths in driver firmware-download code.
Related CVEs
Other vulnerabilities affecting the same vendor(s)