CyberRota Analysis
AI-GeneratedThe vulnerability affects the ath11k driver in the Linux kernel, where improper handling of buffer deallocation during device unbinding can lead to a double free error. This issue may result in system instability or crashes, particularly in virtual machine environments where MSI addressing initialization fails. Linux system administrators and developers utilizing the ath11k driver should prioritize addressing this vulnerability to enhance system reliability.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix warning when unbinding If there is an error during some initialization related to firmware, the buffers dp->tx_ring[i].tx_status are released. However this is released again when the device is unbinded (ath11k_pci), and we get: WARNING: CPU: 0 PID: 6231 at mm/slub.c:4368 free_large_kmalloc+0x57/0x90 Call Trace: free_large_kmalloc ath11k_dp_free ath11k_core_deinit ath11k_pci_remove ... The issue is always reproducible from a VM because the MSI addressing initialization is failing. In order to fix the issue, just set the buffers to NULL after releasing in order to avoid the double free.