CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's handling of Wi-Fi packets, specifically within the rtw88 driver, where an out-of-bounds read can occur due to improper validation of packet length and offset calculations. This flaw could lead to potential information disclosure or system instability, particularly in environments utilizing PCIe interfaces for Wi-Fi communication. Organizations using Linux systems with the affected kernel should prioritize patching to mitigate risks associated with this vulnerability.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer In rtw_pci_rx_napi(), new_len is computed as the sum of pkt_len (14-bit descriptor field, max 16383) and pkt_offset (drv_info_sz + shift, both firmware-controlled). The result can exceed RTK_PCI_RX_BUF_SIZE (11478), causing an out-of-bounds read from the pre-allocated DMA buffer when skb_put_data copies new_len bytes. The USB transport already validates this (rtw_usb_rx_data_put checks against RTW_USB_MAX_RECVBUF_SZ); the PCIe path does not. Add a check that new_len does not exceed the DMA buffer size.