CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's handling of Information Elements (IE) in association request and join command processes, specifically in the rtl8723bs driver. Attackers can exploit this flaw by sending specially crafted access point (AP) frames that contain truncated IEs, leading to out-of-bounds reads and potential memory corruption. Organizations using affected Linux systems, particularly those relying on wireless networking, should prioritize applying the patch to mitigate the risk of exploitation.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB reads in IE loops in issue_assocreq() and join_cmd_hdl() Two IE parsing loops are missing the header bounds checks before they dereference pIE->length: - issue_assocreq() walks pmlmeinfo->network.ies to build the association request. If the stored IE data ends with only an element_id byte and no length byte, pIE->length is read one byte past the end of the buffer. - join_cmd_hdl() walks pnetwork->ies during station join and has the same problem under the same conditions. Both buffers are filled from AP beacon and probe-response frames, so a malicious AP that sends a truncated final IE can trigger the issue. Apply the two-guard pattern established in update_beacon_info(): 1. Break if fewer than sizeof(*pIE) bytes remain. 2. Break if the IE's declared data extends past the buffer end.