جزئیات آسیب‌پذیری

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB read in OnAssocRsp() IE loop The IE parsing loop in OnAssocRsp() advances by (pIE->length + 2) each iteration but only guards on i < pkt_len. When a malicious AP sends an AssocResponse whose last IE has only one byte remaining in the frame (the element_id byte lands at pkt_len-1), the loop reads pIE->length from pframe[pkt_len], which is one byte past the allocated receive buffer. Additionally, even when the header bytes are in bounds, pIE->length itself can extend the data window beyond pkt_len, silently passing a truncated IE to the handler functions. Add two guards at the top of the loop body: 1. Break if fewer than sizeof(*pIE) bytes remain (can't read header). 2. Break if the IE's declared data extends past pkt_len.

• https://git.kernel.org/stable/c/3ae0577d3be9f1e2707cce4749da250054e25e3f
• https://git.kernel.org/stable/c/889ca6000ac7fa73457b041848fcb08e0d51b809
• https://git.kernel.org/stable/c/1a52a05471494546f955a58e8c170c0c796c52d5
• https://git.kernel.org/stable/c/0406d746574e875d8778552eb674fcfbf5330bfb
• https://git.kernel.org/stable/c/0970dd47726a57e52013594e9fbf667586eb3673
• https://git.kernel.org/stable/c/04f612dc03427e0b1ac80a2611b5ac0ba93ac446
• https://git.kernel.org/stable/c/7e7741c8315e4160aead00a60cdd6f81ab880717
• https://git.kernel.org/stable/c/f9654207e92283e0acac5d64fe5f8835383b5a23