CVE-2026-64444

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 889ca6000ac7fa73457b041848fcb08e0d51b809affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 1a52a05471494546f955a58e8c170c0c796c52d5affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 0406d746574e875d8778552eb674fcfbf5330bfbaffected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 0970dd47726a57e52013594e9fbf667586eb3673affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 04f612dc03427e0b1ac80a2611b5ac0ba93ac446affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 7e7741c8315e4160aead00a60cdd6f81ab880717affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < f9654207e92283e0acac5d64fe5f8835383b5a23affected
LinuxLinux4.12affected
LinuxLinux0 < 4.12unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.96 <= 6.12.*unaffected
LinuxLinux6.18.39 <= 6.18.*unaffected
LinuxLinux7.1.4 <= 7.1.*unaffected
LinuxLinux7.2-rc3 <= *unaffected

Weaknesses

References