CVE-2026-64442staging: rtl8723bs: fix OOB reads in IE loops in issue_assocreq() and join_cmd_hdl()

Official 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.

Affected packages & fixed versions

Affected products (as reported)

References

• https://git.kernel.org/stable/c/bc881c9915c4468747d0ca5fd1abd7b313cfb0f4
• https://git.kernel.org/stable/c/605ebd94d0f469204f3c9f2f84acc71e43e2780f
• https://git.kernel.org/stable/c/a830bdc82461353bf7b1f8a2ad2689bf5d2de444
• https://git.kernel.org/stable/c/4c21eec80cf502d9ea18e0b946246b2376452786
• https://git.kernel.org/stable/c/ad2637c46ef8b8ae0894372a2d39fdfcdc420a1e
• https://git.kernel.org/stable/c/c38d16b1ffac385c9e4b38447cd5c46af1114b58
• https://git.kernel.org/stable/c/402f13ec95945f34a210b28df1f8740d3d4a58c5
• https://git.kernel.org/stable/c/ef61d628dfad38fead1fd2e08979ae9126d011d5