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staging: rtl8723bs: fix OOB reads in IE loops in issue_assocreq() and join_cmd_hdl()

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 products

Linux
  • <bc881c9915c4468747d0ca5fd1abd7b313cfb0f4
  • <402f13ec95945f34a210b28df1f8740d3d4a58c5
  • <605ebd94d0f469204f3c9f2f84acc71e43e2780f
  • =<6.18.*
  • <ef61d628dfad38fead1fd2e08979ae9126d011d5
  • =<6.12.*
  • =<7.1.*
  • <ad2637c46ef8b8ae0894372a2d39fdfcdc420a1e
  • <4c21eec80cf502d9ea18e0b946246b2376452786
  • <c38d16b1ffac385c9e4b38447cd5c46af1114b58
  • ==4.12
  • =<6.1.*
  • =<6.6.*
  • =<*
  • =<5.15.*
  • <a830bdc82461353bf7b1f8a2ad2689bf5d2de444
  • <4.12
  • =<5.10.*