CVE-2026-64442

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < bc881c9915c4468747d0ca5fd1abd7b313cfb0f4affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 605ebd94d0f469204f3c9f2f84acc71e43e2780faffected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < a830bdc82461353bf7b1f8a2ad2689bf5d2de444affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 4c21eec80cf502d9ea18e0b946246b2376452786affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < ad2637c46ef8b8ae0894372a2d39fdfcdc420a1eaffected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < c38d16b1ffac385c9e4b38447cd5c46af1114b58affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 402f13ec95945f34a210b28df1f8740d3d4a58c5affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < ef61d628dfad38fead1fd2e08979ae9126d011d5affected
LinuxLinux4.12affected
LinuxLinux0 < 4.12unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
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