PT-2026-64663 · Linux · Linux

CVE-2026-64442 · Published 2026-07-25 · Updated 2026-07-25

Mitre

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.

Related Identifiers

CVE-2026-64442

Affected Products

Linux

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-64442 · Security Note
• https://git.kernel.org/stable/c/402f13ec95945f34a210b28df1f8740d3d4a58c5 · Note
• https://git.kernel.org/stable/c/a830bdc82461353bf7b1f8a2ad2689bf5d2de444 · Note
• https://git.kernel.org/stable/c/c38d16b1ffac385c9e4b38447cd5c46af1114b58 · Note
• https://git.kernel.org/stable/c/4c21eec80cf502d9ea18e0b946246b2376452786 · Note
• https://git.kernel.org/stable/c/605ebd94d0f469204f3c9f2f84acc71e43e2780f · Note
• https://git.kernel.org/stable/c/ef61d628dfad38fead1fd2e08979ae9126d011d5 · Note
• https://git.kernel.org/stable/c/ad2637c46ef8b8ae0894372a2d39fdfcdc420a1e · Note
• https://git.kernel.org/stable/c/bc881c9915c4468747d0ca5fd1abd7b313cfb0f4 · Note