CVE-2026-64442: In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB reads in IE loops in issue_assocreq() and join_cmd_hd...

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.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS Probability

0.29%

20.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

Vendor	Product	Versions
Linux	Linux	>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < bc881c9915c4468747d0ca5fd1abd7b313cfb0f4; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 605ebd94d0f469204f3c9f2f84acc71e43e2780f; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < a830bdc82461353bf7b1f8a2ad2689bf5d2de444; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 4c21eec80cf502d9ea18e0b946246b2376452786; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < ad2637c46ef8b8ae0894372a2d39fdfcdc420a1e; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < c38d16b1ffac385c9e4b38447cd5c46af1114b58; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 402f13ec95945f34a210b28df1f8740d3d4a58c5; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < ef61d628dfad38fead1fd2e08979ae9126d011d5
Linux	Linux	4.12

References

Timeline

Published: Jul 25, 2026
Last Modified: Aug 11, 2026
Status: Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-64442?

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.

How severe is CVE-2026-64442?

CVE-2026-64442 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.

How do I fix CVE-2026-64442?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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