CVE-2026-64442

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

HIGH
8.1
CVSS Score
Published: July 25, 2026 at 08:51 AM UTC
Updated: October 19, 2026 at 09:17 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.1
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.12 ≤ v < 5.10.2615.11 ≤ v < 5.15.2125.16 ≤ v < 6.1.1786.13 ≤ v < 6.18.396.19 ≤ v < 7.1.46.2 ≤ v < 6.6.1456.7 ≤ v < 6.12.96554c0a3abf216c991c5ebddcdb2c08689ecd290b7.27.2 rc17.2 rc2
Vendor states this is fixed in 402f13ec95945f34a210b28df1f8740d3d4a58c5 (fixed)
Vendor states this is fixed in 4c21eec80cf502d9ea18e0b946246b2376452786 (fixed)
Vendor states this is fixed in 605ebd94d0f469204f3c9f2f84acc71e43e2780f (fixed)
Vendor states this is fixed in a830bdc82461353bf7b1f8a2ad2689bf5d2de444 (fixed)
Vendor states this is fixed in ad2637c46ef8b8ae0894372a2d39fdfcdc420a1e (fixed)
Vendor states this is fixed in bc881c9915c4468747d0ca5fd1abd7b313cfb0f4 (fixed)
Vendor states this is fixed in c38d16b1ffac385c9e4b38447cd5c46af1114b58 (fixed)
Vendor states this is fixed in ef61d628dfad38fead1fd2e08979ae9126d011d5 (fixed)
Vendor states this is fixed in 4.12 (unaffected)
Vendor states this is fixed in 5.10.261 (unaffected)
Vendor states this is fixed in 5.15.212 (unaffected)
Vendor states this is fixed in 6.1.178 (unaffected)
Vendor states this is fixed in 6.12.96 (unaffected)
Vendor states this is fixed in 6.18.39 (unaffected)
Vendor states this is fixed in 6.6.145 (unaffected)
Vendor states this is fixed in 7.1.4 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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