CVE-2026-64444

staging: rtl8723bs: fix OOB read in OnAssocRsp() IE loop

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 read in OnAssocRsp() IE loop The IE parsing loop in OnAssocRsp() advances by (pIE->length + 2) each iteration but only guards on i < pkt_len. When a malicious AP sends an AssocResponse whose last IE has only one byte remaining in the frame (the element_id byte lands at pkt_len-1), the loop reads pIE->length from pframe[pkt_len], which is one byte past the allocated receive buffer. Additionally, even when the header bytes are in bounds, pIE->length itself can extend the data window beyond pkt_len, silently passing a truncated IE to the handler functions. Add two guards at the top of the loop body: 1. Break if fewer than sizeof(*pIE) bytes remain (can't read header). 2. Break if the IE's declared data extends past pkt_len.

Affected

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

4.12 ≤ 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 0406d746574e875d8778552eb674fcfbf5330bfb (fixed)
Vendor states this is fixed in 04f612dc03427e0b1ac80a2611b5ac0ba93ac446 (fixed)
Vendor states this is fixed in 0970dd47726a57e52013594e9fbf667586eb3673 (fixed)
Vendor states this is fixed in 1a52a05471494546f955a58e8c170c0c796c52d5 (fixed)
Vendor states this is fixed in 7e7741c8315e4160aead00a60cdd6f81ab880717 (fixed)
Vendor states this is fixed in 889ca6000ac7fa73457b041848fcb08e0d51b809 (fixed)
Vendor states this is fixed in f9654207e92283e0acac5d64fe5f8835383b5a23 (fixed)
Vendor states this is fixed in 4.12 (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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