CVE-2026-64444

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

State
Published
Severity
8.1 High
Published
Jul 25, 2026
Updated
Oct 30, 2026
Reserved
Jul 19, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.18.1 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HLinux

Weaknesses

Affected Products

ProductVersions
LinuxLinux
  • 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 3ae0577d3be9f1e2707cce4749da250054e25e3fAffected
  • 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 889ca6000ac7fa73457b041848fcb08e0d51b809Affected
  • 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 1a52a05471494546f955a58e8c170c0c796c52d5Affected
  • 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 0406d746574e875d8778552eb674fcfbf5330bfbAffected
  • 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 0970dd47726a57e52013594e9fbf667586eb3673Affected
  • 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 04f612dc03427e0b1ac80a2611b5ac0ba93ac446Affected
  • 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 7e7741c8315e4160aead00a60cdd6f81ab880717Affected
  • 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before f9654207e92283e0acac5d64fe5f8835383b5a23Affected
LinuxLinux
  • 4.12Affected
  • before 4.12Not affected
  • 5.10.273 through 5.10.*Not affected
  • 5.15.212 through 5.15.*Not affected
  • 6.1.178 through 6.1.*Not affected
  • 6.6.145 through 6.6.*Not affected
  • 6.12.96 through 6.12.*Not affected
  • 6.18.39 through 6.18.*Not affected
  • 7.1.4 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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