CVE-2026-64442

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

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

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 bc881c9915c4468747d0ca5fd1abd7b313cfb0f4Affected
  • 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 605ebd94d0f469204f3c9f2f84acc71e43e2780fAffected
  • 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before a830bdc82461353bf7b1f8a2ad2689bf5d2de444Affected
  • 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 4c21eec80cf502d9ea18e0b946246b2376452786Affected
  • 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before ad2637c46ef8b8ae0894372a2d39fdfcdc420a1eAffected
  • 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before c38d16b1ffac385c9e4b38447cd5c46af1114b58Affected
  • 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 402f13ec95945f34a210b28df1f8740d3d4a58c5Affected
  • 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before ef61d628dfad38fead1fd2e08979ae9126d011d5Affected
LinuxLinux
  • 4.12Affected
  • before 4.12Not affected
  • 5.10.261 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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