CVE-2026-64442 (GCVE-0-2026-64442)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:51 – Updated: 2026-10-19 20:38
VLAI
Title
staging: rtl8723bs: fix OOB reads in IE loops in issue_assocreq() and join_cmd_hdl()
Summary
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.
Severity
8.1 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 15:40 UTC
CWE
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7056 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < bc881c9915c4468747d0ca5fd1abd7b313cfb0f4 (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 605ebd94d0f469204f3c9f2f84acc71e43e2780f (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < a830bdc82461353bf7b1f8a2ad2689bf5d2de444 (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 4c21eec80cf502d9ea18e0b946246b2376452786 (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < ad2637c46ef8b8ae0894372a2d39fdfcdc420a1e (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < c38d16b1ffac385c9e4b38447cd5c46af1114b58 (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 402f13ec95945f34a210b28df1f8740d3d4a58c5 (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < ef61d628dfad38fead1fd2e08979ae9126d011d5 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.12
Unaffected: 0 , < 4.12 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.96 , ≤ 6.12.* (semver)
Unaffected: 6.18.39 , ≤ 6.18.* (semver)
Unaffected: 7.1.4 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix OOB reads in IE loops in issue_assocreq() and join_cmd_hdl()\n\nTwo IE parsing loops are missing the header bounds checks before they\ndereference pIE-\u003elength:\n\n - issue_assocreq() walks pmlmeinfo-\u003enetwork.ies to build the\n   association request. If the stored IE data ends with only an\n   element_id byte and no length byte, pIE-\u003elength is read one byte\n   past the end of the buffer.\n\n - join_cmd_hdl() walks pnetwork-\u003eies during station join and has\n   the same problem under the same conditions.\n\nBoth buffers are filled from AP beacon and probe-response frames, so a\nmalicious AP that sends a truncated final IE can trigger the issue.\n\nApply the two-guard pattern established in update_beacon_info():\n  1. Break if fewer than sizeof(*pIE) bytes remain.\n  2. Break if the IE\u0027s declared data extends past the buffer end."
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}



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