CVE-2026-64442 (GCVE-0-2026-64442)
Vulnerability from cvelistv5 – Published: 2026-07-25 08:51 – Updated: 2026-07-27 05:01
VLAI
EPSS
VEX
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)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| 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) |
|
| 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-rc3 , ≤ * (original_commit_for_fix) |
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{
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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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"datePublished": "2026-07-25T08:51:14.535Z",
"dateReserved": "2026-07-19T15:36:31.788Z",
"dateUpdated": "2026-07-27T05:01:04.117Z",
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"date": "2026-07-26",
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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. 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"suse_vex": {
"aggregate_severity": "not set",
"current_release_date": "2026-07-25T15:59:16Z",
"cve": "CVE-2026-64442",
"id": "CVE-2026-64442",
"initial_release_date": "2026-07-25T15:59:16Z",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-64442",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64442.json",
"version": "2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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