CVE-2026-64444

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When a malicious AP sends an\nAssocResponse whose last IE has only one byte remaining in the frame\n(the element_id byte lands at pkt_len-1), the loop reads pIE->length\nfrom pframe[pkt_len], which is one byte past the allocated receive buffer.\n\nAdditionally, even when the header bytes are in bounds, pIE->length\nitself can extend the data window beyond pkt_len, silently passing a\ntruncated IE to the handler functions.\n\nAdd two guards at the top of the loop body:\n 1. Break if fewer than sizeof(*pIE) bytes remain (can't read header).\n 2. Break if the IE's declared data extends past pkt_len."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "baseScore": 8.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:A - An attacker within WiFi radio range can inject a spoofed 802.11 association response to an RTL8723BS station. WiFi management-frame injection is an adjacent attack vector.\nAC:L - The malformed final IE or oversized declared IE deterministically triggers the faulty parsing, and the attacker can observe and answer an association request. No race or condition outside attacker control is required.\nPR:N - Association responses are processed before WPA or 802.1X key establishment, without credentials or capabilities. The path checks the destination and association state but does not validate the response source or BSSID.\nUI:N - Auto-connecting phones, embedded devices, and IoT systems associate or reassociate without human action. An attacker can wait for or induce an automatic reconnect.\nS:U - The vulnerable driver and affected kernel resources belong to the same security authority. No VM, sandbox, or IOMMU boundary is crossed.\nC:H - Truncated HT or WMM elements can make handlers consume up to approximately 26 bytes beyond the logical receive frame from adjacent kernel skb memory. Under the required conservative treatment of a nontrivial out-of-bounds read, confidentiality impact is High.\nI:N - This flaw performs out-of-bounds reads but provides no out-of-bounds write or control-flow primitive. The separate HT capability overwrite was already fixed in the upstream parent and is not attributed to this CVE.\nA:H - Out-of-bounds accesses in the kernel receive tasklet can produce an oops or panic on hardened or unfavorable memory layouts. An unauthenticated adjacent attacker can repeat the trigger during association or reassociation."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/staging/rtl8723bs/core/rtw_mlme_ext.c"], "versions": [{"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "3ae0577d3be9f1e2707cce4749da250054e25e3f", "status": "affected", "versionType": "git"}, {"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "889ca6000ac7fa73457b041848fcb08e0d51b809", "status": "affected", "versionType": "git"}, {"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "1a52a05471494546f955a58e8c170c0c796c52d5", "status": "affected", "versionType": "git"}, {"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "0406d746574e875d8778552eb674fcfbf5330bfb", "status": "affected", "versionType": "git"}, {"version": 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"CVE-2026-64444", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T15:40:56.161373Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T20:38:29.828Z"}}]}}

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WiFi management-frame injection is an adjacent attack vector.\nAC:L - The malformed final IE or oversized declared IE deterministically triggers the faulty parsing, and the attacker can observe and answer an association request. No race or condition outside attacker control is required.\nPR:N - Association responses are processed before WPA or 802.1X key establishment, without credentials or capabilities. The path checks the destination and association state but does not validate the response source or BSSID.\nUI:N - Auto-connecting phones, embedded devices, and IoT systems associate or reassociate without human action. An attacker can wait for or induce an automatic reconnect.\nS:U - The vulnerable driver and affected kernel resources belong to the same security authority. No VM, sandbox, or IOMMU boundary is crossed.\nC:H - Truncated HT or WMM elements can make handlers consume up to approximately 26 bytes beyond the logical receive frame from adjacent kernel skb memory. Under the required conservative treatment of a nontrivial out-of-bounds read, confidentiality impact is High.\nI:N - This flaw performs out-of-bounds reads but provides no out-of-bounds write or control-flow primitive. The separate HT capability overwrite was already fixed in the upstream parent and is not attributed to this CVE.\nA:H - Out-of-bounds accesses in the kernel receive tasklet can produce an oops or panic on hardened or unfavorable memory layouts. An unauthenticated adjacent attacker can repeat the trigger during association or reassociation."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "3ae0577d3be9f1e2707cce4749da250054e25e3f", "versionType": "git"}, {"status": "affected", "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "889ca6000ac7fa73457b041848fcb08e0d51b809", "versionType": "git"}, {"status": "affected", "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "1a52a05471494546f955a58e8c170c0c796c52d5", "versionType": "git"}, {"status": "affected", "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "0406d746574e875d8778552eb674fcfbf5330bfb", "versionType": "git"}, {"status": "affected", "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "0970dd47726a57e52013594e9fbf667586eb3673", "versionType": "git"}, {"status": "affected", "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "04f612dc03427e0b1ac80a2611b5ac0ba93ac446", "versionType": "git"}, {"status": "affected", "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "7e7741c8315e4160aead00a60cdd6f81ab880717", "versionType": "git"}, {"status": "affected", "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "f9654207e92283e0acac5d64fe5f8835383b5a23", "versionType": "git"}], "programFiles": ["drivers/staging/rtl8723bs/core/rtw_mlme_ext.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.12"}, {"status": "unaffected", "version": "0", "lessThan": "4.12", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.273", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.212", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.178", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.145", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.96", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.39", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.4", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/staging/rtl8723bs/core/rtw_mlme_ext.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/3ae0577d3be9f1e2707cce4749da250054e25e3f"}, {"url": "https://git.kernel.org/stable/c/889ca6000ac7fa73457b041848fcb08e0d51b809"}, {"url": "https://git.kernel.org/stable/c/1a52a05471494546f955a58e8c170c0c796c52d5"}, {"url": "https://git.kernel.org/stable/c/0406d746574e875d8778552eb674fcfbf5330bfb"}, {"url": "https://git.kernel.org/stable/c/0970dd47726a57e52013594e9fbf667586eb3673"}, {"url": "https://git.kernel.org/stable/c/04f612dc03427e0b1ac80a2611b5ac0ba93ac446"}, {"url": "https://git.kernel.org/stable/c/7e7741c8315e4160aead00a60cdd6f81ab880717"}, {"url": "https://git.kernel.org/stable/c/f9654207e92283e0acac5d64fe5f8835383b5a23"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix OOB read in OnAssocRsp() IE loop\n\nThe IE parsing loop in OnAssocRsp() advances by (pIE->length + 2) each\niteration but only guards on i < pkt_len. When a malicious AP sends an\nAssocResponse whose last IE has only one byte remaining in the frame\n(the element_id byte lands at pkt_len-1), the loop reads pIE->length\nfrom pframe[pkt_len], which is one byte past the allocated receive buffer.\n\nAdditionally, even when the header bytes are in bounds, pIE->length\nitself can extend the data window beyond pkt_len, silently passing a\ntruncated IE to the handler functions.\n\nAdd two guards at the top of the loop body:\n 1. Break if fewer than sizeof(*pIE) bytes remain (can't read header).\n 2. 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When a malicious AP sends an\nAssocResponse whose last IE has only one byte remaining in the frame\n(the element_id byte lands at pkt_len-1), the loop reads pIE->length\nfrom pframe[pkt_len], which is one byte past the allocated receive buffer.\n\nAdditionally, even when the header bytes are in bounds, pIE->length\nitself can extend the data window beyond pkt_len, silently passing a\ntruncated IE to the handler functions.\n\nAdd two guards at the top of the loop body:\n 1. Break if fewer than sizeof(*pIE) bytes remain (can't read header).\n 2. Break if the IE's declared data extends past pkt_len."}], "id": "CVE-2026-64444", "lastModified": "2026-10-30T13:19:36.500", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-64444", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:40:56.161373Z", "version": "2.0.3"}}]}, "published": "2026-07-25T10:17:29.053", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0406d746574e875d8778552eb674fcfbf5330bfb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/04f612dc03427e0b1ac80a2611b5ac0ba93ac446"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0970dd47726a57e52013594e9fbf667586eb3673"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1a52a05471494546f955a58e8c170c0c796c52d5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3ae0577d3be9f1e2707cce4749da250054e25e3f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7e7741c8315e4160aead00a60cdd6f81ab880717"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/889ca6000ac7fa73457b041848fcb08e0d51b809"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f9654207e92283e0acac5d64fe5f8835383b5a23"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-125"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: staging: rtl8723bs: fix OOB read in OnAssocRsp() IE loop", "id": "2507120", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507120"}, "csaw": false, "cwe": "CWE-125", "details": ["A flaw was found in the Linux kernel's rtl8723bs Wi-Fi driver. A remote attacker, by operating a malicious Access Point (AP), could send a specially crafted association response frame. This could lead to an out-of-bounds read vulnerability, potentially causing information disclosure or system instability."], "name": "CVE-2026-64444", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64444\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64444\nhttps://lore.kernel.org/linux-cve-announce/2026072539-CVE-2026-64444-7194@gregkh/T"]}

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