{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-64442", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.788Z", "datePublished": "2026-07-25T08:51:14.535Z", "dateUpdated": "2026-08-17T04:55:44.254Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:55:44.254Z" }, "descriptions": [ { "lang": "en", "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->length:\n\n - issue_assocreq() walks pmlmeinfo->network.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->length is read one byte\n past the end of the buffer.\n\n - join_cmd_hdl() walks pnetwork->ies 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's declared data extends past the buffer end." } ], "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 - A malicious AP within WiFi radio range can supply crafted beacon or probe-response IEs that reach both vulnerable loops during connection.\nAC:L - The attacker directly controls the IE layout and declared lengths, and triggering requires no race or condition outside attacker control.\nPR:N - join_cmd_hdl() executes before authentication, while issue_assocreq() precedes WPA/802.1X credential verification; the rogue AP needs no valid credentials.\nUI:N - Devices can automatically reconnect to a rogue AP spoofing a saved SSID, so no contemporaneous victim action is required.\nS:U - The vulnerable parser and resulting impacts remain within the host kernel's existing security authority.\nC:H - A malicious length can cause reads of up to 255 bytes beyond the logical IE boundary, including kernel pointers or state, and issue_assocreq() can transmit those bytes to the attacking AP.\nI:N - The defect performs out-of-bounds reads and copies into legitimate destinations, without providing an out-of-bounds or arbitrary write primitive.\nA:H - The malformed lengths drive unchecked kernel-context reads through multiple handlers and can cause an oops or kernel fault; an adjacent attacker can repeat the trigger during connection attempts." } ] } ], "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": "bc881c9915c4468747d0ca5fd1abd7b313cfb0f4", "status": "affected", "versionType": "git" }, { "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "605ebd94d0f469204f3c9f2f84acc71e43e2780f", "status": "affected", "versionType": "git" }, { "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "a830bdc82461353bf7b1f8a2ad2689bf5d2de444", "status": "affected", "versionType": "git" }, { "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "4c21eec80cf502d9ea18e0b946246b2376452786", "status": "affected", "versionType": "git" }, { "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "ad2637c46ef8b8ae0894372a2d39fdfcdc420a1e", "status": "affected", "versionType": "git" }, { "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "c38d16b1ffac385c9e4b38447cd5c46af1114b58", "status": "affected", "versionType": "git" }, { "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "402f13ec95945f34a210b28df1f8740d3d4a58c5", "status": "affected", "versionType": "git" }, { "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "ef61d628dfad38fead1fd2e08979ae9126d011d5", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/staging/rtl8723bs/core/rtw_mlme_ext.c" ], "versions": [ { "version": "4.12", "status": "affected" }, { "version": "0", "lessThan": "4.12", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.96", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "5.10.261" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "5.15.212" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.1.178" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.6.145" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.12.96" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.18.39" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "7.1.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/bc881c9915c4468747d0ca5fd1abd7b313cfb0f4" }, { "url": "https://git.kernel.org/stable/c/605ebd94d0f469204f3c9f2f84acc71e43e2780f" }, { "url": "https://git.kernel.org/stable/c/a830bdc82461353bf7b1f8a2ad2689bf5d2de444" }, { "url": "https://git.kernel.org/stable/c/4c21eec80cf502d9ea18e0b946246b2376452786" }, { "url": "https://git.kernel.org/stable/c/ad2637c46ef8b8ae0894372a2d39fdfcdc420a1e" }, { "url": "https://git.kernel.org/stable/c/c38d16b1ffac385c9e4b38447cd5c46af1114b58" }, { "url": "https://git.kernel.org/stable/c/402f13ec95945f34a210b28df1f8740d3d4a58c5" }, { "url": "https://git.kernel.org/stable/c/ef61d628dfad38fead1fd2e08979ae9126d011d5" } ], "title": "staging: rtl8723bs: fix OOB reads in IE loops in issue_assocreq() and join_cmd_hdl()", "x_generator": { "engine": "bippy-1.2.0" } } } }