{"id":"CVE-2026-64442","summary":"staging: rtl8723bs: fix OOB reads in IE loops in issue_assocreq() and join_cmd_hdl()","details":"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's declared data extends past the buffer end.","modified":"2026-07-28T04:03:07.231776800Z","published":"2026-07-25T08:51:14.535Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64442.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/402f13ec95945f34a210b28df1f8740d3d4a58c5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4c21eec80cf502d9ea18e0b946246b2376452786"},{"type":"WEB","url":"https://git.kernel.org/stable/c/605ebd94d0f469204f3c9f2f84acc71e43e2780f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a830bdc82461353bf7b1f8a2ad2689bf5d2de444"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ad2637c46ef8b8ae0894372a2d39fdfcdc420a1e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bc881c9915c4468747d0ca5fd1abd7b313cfb0f4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c38d16b1ffac385c9e4b38447cd5c46af1114b58"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ef61d628dfad38fead1fd2e08979ae9126d011d5"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64442.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64442"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"554c0a3abf216c991c5ebddcdb2c08689ecd290b"},{"fixed":"bc881c9915c4468747d0ca5fd1abd7b313cfb0f4"},{"fixed":"605ebd94d0f469204f3c9f2f84acc71e43e2780f"},{"fixed":"a830bdc82461353bf7b1f8a2ad2689bf5d2de444"},{"fixed":"4c21eec80cf502d9ea18e0b946246b2376452786"},{"fixed":"ad2637c46ef8b8ae0894372a2d39fdfcdc420a1e"},{"fixed":"c38d16b1ffac385c9e4b38447cd5c46af1114b58"},{"fixed":"402f13ec95945f34a210b28df1f8740d3d4a58c5"},{"fixed":"ef61d628dfad38fead1fd2e08979ae9126d011d5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64442.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.12.0"},{"fixed":"5.10.261"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.212"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.178"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.145"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.96"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.39"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64442.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"}]}