{"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"}}}}