{"id":"CVE-2026-64443","revision":null,"records":[{"revision":"e34d476bcb0e46539ce187ac646491f2","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64443","aliases":[],"title":"staging: rtl8723bs: fix OOB read in update_beacon_info() IE loop","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix OOB read in update_beacon_info() IE loop\n\nThe IE parsing loop in update_beacon_info() advances by\n(pIE->length + 2) each iteration but only guards on i < len.\nWhen a malicious AP sends a Beacon whose last IE has only one byte\nremaining in the frame (the element_id byte lands at len-1), the loop\nreads pIE->length from 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 len, passing a truncated IE\nto 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 len.\n\nAlso replace i += (pIE->length + 2) with i += sizeof(*pIE) + pIE->length\nfor consistency with the sizeof(*pIE) guards added above.","state":0,"publishedAt":"2026-07-25T08:51:15.234+00:00","modifiedAt":"2026-10-19T20:38:29.673+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/staging/rtl8723bs/core/rtw_wlan_util.c\"\n ],\n \"versions\": [\n {\n \"version\": \"554c0a3abf216c991c5ebddcdb2c08689ecd290b\",\n \"lessThan\": \"5e8db4cff5b45c7c4edc8ae3f302027c3bb32b25\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"554c0a3abf216c991c5ebddcdb2c08689ecd290b\",\n \"lessThan\": \"6dd5e8c3011ebabf417257d7f07901a7c4311539\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"554c0a3abf216c991c5ebddcdb2c08689ecd290b\",\n \"lessThan\": \"9193c34f75fd9e1ea8a590d7cced464c3380dc29\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"554c0a3abf216c991c5ebddcdb2c08689ecd290b\",\n \"lessThan\": \"bd953d52d587d42365e399b96c52dbdb13032070\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"554c0a3abf216c991c5ebddcdb2c08689ecd290b\",\n \"lessThan\": \"69f174a0673b6b7a29b851adb60bc450cdc0ecc4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"554c0a3abf216c991c5ebddcdb2c08689ecd290b\",\n \"lessThan\": \"b5cc2f999927f69723ca53f1f2a3aa37dbeda907\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"554c0a3abf216c991c5ebddcdb2c08689ecd290b\",\n \"lessThan\": \"ed51de4a86e173c3b0ef78e039c2e49e08b11f16\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/staging/rtl8723bs/core/rtw_wlan_util.c\"\n ],\n \"versions\": [\n {\n \"version\": \"4.12\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.12\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.212\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.178\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.145\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.96\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.39\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1.4\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","score":8.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/5e8db4cff5b45c7c4edc8ae3f302027c3bb32b25","https://git.kernel.org/stable/c/6dd5e8c3011ebabf417257d7f07901a7c4311539","https://git.kernel.org/stable/c/9193c34f75fd9e1ea8a590d7cced464c3380dc29","https://git.kernel.org/stable/c/bd953d52d587d42365e399b96c52dbdb13032070","https://git.kernel.org/stable/c/69f174a0673b6b7a29b851adb60bc450cdc0ecc4","https://git.kernel.org/stable/c/b5cc2f999927f69723ca53f1f2a3aa37dbeda907","https://git.kernel.org/stable/c/ed51de4a86e173c3b0ef78e039c2e49e08b11f16"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64443","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64443","identifiers":["CVE-2026-64443"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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