{"id":"CVE-2026-64445","revision":null,"records":[{"revision":"b44536266c3344058768cf059cac4e11","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64445","aliases":[],"title":"staging: rtl8723bs: fix WEP length underflow and OOB read in OnAuth()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix WEP length underflow and OOB read in OnAuth()\n\nOnAuth() has two bugs in the shared-key authentication path.\n\nWhen the Privacy bit is set, rtw_wep_decrypt() is called without\nverifying that the frame is long enough to contain a valid WEP IV and\nICV. Inside rtw_wep_decrypt(), length is computed as:\n\n length = len - WLAN_HDR_A3_LEN - iv_len\n\nand then passed as (length - 4) to crc32_le(). If len is less than\nWLAN_HDR_A3_LEN + iv_len + icv_len (32 bytes), length - 4 is negative\nand, after the implicit cast to size_t, causes crc32_le() to read far\nbeyond the frame buffer. Add a minimum length check before accessing\nthe IV field and calling the decryption path.\n\nWhen processing a seq=3 response, rtw_get_ie() stores the Challenge\nText IE length in ie_len, but the subsequent memcmp() always reads 128\nbytes regardless of ie_len. IEEE 802.11 mandates a challenge text of\nexactly 128 bytes; reject any IE whose length field differs, matching\nthe check already applied to OnAuthClient().","state":0,"publishedAt":"2026-07-25T08:51:16.67+00:00","modifiedAt":"2026-10-19T20:38:29.983+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_mlme_ext.c\"\n ],\n \"versions\": [\n {\n \"version\": \"554c0a3abf216c991c5ebddcdb2c08689ecd290b\",\n \"lessThan\": \"665e1ecb68b4e8419604e70a33f02d1c8b0222c6\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"554c0a3abf216c991c5ebddcdb2c08689ecd290b\",\n \"lessThan\": \"87cccc2a767f17dcab71e3b9fe5ae29b5516c5ce\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"554c0a3abf216c991c5ebddcdb2c08689ecd290b\",\n \"lessThan\": \"c9000c93078e5c0a5a651b077c0ec92a4bc7d580\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"554c0a3abf216c991c5ebddcdb2c08689ecd290b\",\n \"lessThan\": \"1f6c9d255bdda41216b6e34c96aa2b1abee0bb84\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"554c0a3abf216c991c5ebddcdb2c08689ecd290b\",\n \"lessThan\": \"3e44a7665f3abd320a80d9c64ee4a93317041b8b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"554c0a3abf216c991c5ebddcdb2c08689ecd290b\",\n \"lessThan\": \"64ec4192d9c10e96922245d4a6747304cc76b19d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"554c0a3abf216c991c5ebddcdb2c08689ecd290b\",\n \"lessThan\": \"d90b9f39f375c9826ef145605dfe97765d0ecb91\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"554c0a3abf216c991c5ebddcdb2c08689ecd290b\",\n \"lessThan\": \"a1fc19d61f661d47204f095b593de507884849f7\",\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_mlme_ext.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\": \"5.10.261\",\n \"lessThanOrEqual\": \"5.10.*\",\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:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/665e1ecb68b4e8419604e70a33f02d1c8b0222c6","https://git.kernel.org/stable/c/87cccc2a767f17dcab71e3b9fe5ae29b5516c5ce","https://git.kernel.org/stable/c/c9000c93078e5c0a5a651b077c0ec92a4bc7d580","https://git.kernel.org/stable/c/1f6c9d255bdda41216b6e34c96aa2b1abee0bb84","https://git.kernel.org/stable/c/3e44a7665f3abd320a80d9c64ee4a93317041b8b","https://git.kernel.org/stable/c/64ec4192d9c10e96922245d4a6747304cc76b19d","https://git.kernel.org/stable/c/d90b9f39f375c9826ef145605dfe97765d0ecb91","https://git.kernel.org/stable/c/a1fc19d61f661d47204f095b593de507884849f7"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64445","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64445","identifiers":["CVE-2026-64445"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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