{"api_version":"1","generated_at":"2026-08-02T03:37:03+00:00","cve":"CVE-2026-64445","urls":{"html":"https://cve.report/CVE-2026-64445","api":"https://cve.report/api/cve/CVE-2026-64445.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64445","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64445"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:29","updated_at":"2026-07-27 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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()."}],"metrics":[{"cvssV3_1":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-07-27T05:01:07.584Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/665e1ecb68b4e8419604e70a33f02d1c8b0222c6"},{"url":"https://git.kernel.org/stable/c/87cccc2a767f17dcab71e3b9fe5ae29b5516c5ce"},{"url":"https://git.kernel.org/stable/c/c9000c93078e5c0a5a651b077c0ec92a4bc7d580"},{"url":"https://git.kernel.org/stable/c/1f6c9d255bdda41216b6e34c96aa2b1abee0bb84"},{"url":"https://git.kernel.org/stable/c/3e44a7665f3abd320a80d9c64ee4a93317041b8b"},{"url":"https://git.kernel.org/stable/c/64ec4192d9c10e96922245d4a6747304cc76b19d"},{"url":"https://git.kernel.org/stable/c/d90b9f39f375c9826ef145605dfe97765d0ecb91"},{"url":"https://git.kernel.org/stable/c/a1fc19d61f661d47204f095b593de507884849f7"}],"title":"staging: rtl8723bs: fix WEP length underflow and OOB read in OnAuth()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64445","datePublished":"2026-07-25T08:51:16.670Z","dateReserved":"2026-07-19T15:36:31.788Z","dateUpdated":"2026-07-27T05:01:07.584Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:29","lastModifiedDate":"2026-07-27 05:16:51","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64445","Ordinal":"1","Title":"staging: rtl8723bs: fix WEP length underflow and OOB read in OnA","CVE":"CVE-2026-64445","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64445","Ordinal":"1","NoteData":"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().","Type":"Description","Title":"staging: rtl8723bs: fix WEP length underflow and OOB read in OnA"}]}}}