{"id":"CVE-2026-93806","summary":"wifi: cfg80211: validate assoc response length before status and IE access","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: validate assoc response length before status and IE access\n\ncfg80211_rx_assoc_resp() initialises the status and response-IE fields\nof cfg80211_connect_resp_params from the management frame before\nproving that the frame is long enough for those offsets. S1G and\nregular association responses also have different IE offsets, but the\nS1G path only patched resp_ie after the unsafe initialiser had already\nrun.\n\nDefer resp_ie, resp_ie_len, and status to after the link-iteration\nloop. Use a bool to remember whether the frame is S1G, then validate\nthe appropriate minimum length and set all three fields in a single\nif/else block. Funnel short-frame and SME-reject cleanup through a\nshared free_bss label for the abandon paths.","modified":"2026-09-26T03:48:26.820492199Z","published":"2026-09-24T16:02:40.159Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93806.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/78ac450ad4624d6b2999cb4eeb28916767f81247"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a57310600c1e2b9ada0f37c96e8f48aef47d3093"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b760113aeca2e9362d56bf9e9263373ffe6c8eb3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93806.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93806"},{"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":"6829c878ecd24ff0ae41b4668c7e9d0f11b66942"},{"fixed":"a57310600c1e2b9ada0f37c96e8f48aef47d3093"},{"fixed":"78ac450ad4624d6b2999cb4eeb28916767f81247"},{"fixed":"b760113aeca2e9362d56bf9e9263373ffe6c8eb3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93806.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.32"},{"fixed":"6.12.111"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.53"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93806.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}