{"cve":"CVE-2026-68402","nvd":{"published":"2026-08-10T13:20:33.710","modified":"2026-10-19T22:17:17.573","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: bound element ID read when checking non-inheritance\n\ncfg80211_is_element_inherited() reads the first data octet of the\ncandidate element (id = elem->data[0]) to look it up in an extension\nnon-inheritance list. It does so after testing elem->id, but without\nverifying that the element actually has a data octet. A zero-length\nextension element (WLAN_EID_EXTENSION with length 0) therefore makes it\nread one octet past the end of the element.\n\n_ieee802_11_parse_elems_full() runs this check for every element of a\nframe once a non-inheritance context exists -- e.g. while parsing a\nper-STA profile of a Multi-Link element in a (re)association response,\nor a non-transmitted BSS profile -- so a crafted frame from an AP can\ntrigger a one-octet slab-out-of-bounds read during element parsing:\n\n  BUG: KASAN: slab-out-of-bounds in cfg80211_is_element_inherited\n  Read of size 1 ... in net/wireless/scan.c\n\nReturn early (treat the element as inherited) when an extension element\ncarries no data, mirroring the existing handling of empty ID lists.\n\nThe bug was found by fuzzing ieee802_11_parse_elems_full() under KASAN.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","score":7.1},"cwes":["CWE-125"],"references":["https://git.kernel.org/stable/c/11ac7a5e75f5132f1778e0c60981d30dc29fb869","https://git.kernel.org/stable/c/20c308d9a57722801961f816395bf825f7bde6bc","https://git.kernel.org/stable/c/24154c172246ae3f0e69bb17c9111095685ceedc","https://git.kernel.org/stable/c/2d31ebb26a14f103c9cdc5287fb20cb2d4bde901","https://git.kernel.org/stable/c/521dd5fe6d12b0d3c275f919738dc3a07117f4a5"],"products":[],"source":"nvd","synced_at":"2026-10-21T03:56:58.798400159+00:00"},"epss":{"cve":"CVE-2026-68402","score":0.00266,"percentile":0.1834,"date":"2026-10-26"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}