{"cve":"CVE-2026-68197","nvd":{"published":"2026-08-10T13:20:07.150","modified":"2026-08-19T17:20:35.977","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: fix NULL dereference when the AP has HT-cap but no HT-oper\n\nmwifiex_tdls_add_ht_oper() gates its follow-the-AP-bandwidth path on\nbss_desc->bcn_ht_cap being present, but then dereferences a different\npointer, bss_desc->bcn_ht_oper:\n\n\tif (ISSUPP_CHANWIDTH40(priv->adapter->hw_dot_11n_dev_cap) &&\n\t    bss_desc->bcn_ht_cap &&\n\t    ISALLOWED_CHANWIDTH40(bss_desc->bcn_ht_oper->ht_param))\n\nbcn_ht_cap and bcn_ht_oper are populated independently while parsing the\nassociated AP's beacon in mwifiex_update_bss_desc_with_ie(): an AP that\nadvertises an HT Capabilities element but no HT Operation element leaves\nbcn_ht_cap non-NULL and bcn_ht_oper NULL. Setting up a TDLS link to a\npeer while associated to such an AP then dereferences the NULL\nbcn_ht_oper and crashes the kernel. Every other bcn_ht_oper user in the\ndriver NULL-checks it first.\n\nGuard on the pointer that is actually dereferenced.\n\nFound by 0sec automated security-research tooling (https://0sec.ai).","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/45011e4d9ba3f2182e5df64be65888044fa20771","https://git.kernel.org/stable/c/8c2058717fd06f05d421c2d3adf1dff3c3abcda1","https://git.kernel.org/stable/c/9375a4ea4121625ef27a46b74781cda66a5cc61b","https://git.kernel.org/stable/c/c3d68e294cbb6a4090bb219d3dcaca85a011809b","https://git.kernel.org/stable/c/cca4398aa305c22016d1714f388e2fa6ea4e5ad4"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:47:54.990491175+00:00"},"epss":{"cve":"CVE-2026-68197","score":0.00216,"percentile":0.12097,"date":"2026-11-01"},"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."]}