{"cve":"CVE-2026-98709","nvd":{"published":"2026-10-18T16:17:24.437","modified":"2026-10-21T13:21:39.320","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: count only matching reservations in reserved switch\n\nieee80211_vif_use_reserved_switch() validates a replacement by counting\nassigned links on ctx->replace_ctx and treating reservations too\nbroadly. A link can still be assigned to the old channel context while\nholding a reservation that belongs to a different replacement\noperation.\n\nThat can make the current replacement appear complete too early. If\nanother link finalizes first, the function can free the\nWILL_BE_REPLACED chanctx while the unmatched link and driver still use\nit, leading to a use-after-free in later beacon generation.\n\nRequire an in-place reservation to point at the current replacement\ncontext, and require the reserved and assigned contexts to be the\nmatching replacement pair, before counting or moving the link.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/03525b632908b049f4d04cc8a71cdff2329589cf","https://git.kernel.org/stable/c/437f3727b4fd715266c296435c116288f82666fd","https://git.kernel.org/stable/c/4ae6ed5b6074df5f3da05fd74c40bb24c5c9b41d","https://git.kernel.org/stable/c/5cc54a000960bc88f8c58940164dca0e601ab39c","https://git.kernel.org/stable/c/d31f655e44631891788ca67018ec5e1ed1c7de86"],"products":[],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-98709","score":0.00168,"percentile":0.05986,"date":"2026-10-25"},"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."]}