{"cve":"CVE-2026-98422","nvd":{"published":"2026-10-14T14:17:53.737","modified":"2026-10-19T10:18:47.790","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: reset the AP_VLAN tailroom counter on ifdown\n\nOn ifup, AP_VLAN interfaces get crypto_tx_tailroom_needed_cnt from\nthe AP interface, but it's never decremented again unless the AP is\nalso brought down. Thus, bringing the same AP_VLAN up again will\nincrement the counter again and eventually hit the sanity check:\n\n  WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt !=\n               master->crypto_tx_tailroom_needed_cnt);\n\nReset it on ifdown to avoid that.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/304a874670a0b6ab5589a7f60b4af0251797b121","https://git.kernel.org/stable/c/3d76b45e8432c0d75fcb9e90d92eaa3176898adf","https://git.kernel.org/stable/c/4504f3960dc4501c73be9f99eabda2e26e9db41e","https://git.kernel.org/stable/c/4b54d01b48445b66c9e576de92b90a3a3ae7b34a","https://git.kernel.org/stable/c/7775759e3cb35ef5a571b2d877c2a9b70a5d5f08"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:59:28.494260111+00:00"},"epss":{"cve":"CVE-2026-98422","score":0.0022,"percentile":0.12421,"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."]}