{"cve":"CVE-2026-98887","nvd":{"published":"2026-10-23T12:18:22.460","modified":"2026-10-26T07:17:13.743","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO\n\nhwsim_tx_info_frame_received_nl() casts the HWSIM_ATTR_TX_INFO payload\nto a struct hwsim_tx_rate * and unconditionally reads\nIEEE80211_TX_MAX_RATES entries (8 bytes) from it. The policy only bounds\nthe attribute from above (NLA_BINARY .len is a maximum) and the op sets\nGENL_DONT_VALIDATE_STRICT, so a short or zero-length attribute is\naccepted and the loop reads past the payload.\n\nRequire the exact length in the policy, so a malformed attribute is\nrejected before the handler runs.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7","https://git.kernel.org/stable/c/1ae85bb34fe3510659b86d6a5f8036dd498233f8","https://git.kernel.org/stable/c/3a96bb65b4b820d8b41fa155781ec1c29e3479d4","https://git.kernel.org/stable/c/3dc723ac78a6e4fa0fd49e27e487ed319da40a9f","https://git.kernel.org/stable/c/59e1f2a0242232b4a3af144ae317d3913fc09046"],"products":[],"source":"nvd","synced_at":"2026-10-26T07:33:01.631659812+00:00"},"epss":{"cve":"CVE-2026-98887","score":0.00213,"percentile":0.11498,"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."]}