{"cve":"CVE-2021-47251","nvd":{"published":"2024-05-21T15:15:14.007","modified":"2026-06-17T04:17:01.033","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmac80211: fix skb length check in ieee80211_scan_rx()\n\nReplace hard-coded compile-time constants for header length check\nwith dynamic determination based on the frame type. Otherwise, we\nhit a validation WARN_ON in cfg80211 later.\n\n[style fixes, reword commit message]","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-1284"],"references":["https://git.kernel.org/stable/c/5a1cd67a801cf5ef989c4783e07b86a25b143126","https://git.kernel.org/stable/c/d1b949c70206178b12027f66edc088d40375b5cb","https://git.kernel.org/stable/c/e298aa358f0ca658406d524b6639fe389cb6e11e","https://git.kernel.org/stable/c/5a1cd67a801cf5ef989c4783e07b86a25b143126","https://git.kernel.org/stable/c/d1b949c70206178b12027f66edc088d40375b5cb"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:50:30.954589733+00:00"},"epss":{"cve":"CVE-2021-47251","score":0.00231,"percentile":0.13988,"date":"2026-10-31"},"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."]}