{"cve":"CVE-2021-47602","nvd":{"published":"2024-06-19T15:15:54.760","modified":"2026-06-17T04:18:08.487","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmac80211: track only QoS data frames for admission control\n\nFor admission control, obviously all of that only works for\nQoS data frames, otherwise we cannot even access the QoS\nfield in the header.\n\nSyzbot reported (see below) an uninitialized value here due\nto a status of a non-QoS nullfunc packet, which isn't even\nlong enough to contain the QoS header.\n\nFix this to only do anything for QoS data packets.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-824"],"references":["https://git.kernel.org/stable/c/42d08e97b196479f593499e887a9ab81446a34b9","https://git.kernel.org/stable/c/46b9e29db2012a4d2a40a26101862e002ccf387b","https://git.kernel.org/stable/c/69f054d6642c8f6173724ce17e7ee3ff66b8f682","https://git.kernel.org/stable/c/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981a","https://git.kernel.org/stable/c/eed897a22230e3231a740eddd7d6d95ba476625f"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:52:00.836172422+00:00"},"epss":{"cve":"CVE-2021-47602","score":0.00222,"percentile":0.12887,"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."]}