AUGUST 4, 2026
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Case File

CVE-2021-47602

MEDIUM · CVSS 5.5 EPSS 0.22%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2024-06-19 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.5. It affects Linux.

CVE
CVE-2021-47602
Severity
MEDIUM
CVSS
5.5
EPSS
0.22%
Linux

Original NVD Description

In the Linux kernel, the following vulnerability has been resolved: mac80211: track only QoS data frames for admission control For admission control, obviously all of that only works for QoS data frames, otherwise we cannot even access the QoS field in the header. Syzbot reported (see below) an uninitialized value here due to a status of a non-QoS nullfunc packet, which isn't even long enough to contain the QoS header. Fix this to only do anything for QoS data packets.

Related CVEs

Other vulnerabilities affecting the same vendor(s)