Vulnerability in Linux
CVE-2021-47602
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.
EPSS: 0.002 (13.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Linux — versions 02219b3abca59fca81711bfe7ee78df7abad97ce, 3.19, 0
- Linux Linux_kernel — versions 5.16
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2021-47602?
- CVE-2021-47602 is a medium-severity vulnerability in Linux, classified under Access of Uninitialized Pointer. CVSS score: 5.5/10. Published 2024-06-19.
- How severe is CVE-2021-47602?
- Medium severity. CVSS v3 base score is 5.5 out of 10.