What is CVE-2021-47611?

CVE-2021-47611 is a high-severity vulnerability in Linux. CVSS score: 8.1/10. Published 2024-06-19.

How severe is CVE-2021-47611?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Linux

CVE-2021-47611

In the Linux kernel, the following vulnerability has been resolved: mac80211: validate extended element ID is present Before attempting to parse an extended element, verify that the extended element ID is present.

Published 2024-06-19 · last modified 2026-08-04.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (24.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Linux — versions 41cbb0f5a29592874355e4159489eb08337cd50e, 4.19, 0
Linux Kernel — versions 5.16

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2021-47611?: CVE-2021-47611 is a high-severity vulnerability in Linux. CVSS score: 8.1/10. Published 2024-06-19.
How severe is CVE-2021-47611?: High severity. CVSS v3 base score is 8.1 out of 10.