Vulnerability in Linux

CVE-2023-53321

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211_hwsim: drop short frames While technically some control frames like ACK are shorter and end after Address 1, such frames shouldn't be forwarded through wmediumd or similar userspace, so require the full 3-address header to avoid accessing invalid memory if shorter frames are passed in.

EPSS: 0.001 (3.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

Affected products

References

Frequently asked questions

What is CVE-2023-53321?
CVE-2023-53321 is a high-severity vulnerability in Linux. CVSS score: 7.1/10. Published 2025-09-16.
How severe is CVE-2023-53321?
High severity. CVSS v3 base score is 7.1 out of 10.