cvedb.io
CVE-2021-4083
HIGH · CVSS 7
EPSS exploitation probability: 0%
Published 2022-01-18T17:15:09.403 · Last modified 2026-06-17T04:19:00.623

Summary

A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on the system. This flaw affects Linux kernel versions prior to 5.16-rc4.

Affected products

linux — linux_kernel

Does this affect you?

Add your gear to cvedb and we'll alert you only when linux ships something exploited.

Check my exposure →

References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.