cvedb.io
CVE-2021-4203
MEDIUM · CVSS 6.8
EPSS exploitation probability: 0%
Published 2022-03-25T19:15:09.833 · Last modified 2026-06-17T04:19:12.783

Summary

A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.

Affected products

linux — linux_kernel

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References

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