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CVE-2021-4157

Description

An out of memory bounds write flaw (1 or 2 bytes of memory) in the Linux kernel NFS subsystem was found in the way users use mirroring (replication of files with NFS). A user, having access to the NFS mount, could potentially use this flaw to crash the system or escalate privileges on the system.

POC

Reference

- https://www.oracle.com/security-alerts/cpujul2022.html

Github

- https://github.com/ARPSyndicate/cvemon