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Rewterz Threat Advisory – CVE-2021-3847 – Linux Kernel Vulnerability

Severity

High

Analysis Summary

CVE-2021-3847 

Linux Kernel could allow a locally authenticated attacker to gain elevated privileges on the system, caused by a flaw in the OverlayFS. By sending a specially-crafted request using the copy_up function, an authenticated attacker could exploit this vulnerability to gain elevated privileges as root.

Impact

  • Privilege Escalation

Affected Vendors

  • Linux

Affected Products

  • Linux Kernel

Remediation

Upgrade to the latest version of Linux Kernel, available from the Linux Kernel Web site.

https://www.kernel.org/