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October 18, 2021
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.