CVE-2020-14351: Debian Linux

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

A flaw was found in the Linux kernel. A use-after-free memory flaw was found in the perf subsystem allowing a local attacker with permission to monitor perf events to corrupt memory and possibly escalate privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Affected products

• Debian Debian Linux: version 9.0 only
• Linux Linux Kernel: before 5.8.17 (fixed in 5.8.17)
• Red Hat Enterprise Linux: version 7.0 only; version 8.0 only

Published 2020-12-03. Last modified 2026-06-17.