CVE-2021-4204: Debian Linux

High severity, CVSS 7.1. EPSS: 1.2% chance of exploitation in the next 30 days.

An out-of-bounds (OOB) memory access flaw was found in the Linux kernel's eBPF due to an Improper Input Validation. This flaw allows a local attacker with a special privilege to crash the system or leak internal information.

Affected products

• Debian Debian Linux: version 11.0 only
• Linux Linux Kernel: before 5.8.0 (fixed in 5.8.0); version 5.8.0 only
• Netapp h300s Firmware: affected versions not specified
• Netapp h410c Firmware: affected versions not specified
• Netapp h410s Firmware: affected versions not specified
• Netapp h500s Firmware: affected versions not specified
• Netapp h700s Firmware: affected versions not specified
• Red Hat Enterprise Linux: version 9.0 only

Published 2022-08-24. Last modified 2026-06-17.