CVE-2021-3655: Debian Linux

Low severity, CVSS 3.3. EPSS: 0.3% chance of exploitation in the next 30 days.

A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory.

Affected products

• Debian Debian Linux: version 9.0 only
• Linux Linux Kernel: before 5.14 (fixed in 5.14); version 5.14 only
• Red Hat Enterprise Linux: version 8.0 only

Published 2021-08-05. Last modified 2026-10-08.