CVE-2021-43267: Fedoraproject Fedora

Critical severity, CVSS 9.8. EPSS: 57.9% chance of exploitation in the next 30 days.

An issue was discovered in net/tipc/crypto.c in the Linux kernel before 5.14.16. The Transparent Inter-Process Communication (TIPC) functionality allows remote attackers to exploit insufficient validation of user-supplied sizes for the MSG_CRYPTO message type.

Affected products

• Fedoraproject Fedora: version 34 only; version 35 only
• Linux Linux Kernel: from 5.10, before 5.10.77 (fixed in 5.10.77); from 5.11, before 5.14.16 (fixed in 5.14.16)
• Netapp h300e Firmware: affected versions not specified
• Netapp h300s Firmware: affected versions not specified
• Netapp h410s Firmware: affected versions not specified
• Netapp h500e Firmware: affected versions not specified
• Netapp h500s Firmware: affected versions not specified
• Netapp h700e Firmware: affected versions not specified
• Netapp h700s Firmware: affected versions not specified

Published 2021-11-02. Last modified 2026-06-17.