CVE-2020-7463: Apple iCloud

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

In FreeBSD 12.1-STABLE before r364644, 11.4-STABLE before r364651, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, improper handling in the kernel causes a use-after-free bug by sending large user messages from multiple threads on the same SCTP socket. The use-after-free situation may result in unintended kernel behaviour including a kernel panic.

Affected products

• Apple iCloud: before 12.3 (fixed in 12.3)
• Apple iPadOS: before 14.5 (fixed in 14.5)
• Apple iPhone OS: before 14.5 (fixed in 14.5)
• Apple iTunes: before 12.11.3 (fixed in 12.11.3)
• Apple macOS: from 11.0, before 11.3 (fixed in 11.3)
• Apple Safari: before 14.1 (fixed in 14.1)
• Apple tvOS: before 14.5 (fixed in 14.5)
• Apple watchOS: before 7.4 (fixed in 7.4)
• Freebsd Freebsd: version 11.3 only; version 11.4 only; version 12.1 only; version 12.2 only

Published 2021-03-26. Last modified 2026-06-17.