CVE-2020-7463

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-03-26 · updated 2026-06-17
Weakness: CWE-416

Description

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 for Windows: 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 for Windows: 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: 11.3, 11.3-p1, 11.3-p10, 11.3-p11, 11.3-p12, 11.3-p2 (+20)

How to fix

Upgrade to a fixed version: Apple iCloud for Windows 12.3; Apple iPadOS 14.5; Apple Iphone Os 14.5; Apple iTunes for Windows 12.11.3; Apple macOS 11.3; Apple Safari 14.1; Apple tvOS 14.5; Apple watchOS 7.4. Check the vendor advisory for mitigations.

References

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