An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, would perform unbounded read operations on user-controlled ~/.pam_environment files, allowing an infinite loop if /dev/zero is symlinked to this location.
A denial-of-service issue was addressed with improved input validation. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26 and iPadOS 26. An unprivileged process may be able to terminate a root processes.
Improper input validation in some Intel(R) CBI software before version 1.1.0 may allow an authenticated user to potentially enable denial of service via local access.