The API of xcb::Connection
has constructors which allow an arbitrary RawFd
to be used as a socket connection. On either failure of these constructors or on the drop of Connection
, it closes the associated file descriptor. Thus, a program which uses an OwnedFd
(such as a UnixStream
) as the file descriptor can close the file descriptor and continue to attempt using it or close an already-closed file descriptor, violating I/O safety.
Starting in version 1.6.0, xcb
provides Connection::connect_with_fd
and Connection::connect_with_fd_and_extensions
as safe alternatives and deprecates the problematic functions.
{ "github_reviewed": true, "nvd_published_at": null, "cwe_ids": [ "CWE-666", "CWE-672" ], "github_reviewed_at": "2025-08-22T17:34:45Z", "severity": "LOW" }