CVE-2026-58013 Glib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend"

A flaw was found in GLib. A buffer over-read can occur in giochannelreadlinebackend in the giochannel.c file when a custom line terminator with a length greater than one is set, causing memcmp to read past the GString buffer. This vulnerability can cause a minor information disclosure of 7 bytes ...