A denial-of-service and resource exhaustion vulnerability exists within the `GDBus` component of GLib. The `gdbusauth` authentication mechanism fails to enforce proper length limitations on data lines read from a client. An unauthenticated local or remote attacker can exploit this lack of input validation by sending excessively long streams of data, causing the application to consume massive amounts of system memory and CPU, potentially leading to a crash or system hang.
https://access.redhat.com/errata/RHSA-2026:72476
https://access.redhat.com/errata/RHSA-2026:72475
https://access.redhat.com/errata/RHSA-2026:72470
https://access.redhat.com/errata/RHSA-2026:72399
https://access.redhat.com/errata/RHSA-2026:72395
https://access.redhat.com/errata/RHSA-2026:72394
https://access.redhat.com/errata/RHSA-2026:66018
https://access.redhat.com/errata/RHSA-2026:65773
https://access.redhat.com/errata/RHSA-2026:65771
https://access.redhat.com/errata/RHSA-2026:65770
https://access.redhat.com/errata/RHSA-2026:65769
https://access.redhat.com/errata/RHSA-2026:65768
https://access.redhat.com/errata/RHSA-2026:65767
https://access.redhat.com/errata/RHSA-2026:65763
https://access.redhat.com/errata/RHSA-2026:65762
https://access.redhat.com/errata/RHSA-2026:63140
https://access.redhat.com/errata/RHSA-2026:63138
https://access.redhat.com/errata/RHSA-2026:63135
https://access.redhat.com/errata/RHSA-2026:61783
https://access.redhat.com/errata/RHSA-2026:61766
https://access.redhat.com/errata/RHSA-2026:58981
https://access.redhat.com/errata/RHSA-2026:57015
https://access.redhat.com/errata/RHSA-2026:55440
https://access.redhat.com/errata/RHSA-2026:42329