Description
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.
References10
- access.redhat.com/errata/RHSA-2026:39985
- access.redhat.com/errata/RHSA-2026:40485
- access.redhat.com/errata/RHSA-2026:42329
- access.redhat.com/errata/RHSA-2026:55440
- access.redhat.com/errata/RHSA-2026:57015
- access.redhat.com/errata/RHSA-2026:58981
- access.redhat.com/errata/RHSA-2026:61766
- access.redhat.com/errata/RHSA-2026:61783
- access.redhat.com/errata/RHSA-2026:63135
- access.redhat.com/errata/RHSA-2026:63138
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L - EPSS — exploit probability
- 1% percentile: 48 · as of 14 November 2026
- CWE
- CWE-770
Could this be exploited in your environment?
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