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From: Salvatore Bonaccorso <carnil@debian.org>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: glib2.0: CVE-2026-15588
Message-ID: <178509579732.122857.4437287805386620172.reportbug@eldamar.lan>
X-Mailer: reportbug 13.2.0+nmu1
Date: Sun, 26 Jul 2026 21:56:37 +0200
Delivered-To: submit@bugs.debian.org

Source: glib2.0
Version: 2.88.2-1
Severity: important
Tags: security upstream
Forwarded: https://gitlab.gnome.org/GNOME/glib/-/issues/3985
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for glib2.0.

CVE-2026-15588[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-15588
    https://www.cve.org/CVERecord?id=CVE-2026-15588
[1] https://gitlab.gnome.org/GNOME/glib/-/issues/3985
[2] https://gitlab.gnome.org/GNOME/glib/-/commit/4235f7b42ba51d6fdb4abd7c4276031802f39834

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore
]