Bug#1125752: glib2.0: CVE-2026-0988: Integer overflow in g_buffered_input_stream_peek() leads to segmentation fault

[Salvatore Bonaccorso]

Source: glib2.0
Version: 2.86.3-4
Severity: important
Tags: security upstream
Forwarded: https://gitlab.gnome.org/GNOME/glib/-/issues/3851
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>
Control: fixed -1 2.87.1-1 

Hi,

The following vulnerability was published for glib2.0.

CVE-2026-0988[0]:
| Integer overflow in g_buffered_input_stream_peek() leads to
| segmentation fault


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-2026-0988
    https://www.cve.org/CVERecord?id=CVE-2026-0988
[1] https://gitlab.gnome.org/GNOME/glib/-/issues/3851
[2] https://gitlab.gnome.org/GNOME/glib/-/commit/c5766cff61ffce0b8e787eae09908ac348338e5f

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore