CVE-2026-0988

Name	CVE-2026-0988
Description	A flaw was found in glib. Missing validation of offset and count parameters in the g_buffered_input_stream_peek() function can lead to an integer overflow during length calculation. When specially crafted values are provided, this overflow results in an incorrect size being passed to memcpy(), triggering a buffer overflow. This can cause application crashes, leading to a Denial of Service (DoS).
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1125752

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
glib2.0 (PTS)	bullseye	2.66.8-1+deb11u4	vulnerable
	bullseye (security)	2.66.8-1+deb11u7	vulnerable
	bookworm	2.74.6-2+deb12u8	vulnerable
	bookworm (security)	2.74.6-2+deb12u2	vulnerable
	trixie	2.84.4-3~deb13u2	vulnerable
	forky, sid	2.86.3-5	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
glib2.0	source	experimental	2.87.1-1
glib2.0	source	(unstable)	2.86.3-5			1125752

Notes

[trixie] - glib2.0 <no-dsa> (Minor issue)
[bookworm] - glib2.0 <no-dsa> (Minor issue)
https://gitlab.gnome.org/GNOME/glib/-/issues/3851
Fixed by: https://gitlab.gnome.org/GNOME/glib/-/commit/c5766cff61ffce0b8e787eae09908ac348338e5f (2.87.1)