CVE-2025-7039

Name	CVE-2025-7039
Description	A flaw was found in glib. An integer overflow during temporary file creation leads to an out-of-bounds memory access, allowing an attacker to potentially perform path traversal or access private temporary file content by creating symbolic links. This vulnerability allows a local attacker to manipulate file paths and access unauthorized data. The core issue stems from insufficient validation of file path lengths during temporary file operations.
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	1110640

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+deb11u6	vulnerable
	bookworm	2.74.6-2+deb12u7	fixed
	bookworm (security)	2.74.6-2+deb12u2	vulnerable
	trixie	2.84.4-3~deb13u1	fixed
	forky, sid	2.86.1-1	fixed

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

Package	Type	Release	Fixed Version	Debian Bugs
glib2.0	source	bookworm	2.74.6-2+deb12u7
glib2.0	source	trixie	2.84.4-3~deb13u1
glib2.0	source	(unstable)	2.84.4-1	1110640

Notes

[bullseye] - glib2.0 <postponed> (Minor issue; can be fixed in next update)
https://gitlab.gnome.org/GNOME/glib/-/issues/3716
https://gitlab.gnome.org/GNOME/glib/-/merge_requests/4674
Fixed by: https://gitlab.gnome.org/GNOME/glib/-/commit/61e963284889ddb4544e6f1d5261c16120f6fcc3 (2.85.2)