CVE-2026-1485

Publication date 27 January 2026

Last updated 5 February 2026

Ubuntu priority

Cvss 3 Severity Score

Description

A flaw was found in Glib's content type parsing logic. This buffer underflow vulnerability occurs because the length of a header line is stored in a signed integer, which can lead to integer wraparound for very large inputs. This results in pointer underflow and out-of-bounds memory access. Exploitation requires a local user to install or process a specially crafted treemagic file, which can lead to local denial of service or application instability.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
glib2.0	25.10 questing	Fixed 2.86.0-2ubuntu0.3
	24.04 LTS noble	Fixed 2.80.0-6ubuntu3.8
	22.04 LTS jammy	Fixed 2.72.4-0ubuntu2.9
	20.04 LTS focal	Needs evaluation
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation
	14.04 LTS trusty	Needs evaluation

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
glib2.0	Upstream: https://gitlab.gnome.org/GNOME/glib/-/merge_requests/4980 Upstream: https://gitlab.gnome.org/GNOME/glib/-/merge_requests/4981 Upstream: ee5acb2

Severity score breakdown

Parameter	Value
Base score	2.8 · Low
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	Low
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

References

Related Ubuntu Security Notices (USN)

USN-8017-1
GLib vulnerabilities
5 February 2026