CVE-2026-1485

Publication date 27 January 2026

Last updated 28 January 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	Needs evaluation
	24.04 LTS noble	Needs evaluation
	22.04 LTS jammy	Needs evaluation
	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