CVE-2026-1485 Glib: glib: local denial of service via buffer underflow in content type parsing
A local attacker can cause denial of service in applications using Glib by providing a crafted treemagic file that triggers a buffer underflow via integer wraparound.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-1485?
CVE-2026-1485 is a low-severity vulnerability in Red Hat Enterprise Linux 10, published on 27 Jan 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-124
Which versions are affected by CVE-2026-1485?
How do I fix CVE-2026-1485?
Apply the vendor's patch.
Is CVE-2026-1485 being exploited?
There is no known exploitation of CVE-2026-1485 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-1485, DEBIAN-CVE-2026-1485, ECHO-9546-a6bf-a698, GHSA-xc99-2v4m-jv2w, UBUNTU-CVE-2026-1485.