CVE-2026-1489

Publication date 27 January 2026

Last updated 5 February 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.4 · Medium

Score breakdown

Description

A flaw was found in GLib. An integer overflow vulnerability in its Unicode case conversion implementation can lead to memory corruption. By processing specially crafted and extremely large Unicode strings, an attacker could trigger an undersized memory allocation, resulting in out-of-bounds writes. This could cause applications utilizing GLib for string conversion to crash or become unstable.

Status

Package Ubuntu Release Status
glib2.0 26.04 LTS resolute
Fixed 2.87.2-2
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
Vulnerable
18.04 LTS bionic
Vulnerable
16.04 LTS xenial
Vulnerable
14.04 LTS trusty
Vulnerable

Patch details

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

Package Patch details
glib2.0

Severity score breakdown

CVSS version: CVSS v3.0

Base score 5.4 · Medium

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

References

Related Ubuntu Security Notices (USN)

Other references

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