--- title: "CVE-2026-22801\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2026-22801?format=md keywords: index, follow --- # CVE-2026-22801 Publication date 12 January 2026 Last updated 12 February 2026 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) ## Cvss 3 Severity Score **6.8 · Medium** [Score breakdown](https://ubuntu.com/security/CVE-2026-22801?format=md#impact-score) Toggle side navigation ## Description LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.6.26 to 1.6.53, there is an integer truncation in the libpng simplified write API functions png\_write\_image\_16bit and png\_write\_image\_8bit causes heap buffer over-read when the caller provides a negative row stride (for bottom-up image layouts) or a stride exceeding 65535 bytes. The bug was introduced in libpng 1.6.26 (October 2016) by casts added to silence compiler warnings on 16-bit systems. This vulnerability is fixed in 1.6.54. ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | chromium-browser | 26.04 LTS resolute | Not affected | | 25.10 questing | Not affected | | 25.04 plucky | Not affected | | 24.04 LTS noble | Not affected | | 22.04 LTS jammy | Not affected | | firefox | 26.04 LTS resolute | Not affected | | 25.10 questing | Not affected | | 25.04 plucky | Not affected | | 24.04 LTS noble | Not affected | | 22.04 LTS jammy | Not affected | | libpng | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 25.04 plucky | Not in release | | 24.04 LTS noble | Not in release | | 22.04 LTS jammy | Not in release | | 16.04 LTS xenial | Not affected | | 14.04 LTS trusty | Not affected | | libpng1.6 | 26.04 LTS resolute | Fixed 1.6.54-1 | | 25.10 questing | Fixed 1.6.50-1ubuntu0.3 | | 25.04 plucky | Fixed 1.6.47-1.1ubuntu0.3 | | 24.04 LTS noble | Fixed 1.6.43-5ubuntu0.3 | | 22.04 LTS jammy | Fixed 1.6.37-3ubuntu0.3 | | 20.04 LTS focal | Fixed 1.6.37-2ubuntu0.1~esm2 Ubuntu Pro | | 18.04 LTS bionic | Fixed 1.6.34-1ubuntu0.18.04.2+esm2 Ubuntu Pro | | 16.04 LTS xenial | Not affected | | thunderbird | 26.04 LTS resolute | Not affected | | 25.10 questing | Not affected | | 25.04 plucky | Ignored end of life, was needs-triage | | 24.04 LTS noble | Not affected | | 22.04 LTS jammy | Not affected | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) * [Patch details](https://ubuntu.com/security/CVE-2026-22801?format=md#patch-details) ### Get expanded security coverage with Ubuntu Pro Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use. [Get Ubuntu Pro](https://ubuntu.com/pro) [30-day free trial](https://ubuntu.com/pro/free-trial) ### Patch details For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) | Package | Patch details | | --- | --- | | libpng1.6 | * Upstream: [cf155de](https://github.com/pnggroup/libpng/commit/cf155de014) | ## Severity score breakdown CVSS version: CVSS v3.0 **Base score** 6.8 · Medium * Base metrics | Parameter | Value | | --- | --- | | Attack vector | Local | | Attack complexity | Low | | Privileges required | None | | User interaction | None | | Scope | Unchanged | | Confidentiality impact | Low | | Integrity impact | None | | Availability impact | High | * Scores | Parameter | Value | | --- | --- | | Base score | 6.8 · Medium | | Exploitability score | - | | Impact score | - | **Vector:** CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-22801) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-22801) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-22801) * [Debian](https://security-tracker.debian.org/tracker/CVE-2026-22801) ### Related Ubuntu Security Notices (USN) + [USN-7963-1](https://usn.ubuntu.com/USN-7963-1) + libpng vulnerabilities + 14 January 2026 + [USN-8035-1](https://usn.ubuntu.com/USN-8035-1) + libpng vulnerabilities + 12 February 2026 ### Other references * * *