CVE-2026-22695

Publication date 12 January 2026

Last updated 12 February 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.1 · Medium

Score breakdown

Description

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.6.51 to 1.6.53, there is a heap buffer over-read in the libpng simplified API function png_image_finish_read when processing interlaced 16-bit PNGs with 8-bit output format and non-minimal row stride. This is a regression introduced by the fix for CVE-2025-65018. This vulnerability is fixed in 1.6.54.

Read the notes from the security team

Status

Package Ubuntu Release Status
libpng 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 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
18.04 LTS bionic
Fixed 1.6.34-1ubuntu0.18.04.2+esm2
16.04 LTS xenial
Fixed 1.6.20-2ubuntu0.1~esm3
firefox 25.10 questing
Not affected
25.04 plucky
Not affected
24.04 LTS noble
Not affected
22.04 LTS jammy
Not affected
chromium-browser 25.10 questing
Not affected
25.04 plucky
Not affected
24.04 LTS noble
Not affected
22.04 LTS jammy
Not affected
thunderbird 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

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Notes

mdeslaur

regression from CVE-2025-65018 fix

john-breton

This is conjoined with CVE-2025-65018. Once CVE-2025-65018 had been fixed for libpng in trusty and xenial, the fix for this CVE must be applied as well.

Patch details

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

Package Patch details
libpng1.6

Severity score breakdown

Parameter Value
Base score 6.1 · Medium
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-7963-1
    • libpng vulnerabilities
    • 14 January 2026
    • USN-8035-1
    • libpng vulnerabilities
    • 12 February 2026

Other references