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Medium 2 vendors · 2 advisories

CVE-2026-22801: LIBPNG has an integer truncation causing heap buffer over-read in png_image_write_*

CVE-2026-22801 key facts

CISA KEV
Not listed (catalogue checked )
Highest advisory rating
Medium
CVSS base score
6.8 (NetApp), 6.6 (Red Hat)
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H · base score 6.8, scored by GitHub_MAttack vector: local. Attack complexity: low. Privileges required: none. User interaction: none. Scope: unchanged. Confidentiality impact: low. Integrity impact: none. Availability impact: high.
Weakness
  • CWE-125: Out-of-bounds Read
  • CWE-190: Integer Overflow or Wraparound
EPSS
0.13% chance of exploitation in the next 30 days (2nd percentile). FIRST EPSS, .
CISA SSVC
Exploitation: none observed. Automatable: no. Technical impact: partial. CISA, .
Fixed releases
  • Red Hat: RHSA-2026:5606
Vendor advisories
2 from NetApp, Red Hat
Assigned by
GitHub_M (CNA)
CVE record published
Listed by VulniPulse
Record changed

Ratings, versions and fixes are quoted from the vendor advisories that cover only CVE-2026-22801; each belongs to its advisory, not to every product listed. How records are collected and checked.

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.

Text from the CVE.org record (GitHub_M).

How do I fix CVE-2026-22801?

Upgrade to a fixed release named by the vendor:

  • Red Hat: RHSA-2026:5606
  • Update the affected package(s) to the fixed version shipped in RHSA-2026:5606 (`sudo dnf update` / `yum update`). (Red Hat)

Vendor advisories for CVE-2026-22801

NetApp

1 advisory
  • Advisory severityMedium6.8

    Medium [CVE-2026-22801] Libpng Vulnerability in NetApp Products

    NTAP-20260130-0011Source published Source updated

    Multiple NetApp products incorporate libpng. Libpng versions 1.6.26 prior to 1.6.54 are susceptible to a vulnerability which when successfully exploited could lead to disclosure of sensitive information or Denial of Service (DoS). NetApp reports that one or more additional products remain under investigation; review the canonical advisory for current status. NetApp states there is no workaround available at this time.

    Affected products in this advisory
    No product details extracted. Check the source bulletin.
    Source-reported affected versions
    • 1.6.26
    • 1.6.54
    Source-reported fixed versions
    No fixed-version detail extracted. This does not mean no fix exists.
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

Red Hat

1 advisory
  • Advisory severityMedium6.6

    Medium [CVE-2026-22801] Information disclosure and denial of service via integer truncation in simplified write API

    CVE-2026-22801Source published

    Information disclosure and denial of service via integer truncation in simplified write API. Red Hat rates this moderate (CVSS 6.6). Weakness: CWE-125. Affected package(s): libpng, discovery/discovery-ui-rhel9:1773273070, rhaiis/vllm-rocm-rhel9:1775680262, rhaiis/vllm-cuda-rhel9:1775680192, rhceph/rhceph, java. Resolved in Red Hat advisory RHSA-2026:5606 — update the affected packages (`sudo dnf update`).

    Related products — impact not confirmed
    • Red Hat Enterprise Linux 9
    • Red Hat Enterprise Linux 8
    • Red Hat Enterprise Linux 7
    • Red Hat Enterprise Linux 1

    6 more entries in the full advisory.

    Source-reported affected versions
    • libpng-2:1.6.37-12.el9_0.2
    • libpng-2:1.6.37-12.el9_2.2
    • discovery/discovery-ui-rhel9:1773273070
    • rhaiis/vllm-rocm-rhel9:1775680262

    8 more entries in the full advisory.

    Source-reported fixed versions
    • RHSA-2026:5606
    Mitigation guidance
    • Update the affected package(s) to the fixed version shipped in RHSA-2026:5606 (`sudo dnf update` / `yum update`).
    Full advisory and evidenceOpen source bulletin

References

Timeline

  1. First vendor advisory listed by VulniPulse
  2. CVE record published
  3. CVE record last updated

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