High [CVE-2026-25646] LIBPNG has a heap buffer overflow in png_set_quantize
This high-severity Red Hat Linux advisory covers CVE-2026-25646 affecting Red Hat Build of OpenJDK 17.0.9, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 7 Extended Lifecycle Support.
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Summary
LIBPNG has a heap buffer overflow in png_set_quantize. Red Hat rates this important (CVSS 7).
Weakness: CWE-125. Affected package(s): rhcos, libpng15, libpng, libpng12, java, rhaiis/vllm-spyre-rhel9:1778244546.
Resolved in Red Hat advisory RHSA-2026:5606 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: Red Hat Build of OpenJDK 17.0.9; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.2 Advanced Update Support; and 30 more.
- rhcos-414.92.202605060243-0
- libpng15-0:1.5.30-8.el8_10
- libpng15-0:1.5.30-14.el9_7.1
- libpng-2:1.6.34-10.el8_10
- libpng12-0:1.2.57-5.el8_8.1
- libpng12-0:1.2.57-5.el8_6.1
- java-11-openjdk-1:11.0.31.0.11-1.el8
- java-11-openjdk-1:11.0.31.0.11-1.el9
- rhcos-415.92.202605060220-0
- rhaiis/vllm-spyre-rhel9:1778244546
- libpng-2:1.6.40-8.el10_1.2
- rhcos-413.92.202604080111-0
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:5606
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:5606 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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