Red Hat Security Advisory: libpng security update
A security vulnerability (CVE-2026-33636) in the libpng library used by Red Hat Enterprise Linux 10.0 Extended Update Support allows information disclosure and denial of service via out-of-bounds read/write in Neon palette expansion. This issue affects multiple architectures including x86_64, s390x, ppc64le, and aarch64. Red Hat has issued a security advisory with an update to address this vulnerability.
AI Analysis
Technical Summary
The libpng library in Red Hat Enterprise Linux 10 contains a vulnerability identified as CVE-2026-33636, involving out-of-bounds read and write operations during Neon palette expansion. This flaw can lead to information disclosure and denial of service conditions. Red Hat Product Security has rated this vulnerability as moderate and released updated libpng packages to fix the issue. The advisory references Red Hat Enterprise Linux 10 and its variants across multiple architectures including x86_64, s390x, ppc64le, and aarch64. No CVSS score is provided in the advisory, but the impact includes potential data exposure and service disruption.
Potential Impact
The vulnerability allows an attacker to cause information disclosure and denial of service through out-of-bounds memory access in the libpng library's Neon palette expansion functionality. This could compromise confidentiality and availability of affected systems running vulnerable versions of Red Hat Enterprise Linux 10.
Mitigation Recommendations
Red Hat has released updated libpng packages for Red Hat Enterprise Linux 10 and its variants that address CVE-2026-33636. Users should apply these official updates as described in Red Hat advisory RHSA-2026:14790 and the linked article https://access.redhat.com/articles/11258. No additional mitigation actions are indicated by the vendor.
Red Hat Security Advisory: libpng security update
Description
A security vulnerability (CVE-2026-33636) in the libpng library used by Red Hat Enterprise Linux 10.0 Extended Update Support allows information disclosure and denial of service via out-of-bounds read/write in Neon palette expansion. This issue affects multiple architectures including x86_64, s390x, ppc64le, and aarch64. Red Hat has issued a security advisory with an update to address this vulnerability.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The libpng library in Red Hat Enterprise Linux 10 contains a vulnerability identified as CVE-2026-33636, involving out-of-bounds read and write operations during Neon palette expansion. This flaw can lead to information disclosure and denial of service conditions. Red Hat Product Security has rated this vulnerability as moderate and released updated libpng packages to fix the issue. The advisory references Red Hat Enterprise Linux 10 and its variants across multiple architectures including x86_64, s390x, ppc64le, and aarch64. No CVSS score is provided in the advisory, but the impact includes potential data exposure and service disruption.
Potential Impact
The vulnerability allows an attacker to cause information disclosure and denial of service through out-of-bounds memory access in the libpng library's Neon palette expansion functionality. This could compromise confidentiality and availability of affected systems running vulnerable versions of Red Hat Enterprise Linux 10.
Mitigation Recommendations
Red Hat has released updated libpng packages for Red Hat Enterprise Linux 10 and its variants that address CVE-2026-33636. Users should apply these official updates as described in Red Hat advisory RHSA-2026:14790 and the linked article https://access.redhat.com/articles/11258. No additional mitigation actions are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:17685
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a19feb9e29bf47b500fccaf
Added to database: 05/29/2026, 21:01:45 UTC
Last enriched: 07/04/2026, 23:20:41 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 89
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