Red Hat Security Advisory: libpng security update
The libpng packages contain a library of functions for creating and manipulating Portable Network Graphics (PNG) image format files. Security Fix(es): * libpng: libpng: Information disclosure and denial of service via out-of-bounds read/write in Neon palette expansion (CVE-2026-33636) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
The libpng library in Red Hat Enterprise Linux 9.0 and related distributions contains a vulnerability (CVE-2026-33636) due to out-of-bounds read/write in the Neon palette expansion code. This flaw can cause information disclosure and denial of service conditions. Red Hat Product Security has published an official security advisory (RHSA-2026:17685) describing the issue and providing updated libpng packages that fix the vulnerability. The advisory covers multiple architectures including x86_64, ppc64le, aarch64, and s390x. No CVSS score is provided in the advisory, but the severity is rated as moderate.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to cause denial of service or potentially disclose sensitive information by triggering out-of-bounds memory access in the libpng Neon palette expansion. This affects systems running vulnerable versions of libpng on Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions and related packages. No known exploits are reported in the wild, limiting immediate risk.
Mitigation Recommendations
Red Hat has released updated libpng packages that address CVE-2026-33636. Users of affected Red Hat Enterprise Linux 9.0 systems should apply the security update as described in the Red Hat advisory RHSA-2026:17685 and the linked article https://access.redhat.com/articles/11258. Applying the official patch fully mitigates the vulnerability. There is no indication that additional mitigations are required beyond applying the update.
Red Hat Security Advisory: libpng security update
Description
The libpng packages contain a library of functions for creating and manipulating Portable Network Graphics (PNG) image format files. Security Fix(es): * libpng: libpng: Information disclosure and denial of service via out-of-bounds read/write in Neon palette expansion (CVE-2026-33636) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The libpng library in Red Hat Enterprise Linux 9.0 and related distributions contains a vulnerability (CVE-2026-33636) due to out-of-bounds read/write in the Neon palette expansion code. This flaw can cause information disclosure and denial of service conditions. Red Hat Product Security has published an official security advisory (RHSA-2026:17685) describing the issue and providing updated libpng packages that fix the vulnerability. The advisory covers multiple architectures including x86_64, ppc64le, aarch64, and s390x. No CVSS score is provided in the advisory, but the severity is rated as moderate.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to cause denial of service or potentially disclose sensitive information by triggering out-of-bounds memory access in the libpng Neon palette expansion. This affects systems running vulnerable versions of libpng on Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions and related packages. No known exploits are reported in the wild, limiting immediate risk.
Mitigation Recommendations
Red Hat has released updated libpng packages that address CVE-2026-33636. Users of affected Red Hat Enterprise Linux 9.0 systems should apply the security update as described in the Red Hat advisory RHSA-2026:17685 and the linked article https://access.redhat.com/articles/11258. Applying the official patch fully mitigates the vulnerability. There is no indication that additional mitigations are required beyond applying the update.
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: 5/29/2026, 9:01:45 PM
Last enriched: 5/29/2026, 9:05:38 PM
Last updated: 5/31/2026, 5:00:51 AM
Views: 6
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