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 integer truncation in simplified write API (CVE-2026-22801) * libpng: libpng: Denial of service and information disclosure via heap buffer over-read in png_image_finish_read (CVE-2026-22695) * libpng: LIBPNG has a heap buffer overflow in png_set_quantize (CVE-2026-25646) 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
This advisory covers three distinct vulnerabilities in the libpng library: CVE-2026-22801 involves information disclosure and denial of service caused by integer truncation in the simplified write API; CVE-2026-22695 involves denial of service and information disclosure due to a heap buffer over-read in the png_image_finish_read function; CVE-2026-25646 is a heap buffer overflow vulnerability in the png_set_quantize function. These vulnerabilities affect Red Hat Enterprise Linux 8.8 and related update services. Red Hat has issued patches to fix these issues as part of advisory RHSA-2026:4729.
Potential Impact
Successful exploitation of these vulnerabilities could lead to denial of service conditions and unauthorized information disclosure when processing crafted PNG images. The heap buffer overflow could potentially allow memory corruption. These issues impact systems running vulnerable versions of libpng on Red Hat Enterprise Linux 8.8, potentially affecting applications that process PNG images.
Mitigation Recommendations
Red Hat has released an official security update for libpng in Red Hat Enterprise Linux 8.8 to address these vulnerabilities. Users should apply the update as described in Red Hat advisory RHSA-2026:4729 and the referenced article https://access.redhat.com/articles/11258 to remediate these issues. No additional mitigation steps are indicated beyond applying the provided patches.
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 integer truncation in simplified write API (CVE-2026-22801) * libpng: libpng: Denial of service and information disclosure via heap buffer over-read in png_image_finish_read (CVE-2026-22695) * libpng: LIBPNG has a heap buffer overflow in png_set_quantize (CVE-2026-25646) 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.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers three distinct vulnerabilities in the libpng library: CVE-2026-22801 involves information disclosure and denial of service caused by integer truncation in the simplified write API; CVE-2026-22695 involves denial of service and information disclosure due to a heap buffer over-read in the png_image_finish_read function; CVE-2026-25646 is a heap buffer overflow vulnerability in the png_set_quantize function. These vulnerabilities affect Red Hat Enterprise Linux 8.8 and related update services. Red Hat has issued patches to fix these issues as part of advisory RHSA-2026:4729.
Potential Impact
Successful exploitation of these vulnerabilities could lead to denial of service conditions and unauthorized information disclosure when processing crafted PNG images. The heap buffer overflow could potentially allow memory corruption. These issues impact systems running vulnerable versions of libpng on Red Hat Enterprise Linux 8.8, potentially affecting applications that process PNG images.
Mitigation Recommendations
Red Hat has released an official security update for libpng in Red Hat Enterprise Linux 8.8 to address these vulnerabilities. Users should apply the update as described in Red Hat advisory RHSA-2026:4729 and the referenced article https://access.redhat.com/articles/11258 to remediate these issues. No additional mitigation steps are indicated beyond applying the provided patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:4729
- Cve Count
- 3
- Additional Cves
- ["CVE-2026-22801","CVE-2026-25646"]
- Cvss Version
- null
Threat ID: 6a1f4e86e29bf47b5007e885
Added to database: 06/02/2026, 21:43:34 UTC
Last enriched: 06/27/2026, 23:39:07 UTC
Last updated: 07/31/2026, 19:24:46 UTC
Views: 61
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