RHSA-2026:7503

Vulnerability from csaf_redhat - Published: 2026-04-10 20:48 - Updated: 2026-10-15 19:30
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: libpng: * libpng-1.6.56-1.1.hum1 (aarch64, x86_64) * libpng-devel-1.6.56-1.1.hum1 (aarch64, x86_64) * libpng-static-1.6.56-1.1.hum1 (aarch64, x86_64) * libpng-tools-1.6.56-1.1.hum1 (aarch64, x86_64) * libpng-1.6.56-1.1.hum1.src (src)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2025-28164

A flaw was found in libpng. This buffer overflow vulnerability allows a local attacker to cause a denial of service (DoS) by exploiting the `png_create_read_struct()` function. This can lead to the affected system becoming unresponsive or crashing.

5.0 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libpng-devel-0:1.6.56-1.1.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libpng-devel-0:1.6.56-1.1.hum1@x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libpng-static-0:1.6.56-1.1.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libpng-static-0:1.6.56-1.1.hum1@x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libpng-tools-0:1.6.56-1.1.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libpng-tools-0:1.6.56-1.1.hum1@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Moderate
CVE-2026-25646

A heap based buffer overflow flaw has been discovered in LibPNG. Prior to version 1.6.55, an out-of-bounds read vulnerability exists in the png_set_quantize() API function. When the function is called with no histogram and the number of colors in the palette is more than twice the maximum supported by the user's display, certain palettes will cause the function to enter into an infinite loop that reads past the end of an internal heap-allocated buffer. The images that trigger this vulnerability are valid per the PNG specification.

7.0 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
CWE-125 - Out-of-bounds Read
Affected products
Fixed 9 products, the same list as for CVE-2025-28164
Threats
Impact Important
References
To clipboard 

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  "vulnerabilities": [
    {
      "cve": "CVE-2025-28164",
      "cwe": {
        "id": "CWE-120",
        "name": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)"
      },
      "discovery_date": "2026-01-27T16:01:50.214802+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2433398"
        }
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      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in libpng. This buffer overflow vulnerability allows a local attacker to cause a denial of service (DoS) by exploiting the `png_create_read_struct()` function. This can lead to the affected system becoming unresponsive or crashing.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libpng: libpng: Denial of Service via buffer overflow in png_create_read_struct() function",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is a MODERATE impact vulnerability affecting libpng versions 1.6.43-1.6.46. A local attacker can exploit a buffer overflow in the `png_create_read_struct()` function, leading to a denial of service. Exploitation requires the attacker to have local access to the system and provide a specially crafted PNG file.\n\nFor `java-17-openjdk-headless` and `java-21-openjdk-headless`, while the affected code is present in the bundled sources, it is not exercised by these headless packages.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
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          "summary": "RHBZ#2433398",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2433398"
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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-28164",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-28164"
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          "summary": "https://gist.github.com/kittener/506516f8c22178005b4379c8b2a7de20",
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          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
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          "details": "To mitigate the risk of denial of service, users should avoid processing untrusted PNG image files with applications that utilize libpng. Exercise caution when opening or viewing PNG files from unknown or suspicious sources.",
          "product_ids": [
            "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@src",
            "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@x86_64",
            "Red Hat Hardened Images:libpng-devel-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-devel-0:1.6.56-1.1.hum1@x86_64",
            "Red Hat Hardened Images:libpng-static-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-static-0:1.6.56-1.1.hum1@x86_64",
            "Red Hat Hardened Images:libpng-tools-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-tools-0:1.6.56-1.1.hum1@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.0,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@src",
            "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@x86_64",
            "Red Hat Hardened Images:libpng-devel-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-devel-0:1.6.56-1.1.hum1@x86_64",
            "Red Hat Hardened Images:libpng-static-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-static-0:1.6.56-1.1.hum1@x86_64",
            "Red Hat Hardened Images:libpng-tools-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-tools-0:1.6.56-1.1.hum1@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "libpng: libpng: Denial of Service via buffer overflow in png_create_read_struct() function"
    },
    {
      "cve": "CVE-2026-25646",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "discovery_date": "2026-02-10T18:01:28.232408+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2438542"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A heap based buffer overflow flaw has been discovered in LibPNG. Prior to version 1.6.55, an out-of-bounds read vulnerability exists in the png_set_quantize() API function. When the function is called with no histogram and the number of colors in the palette is more than twice the maximum supported by the user\u0027s display, certain palettes will cause the function to enter into an infinite loop that reads past the end of an internal heap-allocated buffer. The images that trigger this vulnerability are valid per the PNG specification.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libpng: LIBPNG has a heap buffer overflow in png_set_quantize",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@aarch64",
          "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@src",
          "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@x86_64",
          "Red Hat Hardened Images:libpng-devel-0:1.6.56-1.1.hum1@aarch64",
          "Red Hat Hardened Images:libpng-devel-0:1.6.56-1.1.hum1@x86_64",
          "Red Hat Hardened Images:libpng-static-0:1.6.56-1.1.hum1@aarch64",
          "Red Hat Hardened Images:libpng-static-0:1.6.56-1.1.hum1@x86_64",
          "Red Hat Hardened Images:libpng-tools-0:1.6.56-1.1.hum1@aarch64",
          "Red Hat Hardened Images:libpng-tools-0:1.6.56-1.1.hum1@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-25646"
        },
        {
          "category": "external",
          "summary": "RHBZ#2438542",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2438542"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-25646",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-25646"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-25646",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25646"
        },
        {
          "category": "external",
          "summary": "http://www.openwall.com/lists/oss-security/2026/02/09/7",
          "url": "http://www.openwall.com/lists/oss-security/2026/02/09/7"
        },
        {
          "category": "external",
          "summary": "https://github.com/pnggroup/libpng/commit/01d03b8453eb30ade759cd45c707e5a1c7277d88",
          "url": "https://github.com/pnggroup/libpng/commit/01d03b8453eb30ade759cd45c707e5a1c7277d88"
        },
        {
          "category": "external",
          "summary": "https://github.com/pnggroup/libpng/security/advisories/GHSA-g8hp-mq4h-rqm3",
          "url": "https://github.com/pnggroup/libpng/security/advisories/GHSA-g8hp-mq4h-rqm3"
        }
      ],
      "release_date": "2026-02-10T17:04:38.501000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-04-10T20:48:24+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@src",
            "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@x86_64",
            "Red Hat Hardened Images:libpng-devel-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-devel-0:1.6.56-1.1.hum1@x86_64",
            "Red Hat Hardened Images:libpng-static-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-static-0:1.6.56-1.1.hum1@x86_64",
            "Red Hat Hardened Images:libpng-tools-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-tools-0:1.6.56-1.1.hum1@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:7503"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
          "product_ids": [
            "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@src",
            "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@x86_64",
            "Red Hat Hardened Images:libpng-devel-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-devel-0:1.6.56-1.1.hum1@x86_64",
            "Red Hat Hardened Images:libpng-static-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-static-0:1.6.56-1.1.hum1@x86_64",
            "Red Hat Hardened Images:libpng-tools-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-tools-0:1.6.56-1.1.hum1@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@src",
            "Red Hat Hardened Images:libpng-0:1.6.56-1.1.hum1@x86_64",
            "Red Hat Hardened Images:libpng-devel-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-devel-0:1.6.56-1.1.hum1@x86_64",
            "Red Hat Hardened Images:libpng-static-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-static-0:1.6.56-1.1.hum1@x86_64",
            "Red Hat Hardened Images:libpng-tools-0:1.6.56-1.1.hum1@aarch64",
            "Red Hat Hardened Images:libpng-tools-0:1.6.56-1.1.hum1@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "libpng: LIBPNG has a heap buffer overflow in png_set_quantize"
    }
  ]
}



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