RHSA-2026:30349

Vulnerability from csaf_redhat - Published: 2026-06-26 19:28 - Updated: 2026-06-27 08:45
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: libtiff: * libtiff-4.7.1-2.2.hum1 (aarch64, x86_64) * libtiff-devel-4.7.1-2.2.hum1 (aarch64, x86_64) * libtiff-static-4.7.1-2.2.hum1 (aarch64, x86_64) * libtiff-tools-4.7.1-2.2.hum1 (aarch64, x86_64) * libtiff-4.7.1-2.2.hum1.src (src) Security Fix(es): libtiff: * CVE-2026-4775
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-2026-4775

A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerability in the putcontig8bitYCbCr44tile function by providing a specially crafted TIFF file. This flaw can lead to an out-of-bounds heap write due to incorrect memory pointer calculations, potentially causing a denial of service (application crash) or arbitrary code execution.

7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-190 - Integer Overflow or Wraparound
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:libtiff-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libtiff-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libtiff-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Important
References
Acknowledgments
Quang Luong PrymEvol
To clipboard 

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        "category": "summary",
        "text": "An update for Red Hat Hardened Images RPMs is now available.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "This update includes the following RPMs:\n\nlibtiff:\n  * libtiff-4.7.1-2.2.hum1 (aarch64, x86_64)\n  * libtiff-devel-4.7.1-2.2.hum1 (aarch64, x86_64)\n  * libtiff-static-4.7.1-2.2.hum1 (aarch64, x86_64)\n  * libtiff-tools-4.7.1-2.2.hum1 (aarch64, x86_64)\n  * libtiff-4.7.1-2.2.hum1.src (src)\n\nSecurity Fix(es):\n\nlibtiff:\n  * CVE-2026-4775",
        "title": "Details"
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    "title": "Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update",
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        "relates_to_product_reference": "Red Hat Hardened Images"
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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Quang Luong",
            "PrymEvol"
          ]
        }
      ],
      "cve": "CVE-2026-4775",
      "cwe": {
        "id": "CWE-190",
        "name": "Integer Overflow or Wraparound"
      },
      "discovery_date": "2026-03-24T14:23:23.826000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2450768"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerability in the putcontig8bitYCbCr44tile function by providing a specially crafted TIFF file. This flaw can lead to an out-of-bounds heap write due to incorrect memory pointer calculations, potentially causing a denial of service (application crash) or arbitrary code execution.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libtiff: libtiff: Arbitrary code execution or denial of service via signed integer overflow in TIFF file processing",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "A flaw in the libtiff library, affecting the processing of specially crafted TIFF files, could lead to a denial of service or potentially arbitrary code execution. This vulnerability, caused by a signed integer overflow during TIFF image processing, results in an out-of-bounds heap write. Red Hat products that process untrusted TIFF files using libtiff may be impacted.",
          "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"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:libtiff-main@aarch64",
          "Red Hat Hardened Images:libtiff-main@src",
          "Red Hat Hardened Images:libtiff-main@x86_64"
        ]
      },
      "references": [
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-4775"
        },
        {
          "category": "external",
          "summary": "RHBZ#2450768",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2450768"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-4775",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-4775"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-4775",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4775"
        }
      ],
      "release_date": "2026-03-24T14:33:35.730000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-26T19:28:27+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:libtiff-main@aarch64",
            "Red Hat Hardened Images:libtiff-main@src",
            "Red Hat Hardened Images:libtiff-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30349"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, avoid processing untrusted or maliciously crafted TIFF files with applications linked against the libtiff library. If processing untrusted TIFF files is unavoidable, consider running the affected applications within a sandboxed environment to limit the potential impact of successful exploitation. This operational control helps contain the effects of an out-of-bounds write, reducing the risk of denial of service or arbitrary code execution.",
          "product_ids": [
            "Red Hat Hardened Images:libtiff-main@aarch64",
            "Red Hat Hardened Images:libtiff-main@src",
            "Red Hat Hardened Images:libtiff-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:libtiff-main@aarch64",
            "Red Hat Hardened Images:libtiff-main@src",
            "Red Hat Hardened Images:libtiff-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "libtiff: libtiff: Arbitrary code execution or denial of service via signed integer overflow in TIFF file processing"
    }
  ]
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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