RHSA-2026:11806

Vulnerability from csaf_redhat - Published: 2026-04-29 15:46 - Updated: 2026-04-30 16:32
Summary
Red Hat Security Advisory: gdk-pixbuf2 security update
Severity
Important
Notes
Topic: An update for gdk-pixbuf2 is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The gdk-pixbuf2 packages provide an image loading library that can be extended by loadable modules for new image formats. It is used by toolkits such as GTK+ or clutter. Security Fix(es): * gdk-pixbuf: gdk-pixbuf: Denial of Service via heap-based buffer overflow when processing a specially crafted JPEG image (CVE-2026-5201) 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.
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-2026-5201

A flaw was found in the gdk-pixbuf library. This heap-based buffer overflow vulnerability occurs in the JPEG image loader due to improper validation of color component counts when processing a specially crafted JPEG image. A remote attacker can exploit this flaw without user interaction, for example, via thumbnail generation. Successful exploitation leads to application crashes and denial of service (DoS) conditions.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-122 - Heap-based Buffer Overflow
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:11806
Workaround To reduce the risk of exploitation, avoid opening or processing untrusted JPEG image files. This operational control helps prevent the automatic triggering of the vulnerability, for example, during thumbnail generation, which could otherwise lead to application instability.
References
Acknowledgments
Kağan Çapar
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          "names": [
            "Ka\u011fan \u00c7apar"
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      "cve": "CVE-2026-5201",
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          "text": "A flaw was found in the gdk-pixbuf library. This heap-based buffer overflow vulnerability occurs in the JPEG image loader due to improper validation of color component counts when processing a specially crafted JPEG image. A remote attacker can exploit this flaw without user interaction, for example, via thumbnail generation. Successful exploitation leads to application crashes and denial of service (DoS) conditions.",
          "title": "Vulnerability description"
        },
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          "category": "summary",
          "text": "gdk-pixbuf: gdk-pixbuf: Denial of Service via heap-based buffer overflow when processing a specially crafted JPEG image",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "An Important heap-based buffer overflow flaw exists in the `gdk-pixbuf` library\u0027s JPEG image loader. This vulnerability can be triggered automatically without user interaction when processing a specially crafted JPEG image, such as during thumbnail generation. Successful exploitation leads to application crashes and denial-of-service conditions in applications utilizing `gdk-pixbuf` for image handling.",
          "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": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-5201"
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          "url": "https://www.cve.org/CVERecord?id=CVE-2026-5201"
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          "category": "external",
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            "integrityImpact": "NONE",
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      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "gdk-pixbuf: gdk-pixbuf: Denial of Service via heap-based buffer overflow when processing a specially crafted JPEG image"
    }
  ]
}


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Tags
Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.