A flaw was found in gdk-pixbuf. When parsing a specially crafted ICO file with pixel values that exceed the defined palette range, an out-of-bounds read can occur due to improper bounds checking against the actual palette size. This vulnerability causes heap bytes to be interpreted as valid palette indices and rendered as RGB pixel values in the output image, allowing an attacker to extract heap content via the generated output, such as a thumbnail.

The remote Fedora 45 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-f55d6fc9f8 advisory.

    Fixes https://access.redhat.com/security/cve/CVE-2026-81893

    ----

    Fixes CVE-2026-16768: https://access.redhat.com/security/cve/CVE-2026-16768


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-cf5d926f46 advisory.

    Fixes https://access.redhat.com/security/cve/CVE-2026-81893

    ----

    Fixes CVE-2026-16768: https://access.redhat.com/security/cve/CVE-2026-16768



Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 44 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-461d7d7380 advisory.

    Fixes CVE-2026-16768: https://access.redhat.com/security/cve/CVE-2026-16768

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw was found in gdk-pixbuf. When parsing a specially crafted ICO file with pixel values that exceed     the defined palette range, an out-of-bounds read can occur due to improper bounds checking against the     actual palette size. This vulnerability causes heap bytes to be interpreted as valid palette indices and     rendered as RGB pixel values in the output image, allowing an attacker to extract heap content via the     generated output, such as a thumbnail. (CVE-2026-16768)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
344873	Fedora 45 : gdk-pixbuf2 (2026-f55d6fc9f8)	Nessus	Fedora Local Security Checks	Local	medium
344492	Fedora 43 : gdk-pixbuf2 (2026-cf5d926f46)	Nessus	Fedora Local Security Checks	Local	medium
341809	Fedora 44 : gdk-pixbuf2 (2026-461d7d7380)	Nessus	Fedora Local Security Checks	Local	medium
329398	Linux Distros Unpatched Vulnerability : CVE-2026-16768	Nessus	Misc.	Local	medium

Detections

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CVE-2026-16768

medium

Tenable Plugins

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medium

medium

medium