A flaw was found in GIMP's PSD file format plugin. This vulnerability, an unsigned integer underflow in the `block_rem` variable, occurs when a user opens a specially crafted `.psd` image file. The underflow leads to parser confusion, enabling an attacker to inject arbitrary data as layer resource blocks. This can ultimately result in arbitrary code execution, allowing the attacker to run malicious code on the victim's system.

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6470 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6470-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     August 27, 2026                       https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : gimp     CVE ID         : CVE-2026-18301 CVE-2026-18302 CVE-2026-18303 CVE-2026-18304                      CVE-2026-18305 CVE-2026-18306 CVE-2026-18307 CVE-2026-18308                      CVE-2026-42170 CVE-2026-58379 CVE-2026-58380 CVE-2026-58381                      CVE-2026-58384 CVE-2026-59088 CVE-2026-59090 CVE-2026-66758                      CVE-2026-66759

    Several vulnerabilities were discovered in GIMP, the GNU Image     Manipulation Program, which could result in denial of service or     potentially the execution of arbitrary code if malformed PSP, TIFF,     DDS, PSD, SGI, FLI, FITS or ICNS files are opened.

    For the stable distribution (trixie), these problems have been fixed in     version 3.0.4-3+deb13u10.

    We recommend that you upgrade your gimp packages.

    For the detailed security status of gimp please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/gimp

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian 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 SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3688-1 advisory.

    - CVE-2026-59088: GIMP: Denial of service via signed integer overflow in FLI file processing     (bsc#1274837).
    - CVE-2026-59090: GIMP: Arbitrary code execution in PSD plugin due to unsigned underflow (bsc#1274840).

Tenable has extracted the preceding description block directly from the SUSE 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 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 GIMP's PSD file format plugin. This vulnerability, an unsigned integer underflow in     the `block_rem` variable, occurs when a user opens a specially crafted `.psd` image file. The underflow     leads to parser confusion, enabling an attacker to inject arbitrary data as layer resource blocks. This     can ultimately result in arbitrary code execution, allowing the attacker to run malicious code on the     victim's system. (CVE-2026-59090)

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

ID	Name	Product	Family	Type	Severity
341055	Debian dsa-6470 : gimp - security update	Nessus	Debian Local Security Checks	Local	critical
339756	SUSE SLED15: gimp / gimp-devel / gimp-lang / gimp-plugin-aa / libgimp-2_0-0 / etc (SUSE-SU-2026:3688-1)	Nessus	SuSE Local Security Checks	Local	critical
334325	Linux Distros Unpatched Vulnerability : CVE-2026-59090	Nessus	Misc.	Local	critical

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