Medium [CVE-2026-59088] denial of service via signed integer overflow in fli file processing
This medium-severity Red Hat Linux advisory covers CVE-2026-59088 affecting Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8.
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Summary
A flaw was found in GIMP. A signed integer overflow vulnerability exists in the `file-fli` plugin when processing FLI image files.
This occurs due to an incorrect calculation during memory allocation for image buffers, where the multiplication of image width and height can exceed the maximum integer value. A remote attacker could exploit this by tricking a user into opening a specially crafted FLI file, leading to the application crashing and resulting in a denial of service.
This Moderate impact flaw in GIMP's FLI file processing plugin can lead to a denial of service. The vulnerability requires user interaction, as an attacker must convince a local user to open a specially crafted FLI image file, which would cause the GIMP application to crash due to an integer overflow during memory allocation.
Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H). Weakness: CWE-190.
Affected Red Hat products: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- To mitigate this issue, users should avoid opening FLI image files from untrusted sources. As this vulnerability requires user interaction to open a specially crafted file, exercising caution with the origin of FLI files can prevent the denial of service.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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