Medium [CVE-2026-82328] Gimp: heap out-of-bounds read in ico loader via unvalidated used_clrs palette count
This medium-severity Red Hat Linux advisory covers CVE-2026-82328 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 the file-ico plugin in GIMP. This incorrect validation leads to improper memory bounds checking, resulting in a heap out-of-bounds read.
This issue can result in an application crash, leading to a denial of service or a limited information disclosure of heap memory contents. To exploit this vulnerability, an attacker needs to convince a user to process a specially crafted ICO image with GIMP, reducing the likelihood of exploitation.
Due to this reason, this flaw has been rated with a moderate severity. Red Hat severity: Moderate — CVSS 6.1 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H).
Weakness: CWE-125. 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 does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: gimp-devel-tools; Red Hat package: gimp-help-browser; Red Hat package: gimp-libs; Red Hat package: gimp.src.
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 hours 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 hours ago·verify at source
Mitigation checklist
- To mitigate this vulnerability, do not open ICO files from untrusted sources with GIMP.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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