CVE-2026-82328
Gimp: heap out-of-bounds read in ico loader via unvalidated used_clrs palette count
A flaw was found in the file-ico plugin in GIMP. When processing a specially crafted ICO image file, the plugin does not properly validate the used_clrs (palette count) parameter. 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.
Fixes and workarounds
Workaround
To mitigate this vulnerability, do not open ICO files from untrusted sources with GIMP.
Source: CNA: redhatAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| GIMP GNOME gimp
https://gitlab.gnome.org/GNOME/gimp |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 6 Red Hat gimp
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unknown |
CNA: redhat |
| Red Hat Enterprise Linux 7 Red Hat gimp
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8 Red Hat gimp:2.8/gimp
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9 Red Hat gimp
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 6.1 medium |
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H | CNA: redhat |
Exploit evidence
- https://gitlab.gnome.org/GNOME/gimp/-/work_items/16585
exploit · ADP: CISA-ADP
References
- https://access.redhat.com/security/cve/CVE-2026-82328CNA: redhat · vdb-entry, x_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2525612CNA: redhat · issue-tracking, x_refsource_REDHAT
- https://gitlab.gnome.org/GNOME/gimp/-/work_items/16585CNA: redhat
- https://gitlab.gnome.org/GNOME/gimp/-/work_items/16585ADP: CISA-ADP · exploit
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