# CVE-2026-82324: Gimp: heap out-of-bounds reads in iff/ilbm loader from ham row size mismatch and nplanes=0

Status: published. Published: 2026-08-28. Updated: 2026-11-06.

A flaw was found in the file-iff (IFF/ILBM) plugin in GIMP. When processing a specially crafted IFF/ILBM image file, the plugin does not properly validate the HAM row size and improperly handles cases where the number of color planes (nPlanes) is zero. This causes a row size mismatch that bypasses memory bounds checking, resulting in heap out-of-bounds reads. This issue can result in an application crash, leading to a denial of service or a limited information disclosure of heap memory contents.

## Remediation

- workaround: To mitigate this vulnerability, do not open IFF/ILBM files from untrusted sources with GIMP. (source: CNA: redhat)

## Affected products and versions

- GNOME / GIMP (gimp): ≥ 3.0.0; < * (affected, semver). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 6 (gimp): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (gimp): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (gimp:2.8/gimp): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (gimp): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 6.1 (medium); CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 0.18% as of 2026-11-05; percentile 8.19%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-125

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/security/cve/CVE-2026-82324 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2525609 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://gitlab.gnome.org/GNOME/gimp/-/work_items/16584 (CNA: redhat)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-82324; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-82324; retrieved 2026-11-06; source updated Not reported

Revision: 88a5b2ec16cd30f0b51feedb684255d845d3f6b45299b7844e68f5acc509a8b2

Canonical: https://y2.dev/cve/CVE-2026-82324

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