CVE-2026-82324
Gimp: heap out-of-bounds reads in iff/ilbm loader from ham row size mismatch and nplanes=0
What happened?
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.
Affected software and versions
| Software | Version information | Fixed version |
|---|---|---|
| gimpGNOME | affected: 3.0.0 to < * | See vendor advisory |
| gimpRed Hat | Default status: unaffected | See vendor advisory |
| gimpRed Hat | Default status: unaffected | See vendor advisory |
| gimp:2.8/gimpRed Hat | Default status: unaffected | See vendor advisory |
| gimpRed Hat | Default status: affected | See vendor advisory |
Version information comes from the source record and can include unaffected products and exceptions. Distribution packages may contain backported fixes: an older upstream version alone does not prove a server is affected.
Is it being exploited?
This CVE was not listed in the CISA catalogue at our last retrieval. This does not establish that exploitation is absent.
How to respond
- Confirm the product, installed package version, and any configuration requirements in the vendor advisory.
- Follow the vendor’s remediation or workaround guidance in the references below. Structured fixed-version data is unavailable here; the publisher’s description may include a fix or workaround.
- Restart affected services if required, then verify the running version. Known exploitation may warrant investigation as well as patching.