7.3
High
CVE-2026-42169 Gimp: gimp apng loader heap-buffer-overflow when fctl width exceeds ihdr width (file-png.c)
Description
A heap-buffer-overflow vulnerability exists in the APNG (Animated PNG) file loader of GIMP. This flaw occurs when the `fcTL` width exceeds the `IHDR` width, leading to pixel data being written past the end of a heap allocation. Additionally, a heap-based buffer overflow exists in the DDS plug-in due to a BPP mismatch in the `load_layer()` function. Both vulnerabilities can be triggered by opening a specially crafted image file, potentially leading to code execution.
CVSS 3.1 detail
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:HExploitable with local access to the machine, with an ordinary account and if a user takes an action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- Interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 6 | Versions not published | |
| Red Hat Enterprise Linux 7 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat Enterprise Linux 9.6 Extended Update Support | Versions not published | |
| Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | Versions not published | |
| Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | Versions not published |
References
- RHSA-2026:50817 access.redhat.com
- RHSA-2026:73768 access.redhat.com
- RHSA-2026:80509 access.redhat.com
- RHSA-2026:93589 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2461725 bugzilla.redhat.com
Timeline
- Published
- Last modified
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