Bug 2497433 (CVE-2026-58386)

Summary:	CVE-2026-58386 gimp: gimp: Stack overflow via VLAs in load_image()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in GIMP's TIM loader. File-controlled width, height, and palette size values are used directly in multiple variable-length array declarations in load_image(), allowing a crafted TIM file to force oversized stack allocations and memory corruption. This could lead to denial of service or arbitrary code execution.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-07-06 18:58:02 UTC

Stack overflow via VLAs in GIMP's TIM loader. In load_image() in file-tim.c, file-controlled width, height, and clut_size values are used directly in several variable-length array declarations on the stack across multiple decode paths. A crafted TIM file can therefore force oversized stack allocations and memory corruption.

- Function: load_image()
- File: plug-ins/common/file-tim.c
- Fix: https://gitlab.gnome.org/GNOME/gimp/-/commit/88a0a895
- Upstream issue: https://gitlab.gnome.org/GNOME/gimp/-/issues/16222
- Acknowledgment: bb1abu