Bug 2496166 (CVE-2026-58381)

Summary:	CVE-2026-58381 gimp: gimp: Double-free in read_layer_block()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
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 PSP file format parser. A double-free condition occurs in the read_layer_block() function when processing a specially crafted PSP file. This could allow an attacker to cause memory corruption, potentially leading 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 2026-07-01 20:22:45 UTC

A double-free vulnerability exists in GIMP's Paint Shop Pro (PSP) file format parser. In read_layer_block() in file-psp.c, the variable name is allocated, used, and freed each loop iteration. On the error path in the 2nd iteration, fread fails before g_malloc for name, so the stale pointer from iteration 1 is freed again via g_free(name).

- Function: read_layer_block()
- File: plug-ins/common/file-psp.c:1908-2321
- Fix: https://gitlab.gnome.org/GNOME/gimp/-/commit/b22e147b
- Upstream issue: https://gitlab.gnome.org/GNOME/gimp/-/issues/16207
- Acknowledgment: bb1abu