Bug 2497431 (CVE-2026-58384)

Summary:	CVE-2026-58384 gimp: gimp: Integer overflow in read_RLE_channel()
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 PSD parser. An integer overflow in read_RLE_channel() can cause an undersized heap allocation for the RLE row-length table, after which subsequent per-row writes corrupt heap memory. This could lead to memory corruption, potentially resulting in 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 18:55:05 UTC

Integer overflow in GIMP's PSD parser. In read_RLE_channel() in psd-load.c, the allocation for rle_pack_len uses g_malloc (lyr_chn->rows * 4) with unchecked arithmetic. A crafted PSD can overflow the allocation size calculation and desynchronize it from the subsequent per-row writes, causing heap memory corruption.

- Function: read_RLE_channel()
- File: plug-ins/file-psd/psd-load.c:1843-1865
- Fix: https://gitlab.gnome.org/GNOME/gimp/-/commit/da29e217
- Upstream issue: https://gitlab.gnome.org/GNOME/gimp/-/issues/16216
- Acknowledgment: bb1abu

Comment 1 errata-xmlrpc 2026-07-16 07:50:50 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:40751 https://access.redhat.com/errata/RHSA-2026:40751