Bug 2483473 (CVE-2026-46599)

Summary:	CVE-2026-46599 golang.org/x/image/tiff: golang.org/x/image/tiff: Denial of Service via crafted PackBits-compressed data
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aazores, alcohan, cmah, eaguilar, ebaron, gparvin, jbalunas, jcantril, jolong, pahickey, pjindal, rhaigner, rojacob
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the `golang.org/x/image/tiff` package's TIFF decoder. This vulnerability occurs because the decoder does not properly limit the size of PackBits-compressed data. A remote attacker could exploit this by providing a maliciously-crafted image, leading to the decoder processing excessive amounts of data. This can result in a Denial of Service (DoS) due to resource exhaustion, even with a small input image.	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:
Bug Depends On:	2494478, 2494480, 2494482, 2494477, 2494479, 2494481
Bug Blocks:

Description OSIDB Bzimport 2026-05-29 21:01:54 UTC

The TIFF decoder does not place a limit on the size of PackBits-compressed data. A maliciously-crafted image can exploit this to cause a small image (both in terms of pixel width/height and encoded size) to make the decoder decode large amounts of compressed data.

Comment 4 errata-xmlrpc 2026-07-29 19:54:30 UTC

This issue has been addressed in the following products:

  Cryostat 4 on RHEL 9

Via RHSA-2026:48151 https://access.redhat.com/errata/RHSA-2026:48151