Bug 2494479

Summary: CVE-2026-46599 golang-x-image: golang.org/x/image/tiff: Denial of Service via crafted PackBits-compressed data [fedora-all]
Product: [Fedora] Fedora Reporter: jkelly <jkelly>
Component: golang-x-imageAssignee: Alejandro Sáez Morollón <asm>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: asm, go-sig
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["94db21c7-8727-46fb-a749-a10327466698"]}
Fixed In Version: golang-x-image-0.44.0-1.fc45 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-07-21 12:04:59 UTC 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:    
Bug Blocks: 2483473    

Description jkelly 2026-06-29 16:05:36 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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 1 Fedora Update System 2026-07-21 12:02:16 UTC 
FEDORA-2026-3e4b43a4cd (golang-x-image-0.44.0-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-3e4b43a4cd
Comment 2 Fedora Update System 2026-07-21 12:04:59 UTC 
FEDORA-2026-3e4b43a4cd (golang-x-image-0.44.0-1.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.