Bug 2494480

Summary: CVE-2026-46599 cliphist: golang.org/x/image/tiff: Denial of Service via crafted PackBits-compressed data [fedora-all]
Product: [Fedora] Fedora Reporter: jkelly <jkelly>
Component: cliphistAssignee: Neal Gompa <ngompa13>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 45CC: go-sig, miracle-sig, ngompa13
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["94db21c7-8727-46fb-a749-a10327466698"]}
Fixed In Version: Doc Type: ---
Doc Text:
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Documentation: --- CRM:
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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 16:05:41 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 Aoife Moloney 2026-08-17 15:05:18 UTC 
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.