Bug 2390086 (CVE-2025-9300)

Summary: CVE-2025-9300 libsixel: buffer overflow in img2sixel when processing crafted image files
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the libsixel library. An out-of-bounds read can be triggered when a specially crafted file is processed with the img2sixel program, specifically during palette debugging operations. This issue can cause an application crash and result in a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2390150, 2390151    
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Description OSIDB Bzimport 2025-08-21 14:01:37 UTC 
A vulnerability was found in saitoha libsixel up to 1.10.3. Affected by this issue is the function sixel_debug_print_palette of the file src/encoder.c of the component img2sixel. The manipulation results in stack-based buffer overflow. The attack must be initiated from a local position. The exploit has been made public and could be used. The patch is identified as 316c086e79d66b62c0c4bc66229ee894e4fdb7d1. Applying a patch is advised to resolve this issue.