Bug 2538866 (CVE-2026-54633)

Summary:	CVE-2026-54633 podofo: PoDoFo: Information Disclosure and Denial of Service via Crafted PDF
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	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in PoDoFo, a C++ PDF manipulation library. Processing a specially crafted PDF file containing an Indexed color-space image can lead to a heap out-of-bounds read. This vulnerability occurs in the `PdfColorSpaceFilterIndexed::FetchScanLine` function due to insufficient validation of pixel indices and color-space metadata. A remote attacker could exploit this by enticing a user to open a malicious PDF, potentially disclosing sensitive information from adjacent memory or causing the application to crash, resulting in a denial of service.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Bug Depends On:	2539345
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Description OSIDB Bzimport 2026-09-22 20:58:43 UTC

PoDoFo is a C++17 PDF manipulation library. From version 1.0.0 until 1.1.1, processing a crafted PDF with an Indexed color-space image can cause a heap out-of-bounds read in PdfColorSpaceFilterIndexed::FetchScanLine in src/podofo/main/PdfColorSpaceFilter.cpp. PODOFO_INVARIANT does not perform a runtime check, so a pixel index greater than or equal to m_MapSize can address beyond m_lookup. PdfColorSpaceFilterFactory::TryCreateFromObject also validates hival with an incorrect conjunction and no upper bound, allowing malformed Indexed color-space metadata outside the expected range. The resulting read can disclose adjacent heap data or crash the processing application. This issue is fixed in version 1.1.1.