Bug 2447380 (CVE-2026-31897)

Summary:	CVE-2026-31897 freerdp: FreeRDP has an out-of-bounds read in `freerdp_bitmap_decompress_planar`
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	An out of bounds read flaw has been discovered in FreeRDP. This Out-of-bounds read exists in the `freerdp_bitmap_decompress_planar` function when SrcSize is 0. This flaw may allow an attcker to read of 1 byte from heap memory in some situation. The more common and expected impact is a crash when the read hits an unmapped page.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2447425, 2447429, 2447417
Bug Blocks:

Description OSIDB Bzimport 2026-03-13 18:04:17 UTC

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, there is an out-of-bounds read in freerdp_bitmap_decompress_planar when SrcSize is 0. The function dereferences *srcp (which points to pSrcData) without first verifying that SrcSize >= 1. When SrcSize is 0 and pSrcData is non-NULL, this reads one byte past the end of the source buffer. This vulnerability is fixed in 3.24.0.