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freerdp: patch CVE-2026-23530

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Details: https://nvd.nist.gov/vuln/detail/CVE-2026-23530

The related Github advisory[1] contains an amalysis of the
vulenrability, describing the issue and the root cause also.

Backported the commit that implemented the solution described
in the advisory.

[1]: https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-r4hv-852m-fq7p

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
This commit is contained in:
Gyorgy Sarvari 2026-02-24 18:04:46 +01:00 committed by Khem Raj
parent 64c630c0cb
commit df8905be0f
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GPG Key ID: BB053355919D3314
2 changed files with 29 additions and 0 deletions
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28
meta-oe/recipes-support/freerdp/freerdp/CVE-2026-23530.patch Normal file
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@ -0,0 +1,28 @@
From 6f61d18e9707cebe9d7d64346c66da780c7094c4 Mon Sep 17 00:00:00 2001
From: akallabeth <akallabeth@posteo.net>
Date: Thu, 15 Jan 2026 12:02:02 +0100
Subject: [PATCH] fix decoder length checks
CVE: CVE-2026-23530
Upstream-Status: Backport [https://github.com/FreeRDP/FreeRDP/commit/1bab198a2edd0d0e6e1627d21a433151ea190500]
Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
---
libfreerdp/codec/planar.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libfreerdp/codec/planar.c b/libfreerdp/codec/planar.c
index fe27011e1..1cb2e22bc 100644
--- a/libfreerdp/codec/planar.c
+++ b/libfreerdp/codec/planar.c
@@ -616,6 +616,11 @@ BOOL planar_decompress(BITMAP_PLANAR_CONTEXT* planar, const BYTE* pSrcData, UINT
WINPR_ASSERT(planar);
WINPR_ASSERT(prims);
+ if (planar->maxWidth < nSrcWidth)
+ return FALSE;
+ if (planar->maxHeight < nSrcHeight)
+ return FALSE;
+
if (nDstStep <= 0)
nDstStep = nDstWidth * GetBytesPerPixel(DstFormat);

1
meta-oe/recipes-support/freerdp/freerdp_2.11.7.bb
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@ -27,6 +27,7 @@ SRC_URI = "git://github.com/FreeRDP/FreeRDP.git;branch=stable-2.0;protocol=https
file://CVE-2026-22854.patch \
file://CVE-2026-22855.patch \
file://CVE-2026-22852.patch \
file://CVE-2026-23530.patch \
"