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freerdp3: patch CVE-2026-55193

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Details:
https://nvd.nist.gov/vuln/detail/cve-2026-55193

Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
Signed-off-by: Anuj Mittal <anuj.mittal@oss.qualcomm.com>
This commit is contained in:
Ankur Tyagi authored and Anuj Mittal committed 2026-09-15 10:13:44 +05:30
1 parent e555fd3307
commit 1d846e479b
2 files changed
+38
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meta-oe/recipes-support/freerdp/freerdp3/CVE-2026-55193.patch
+37
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@@ -0,0 +1,37 @@
From b0b560b3c89e46107092cc8d1abe61ae4c4e7c4d Mon Sep 17 00:00:00 2001
From: Armin Novak <armin.novak@thincast.com>
Date: Thu, 11 Jun 2026 08:31:09 +0200
Subject: [PATCH] [core,gateway] rpc header max fragment size checks
(cherry picked from commit a863ef1cf1cdabf9019280e5658f806e73bb50e8)
CVE: CVE-2026-55193
Upstream-Status: Backport [https://github.com/FreeRDP/FreeRDP/commit/a863ef1cf1cdabf9019280e5658f806e73bb50e8]
Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
---
libfreerdp/core/gateway/rpc_bind.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/libfreerdp/core/gateway/rpc_bind.c b/libfreerdp/core/gateway/rpc_bind.c
index cc670d14f..3a055eb50 100644
--- a/libfreerdp/core/gateway/rpc_bind.c
+++ b/libfreerdp/core/gateway/rpc_bind.c
@@ -342,6 +342,17 @@ BOOL rpc_recv_bind_ack_pdu(rdpRpc* rpc, wStream* s)
WLog_DBG(TAG, header.common.ptype == PTYPE_BIND_ACK ? "Receiving BindAck PDU"
: "Receiving AlterContextResp PDU");
+ const UINT16 MAX_VALID_FRAG = 0x0FF8;
+ if ((header.bind_ack.max_xmit_frag > MAX_VALID_FRAG) ||
+ (header.bind_ack.max_recv_frag > MAX_VALID_FRAG))
+ {
+ WLog_ERR(TAG,
+ "bind_ack: invalid fragment size: max_xmit_frag=%" PRIu16
+ ", max_recv_frag=%" PRIu16 ", maximum=%" PRIu16,
+ header.bind_ack.max_xmit_frag, header.bind_ack.max_recv_frag, MAX_VALID_FRAG);
+ goto fail;
+ }
+
rpc->max_recv_frag = header.bind_ack.max_xmit_frag;
rpc->max_xmit_frag = header.bind_ack.max_recv_frag;
meta-oe/recipes-support/freerdp/freerdp3_3.24.2.bb
+1
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@@ -15,6 +15,7 @@ SRC_URI = "git://github.com/FreeRDP/FreeRDP.git;nobranch=1;protocol=https;tag=${
file://CVE-2026-40254-2.patch \
file://CVE-2026-55191.patch \
file://CVE-2026-55192.patch \
file://CVE-2026-55193.patch \
"