edk2/SOURCES/edk2-NetworkPkg-Dhcp6Dxe-Packet-Length-is-not-updated-bef.patch

70 lines
2.1 KiB
Diff

From 649fe647114ca5dee84b0c55106ee58a9703984f Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Fri, 16 Feb 2024 10:48:05 -0500
Subject: [PATCH 15/15] NetworkPkg: Dhcp6Dxe: Packet-Length is not updated
before appending
RH-Author: Jon Maloy <jmaloy@redhat.com>
RH-MergeRequest: 56: Pixiefail issues in NetworkPkg package
RH-Jira: RHEL-21840 RHEL-21844 RHEL-21846 RHEL-21848 RHEL-21850 RHEL-21852
RH-Acked-by: Gerd Hoffmann <None>
RH-Acked-by: Oliver Steffen <osteffen@redhat.com>
RH-Commit: [15/15] bc7ef287311bb3f757bc26f8921875566bcb5917
JIRA: https://issues.redhat.com/browse/RHEL-21840
CVE: CVE-2023-45229
Upstream: Merged
commit 75deaf5c3c0d164c61653258c331151241bb69d8
Author: Doug Flick <dougflick@microsoft.com>
Date: Tue Feb 13 10:46:02 2024 -0800
NetworkPkg: Dhcp6Dxe: Packet-Length is not updated before appending
In order for Dhcp6AppendIaAddrOption (..) to safely append the IA
Address option, the Packet-Length field must be updated before appending
the option.
Cc: Saloni Kasbekar <saloni.kasbekar@intel.com>
Cc: Zachary Clark-williams <zachary.clark-williams@intel.com>
Signed-off-by: Doug Flick [MSFT] <doug.edk2@gmail.com>
Reviewed-by: Saloni Kasbekar <saloni.kasbekar@intel.com>
Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
---
NetworkPkg/Dhcp6Dxe/Dhcp6Utility.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/NetworkPkg/Dhcp6Dxe/Dhcp6Utility.c b/NetworkPkg/Dhcp6Dxe/Dhcp6Utility.c
index e172ffc2a2..c23eff8766 100644
--- a/NetworkPkg/Dhcp6Dxe/Dhcp6Utility.c
+++ b/NetworkPkg/Dhcp6Dxe/Dhcp6Utility.c
@@ -948,6 +948,11 @@ Dhcp6AppendIaOption (
*PacketCursor += sizeof (T2);
}
+ //
+ // Update the packet length
+ //
+ Packet->Length += BytesNeeded;
+
//
// Fill all the addresses belong to the Ia
//
@@ -959,11 +964,6 @@ Dhcp6AppendIaOption (
}
}
- //
- // Update the packet length
- //
- Packet->Length += BytesNeeded;
-
//
// Fill the value of Ia option length
//
--
2.39.3