Patch "vsock/vmci: Clear the vmci transport packet properly when initializing it" has been added to the 5.4-stable tree

Patch "vsock/vmci: Clear the vmci transport packet properly when initializing it" has been added to the 5.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    vsock/vmci: Clear the vmci transport packet properly when initializing it

to the 5.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     vsock-vmci-clear-the-vmci-transport-packet-properly-when-initializing-it.patch
and it can be found in the queue-5.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


From 223e2288f4b8c262a864e2c03964ffac91744cd5 Mon Sep 17 00:00:00 2001
From: HarshaVardhana S A <harshavardhana.sa@broadcom.com>
Date: Tue, 1 Jul 2025 14:22:54 +0200
Subject: vsock/vmci: Clear the vmci transport packet properly when initializing it

From: HarshaVardhana S A <harshavardhana.sa@broadcom.com>

commit 223e2288f4b8c262a864e2c03964ffac91744cd5 upstream.

In vmci_transport_packet_init memset the vmci_transport_packet before
populating the fields to avoid any uninitialised data being left in the
structure.

Cc: Bryan Tan <bryan-bt.tan@broadcom.com>
Cc: Vishnu Dasa <vishnu.dasa@broadcom.com>
Cc: Broadcom internal kernel review list
Cc: Stefano Garzarella <sgarzare@redhat.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Simon Horman <horms@kernel.org>
Cc: virtualization@lists.linux.dev
Cc: netdev@vger.kernel.org
Cc: stable <stable@kernel.org>
Signed-off-by: HarshaVardhana S A <harshavardhana.sa@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixes: d021c344051a ("VSOCK: Introduce VM Sockets")
Acked-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://patch.msgid.link/20250701122254.2397440-1-gregkh@linuxfoundation.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/vmw_vsock/vmci_transport.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/vmw_vsock/vmci_transport.c
+++ b/net/vmw_vsock/vmci_transport.c
@@ -125,6 +125,8 @@ vmci_transport_packet_init(struct vmci_t
 			   u16 proto,
 			   struct vmci_handle handle)
 {
+	memset(pkt, 0, sizeof(*pkt));
+
 	/* We register the stream control handler as an any cid handle so we
 	 * must always send from a source address of VMADDR_CID_ANY
 	 */
@@ -137,8 +139,6 @@ vmci_transport_packet_init(struct vmci_t
 	pkt->type = type;
 	pkt->src_port = src->svm_port;
 	pkt->dst_port = dst->svm_port;
-	memset(&pkt->proto, 0, sizeof(pkt->proto));
-	memset(&pkt->_reserved2, 0, sizeof(pkt->_reserved2));
 
 	switch (pkt->type) {
 	case VMCI_TRANSPORT_PACKET_TYPE_INVALID:


Patches currently in stable-queue which might be from harshavardhana.sa@broadcom.com are

queue-5.4/vsock-vmci-clear-the-vmci-transport-packet-properly-when-initializing-it.patch