From 8f8942cda98acb43678c0af4d0381505c9b28d11 Mon Sep 17 00:00:00 2001
From: Slyghtning <hieblmi@protonmail.com>
Date: Wed, 13 Nov 2024 20:16:12 +0100
Subject: [PATCH 1/2] routerrpc: fix sendpayment_v2 negative fee limit

---
 lnrpc/marshall_utils.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lnrpc/marshall_utils.go b/lnrpc/marshall_utils.go
index 0dcbe46fa..230fea35b 100644
--- a/lnrpc/marshall_utils.go
+++ b/lnrpc/marshall_utils.go
@@ -23,6 +23,9 @@ var (
 	ErrSatMsatMutualExclusive = errors.New(
 		"sat and msat arguments are mutually exclusive",
 	)
+
+	// ErrNegativeAmt is returned when a negative amount is specified.
+	ErrNegativeAmt = errors.New("amount cannot be negative")
 )
 
 // CalculateFeeLimit returns the fee limit in millisatoshis. If a percentage
@@ -56,6 +59,10 @@ func UnmarshallAmt(amtSat, amtMsat int64) (lnwire.MilliSatoshi, error) {
 		return 0, ErrSatMsatMutualExclusive
 	}
 
+	if amtSat < 0 || amtMsat < 0 {
+		return 0, ErrNegativeAmt
+	}
+
 	if amtSat != 0 {
 		return lnwire.NewMSatFromSatoshis(btcutil.Amount(amtSat)), nil
 	}

From de451d72c720bde81689f996b9a9286ce6562267 Mon Sep 17 00:00:00 2001
From: Slyghtning <hieblmi@protonmail.com>
Date: Thu, 14 Nov 2024 11:39:48 +0100
Subject: [PATCH 2/2] docs: update release notes

---
 docs/release-notes/release-notes-0.19.0.md | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/docs/release-notes/release-notes-0.19.0.md b/docs/release-notes/release-notes-0.19.0.md
index 04092157c..c3048c78c 100644
--- a/docs/release-notes/release-notes-0.19.0.md
+++ b/docs/release-notes/release-notes-0.19.0.md
@@ -28,10 +28,14 @@
   does not contain a payment address.
   
 * [Fixed a bug](https://github.com/lightningnetwork/lnd/pull/9033) where we
-  would not signal an error when trying to bump an non-anchor channel but
+  would not signal an error when trying to bump a non-anchor channel but
   instead report a successful cpfp registration although no fee bumping is
   possible for non-anchor channels anyways.
 
+* [Fixed a bug](https://github.com/lightningnetwork/lnd/pull/9269) where a
+  negative fee limit for `SendPaymentV2` would lead to omitting the fee limit
+  check.
+
 * [Use the required route blinding 
   feature-bit](https://github.com/lightningnetwork/lnd/pull/9143) for invoices 
   containing blinded paths.
@@ -196,6 +200,7 @@ The underlying functionality between those two options remain the same.
 * CharlieZKSmith
 * Elle Mouton
 * George Tsagkarelis
+* hieblmi
 * Oliver Gugger
 * Pins
 * Viktor Tigerström