fix: 0.50.14 patch

CHANGELOG.md

@@ -36,7 +36,9 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 # Changelog
 
-## [Unreleased]
+## [v0.50.14](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.50.14) - 2025-07-08
+
+### Bug Fixes
 
 * (baseapp) [#21979](https://github.com/cosmos/cosmos-sdk/pull/21979) Create CheckTxHandler to allow extending the logic of CheckTx.
 * (baseapp) [#24074](https://github.com/cosmos/cosmos-sdk/pull/24074) Use CometBFT's ComputeProtoSizeForTxs in defaultTxSelector.SelectTxForProposal for consistency.

RELEASE_NOTES.md

@@ -1,16 +1,15 @@
-# Cosmos SDK v0.50.12 Release Notes
-
-💬 [**Release Discussion**](https://github.com/orgs/cosmos/discussions/58)
+# Cosmos SDK v0.50.14 Release Notes
 
 ## 🚀 Highlights
 
-This patch release fixes [GHSA-x5vx-95h7-rv4p](https://github.com/cosmos/cosmos-sdk/security/advisories/GHSA-x5vx-95h7-rv4p).
-It resolves a `x/group` module issue that can halt chain when handling a malicious proposal.
-Only users of the `x/group` module are affected by this issue.
+This patch release fixes [GHSA-p22h-3m2v-cmgh](https://github.com/cosmos/cosmos-sdk/security/advisories/GHSA-p22h-3m2v-cmgh).
+It resolves a `x/distribution` module issue that can halt chains when the historical rewards pool overflows.
+Chains using the `x/distribution` module are affected by this issue.
+
+We recommended upgrading to this patch release as soon as possible.
 
-We recommended to upgrade to this patch release as soon as possible.
-When upgrading from <= v0.50.11, please use a chain upgrade to ensure that 2/3 of the validator power upgrade to v0.50.12.
+This patch is state-breaking; chains must perform a coordinated upgrade. This patch cannot be applied in a rolling upgrade.
 
 ## 📝 Changelog
 
-Check out the [changelog](https://github.com/cosmos/cosmos-sdk/blob/v0.50.12/CHANGELOG.md) for an exhaustive list of changes, or [compare changes](https://github.com/cosmos/cosmos-sdk/compare/v0.50.11...v0.50.12) from the last release.
+Check out the [changelog](https://github.com/cosmos/cosmos-sdk/blob/v0.50.14/CHANGELOG.md) for an exhaustive list of changes or [compare changes](https://github.com/cosmos/cosmos-sdk/compare/v0.50.13...v0.50.14) from the last release.

tests/integration/distribution/keeper/msg_server_test.go

@@ -1,18 +1,20 @@
 package keeper_test
 
 import (
+	"encoding/hex"
 	"fmt"
 	"testing"
 
-	cmtabcitypes "github.com/cometbft/cometbft/abci/types"
-	cmtproto "github.com/cometbft/cometbft/api/cometbft/types/v1"
-	"github.com/stretchr/testify/require"
-	"gotest.tools/v3/assert"
-
 	"cosmossdk.io/core/appmodule"
 	"cosmossdk.io/log"
 	"cosmossdk.io/math"
 	storetypes "cosmossdk.io/store/types"
+	cmtabcitypes "github.com/cometbft/cometbft/abci/types"
+	cmtproto "github.com/cometbft/cometbft/api/cometbft/types/v1"
+	"github.com/cosmos/cosmos-sdk/crypto/keys/ed25519"
+	cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
+	"github.com/stretchr/testify/require"
+	"gotest.tools/v3/assert"
 
 	"github.com/cosmos/cosmos-sdk/codec"
 	addresscodec "github.com/cosmos/cosmos-sdk/codec/address"
@@ -30,6 +32,7 @@ import (
 	"github.com/cosmos/cosmos-sdk/x/distribution"
 	distrkeeper "github.com/cosmos/cosmos-sdk/x/distribution/keeper"
 	distrtypes "github.com/cosmos/cosmos-sdk/x/distribution/types"
+	minttypes "github.com/cosmos/cosmos-sdk/x/mint/types"
 	"github.com/cosmos/cosmos-sdk/x/staking"
 	stakingkeeper "github.com/cosmos/cosmos-sdk/x/staking/keeper"
 	stakingtestutil "github.com/cosmos/cosmos-sdk/x/staking/testutil"
@@ -81,6 +84,7 @@ func initFixture(t testing.TB) *fixture {
 
 	maccPerms := map[string][]string{
 		distrtypes.ModuleName:          {authtypes.Minter},
+		minttypes.ModuleName:           {authtypes.Minter},
 		stakingtypes.BondedPoolName:    {authtypes.Burner, authtypes.Staking},
 		stakingtypes.NotBondedPoolName: {authtypes.Burner, authtypes.Staking},
 	}
@@ -144,10 +148,18 @@ func initFixture(t testing.TB) *fixture {
 	})
 
 	sdkCtx := sdk.UnwrapSDKContext(integrationApp.Context())
+	require.NoError(t, stakingKeeper.SetParams(sdkCtx, stakingtypes.DefaultParams()))
+
+	stakingKeeper.SetHooks(
+		stakingtypes.NewMultiStakingHooks(
+			distrKeeper.Hooks(), // Needed for reward distribution on staking events
+		),
+	)
 
 	// Register MsgServer and QueryServer
 	distrtypes.RegisterMsgServer(integrationApp.MsgServiceRouter(), distrkeeper.NewMsgServerImpl(distrKeeper))
 	distrtypes.RegisterQueryServer(integrationApp.QueryHelper(), distrkeeper.NewQuerier(distrKeeper))
+	stakingtypes.RegisterMsgServer(integrationApp.MsgServiceRouter(), stakingkeeper.NewMsgServerImpl(stakingKeeper))
 
 	return &fixture{
 		app:           integrationApp,
@@ -996,3 +1008,108 @@ func TestMsgDepositValidatorRewardsPool(t *testing.T) {
 		})
 	}
 }
+
+func TestCannotDepositIfRewardPoolFull(t *testing.T) {
+	f := initFixture(t)
+	err := f.distrKeeper.FeePool.Set(f.sdkCtx, distrtypes.FeePool{
+		CommunityPool: sdk.NewDecCoins(sdk.DecCoin{Denom: sdk.DefaultBondDenom, Amount: math.LegacyNewDec(10000)}),
+	})
+	assert.NilError(t, err)
+	assert.NilError(t, f.distrKeeper.Params.Set(f.sdkCtx, distrtypes.DefaultParams()))
+	_, err = f.distrKeeper.FeePool.Get(f.sdkCtx)
+	assert.NilError(t, err)
+
+	ctx := f.sdkCtx.WithIsCheckTx(false).WithBlockHeight(1)
+	populateValidators(t, f)
+
+	valPubKey := newPubKey("0B485CFC0EECC619440448436F8FC9DF40566F2369E72400281454CB552AFB53")
+	operatorAddr := sdk.ValAddress(valPubKey.Address())
+
+	tstaking := stakingtestutil.NewHelper(t, ctx, f.stakingKeeper)
+
+	assert.NilError(t, f.bankKeeper.MintCoins(f.sdkCtx, minttypes.ModuleName, sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, initAmt))))
+	assert.NilError(t, f.bankKeeper.SendCoinsFromModuleToAccount(f.sdkCtx, minttypes.ModuleName, sdk.AccAddress(operatorAddr), sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, initAmt))))
+
+	tstaking.Commission = stakingtypes.NewCommissionRates(math.LegacyZeroDec(), math.LegacyZeroDec(), math.LegacyZeroDec())
+	selfDelegation := math.OneInt()
+	tstaking.CreateValidator(operatorAddr, valPubKey, selfDelegation, true)
+
+	_, err = f.stakingKeeper.EndBlocker(f.sdkCtx)
+	assert.NilError(t, err)
+
+	maxSupply, ok := math.NewIntFromString("105792089237316195423570985008687907853269984665640564039457584007913129639934")
+	assert.Assert(t, ok)
+
+	maxCoins := sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, maxSupply))
+	assert.NilError(t, f.bankKeeper.MintCoins(f.sdkCtx, minttypes.ModuleName, maxCoins))
+	assert.NilError(t, f.bankKeeper.SendCoinsFromModuleToAccount(f.sdkCtx, minttypes.ModuleName, sdk.AccAddress(operatorAddr), maxCoins))
+
+	fundValMsg := &distrtypes.MsgDepositValidatorRewardsPool{
+		Depositor:        sdk.AccAddress(operatorAddr).String(),
+		ValidatorAddress: operatorAddr.String(),
+		Amount:           maxCoins,
+	}
+
+	// fund the rewards pool. this will set the current rewards.
+	_, err = f.app.RunMsg(
+		fundValMsg,
+		integration.WithAutomaticFinalizeBlock(),
+		integration.WithAutomaticCommit(),
+	)
+	assert.NilError(t, err)
+
+	// now we delegate to increment the validator period, setting the current rewards to the previous.
+	power := int64(1)
+	delegationAmount := sdk.TokensFromConsensusPower(power, sdk.DefaultPowerReduction)
+	delMsg := stakingtypes.NewMsgDelegate(sdk.AccAddress(operatorAddr).String(), operatorAddr.String(), sdk.NewCoin(sdk.DefaultBondDenom, delegationAmount))
+	_, err = f.app.RunMsg(
+		delMsg,
+		integration.WithAutomaticFinalizeBlock(),
+		integration.WithAutomaticCommit(),
+	)
+	assert.NilError(t, err)
+
+	// this should fail since this amount cannot be added to the previous amount without overflowing.
+	_, err = f.app.RunMsg(
+		fundValMsg,
+		integration.WithAutomaticFinalizeBlock(),
+		integration.WithAutomaticCommit(),
+	)
+	assert.ErrorContains(t, err, "unable to deposit coins")
+}
+
+var (
+	pubkeys = []cryptotypes.PubKey{
+		newPubKey("0B485CFC0EECC619440448436F8FC9DF40566F2369E72400281454CB552AFB50"),
+		newPubKey("0B485CFC0EECC619440448436F8FC9DF40566F2369E72400281454CB552AFB51"),
+		newPubKey("0B485CFC0EECC619440448436F8FC9DF40566F2369E72400281454CB552AFB52"),
+	}
+
+	valAddresses = []sdk.ValAddress{
+		sdk.ValAddress(pubkeys[0].Address()),
+		sdk.ValAddress(pubkeys[1].Address()),
+		sdk.ValAddress(pubkeys[2].Address()),
+	}
+
+	initAmt   = sdk.TokensFromConsensusPower(1000000, sdk.DefaultPowerReduction)
+	initCoins = sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, initAmt))
+)
+
+func populateValidators(t assert.TestingT, f *fixture) {
+	totalSupplyAmt := initAmt.MulRaw(int64(len(valAddresses)))
+	totalSupply := sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, totalSupplyAmt))
+	assert.NilError(t, f.bankKeeper.MintCoins(f.sdkCtx, distrtypes.ModuleName, totalSupply))
+
+	for _, addr := range valAddresses {
+		assert.NilError(t, f.bankKeeper.SendCoinsFromModuleToAccount(f.sdkCtx, distrtypes.ModuleName, (sdk.AccAddress)(addr), initCoins))
+	}
+}
+
+func newPubKey(pk string) (res cryptotypes.PubKey) {
+	pkBytes, err := hex.DecodeString(pk)
+	if err != nil {
+		panic(err)
+	}
+	pubkey := &ed25519.PubKey{Key: pkBytes}
+	return pubkey
+}

x/distribution/keeper/msg_server.go

@@ -2,6 +2,7 @@ package keeper
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/hashicorp/go-metrics"
 
@@ -211,6 +212,36 @@ func (k msgServer) DepositValidatorRewardsPool(ctx context.Context, msg *types.M
 		return nil, err
 	}
 
+	// make sure the reward pool isn't already full.
+	if !validator.GetTokens().IsZero() {
+		rewards, err := k.GetValidatorCurrentRewards(ctx, valAddr)
+		if err != nil {
+			return nil, err
+		}
+		current := rewards.Rewards
+		historical, err := k.GetValidatorHistoricalRewards(ctx, valAddr, rewards.Period-1)
+		if err != nil {
+			return nil, err
+		}
+		if !historical.CumulativeRewardRatio.IsZero() {
+			rewardRatio := historical.CumulativeRewardRatio
+			var panicErr error
+			func() {
+				defer func() {
+					if r := recover(); r != nil {
+						panicErr = fmt.Errorf("deposit is too large: %v", r)
+					}
+				}()
+				rewardRatio.Add(current...)
+			}()
+
+			// Check if the deferred function caught a panic
+			if panicErr != nil {
+				return nil, fmt.Errorf("unable to deposit coins: %w", panicErr)
+			}
+		}
+	}
+
 	logger := k.Logger(ctx)
 	logger.Info(
 		"transferred from rewards to validator rewards pool",