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fix: verify mint and owner in idempotent ATA early return #2255

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fix: verify mint and owner in idempotent ATA early return #2255

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f40e048
fix: verify mint and owner in idempotent ATA early return
ananas-block Feb 6, 2026
331d3a9
chore: format
ananas-block Feb 6, 2026
cf8c62b
fix: use pubkey_eq for idempotent ATA mint/owner checks
ananas-block Feb 9, 2026
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14 changes: 13 additions & 1 deletion programs/compressed-token/program/src/ctoken/create_ata.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@ use borsh::BorshDeserialize;
use light_account_checks::AccountIterator;
use light_program_profiler::profile;
use light_token_interface::instructions::create_associated_token_account::CreateAssociatedTokenAccountInstructionData;
use pinocchio::{account_info::AccountInfo, instruction::Seed};
use pinocchio::{account_info::AccountInfo, instruction::Seed, pubkey::pubkey_eq};
use spl_pod::solana_msg::msg;

use crate::{
Expand Down Expand Up @@ -67,6 +67,18 @@ fn process_create_associated_token_account_with_mode<const IDEMPOTENT: bool>(
if IDEMPOTENT {
validate_ata_derivation(associated_token_account, owner_bytes, mint_bytes, bump)?;
if associated_token_account.is_owned_by(&crate::LIGHT_CPI_SIGNER.program_id) {
// Verify stored mint and owner match the requested values
let ctoken = light_token_interface::state::Token::from_account_info_checked(
associated_token_account,
)?;
if !pubkey_eq(ctoken.mint.array_ref(), mint_bytes) {
msg!("Idempotent ATA: mint mismatch");
return Err(anchor_compressed_token::ErrorCode::MintMismatch.into());
}
if !pubkey_eq(ctoken.owner.array_ref(), owner_bytes) {
msg!("Idempotent ATA: owner mismatch");
return Err(anchor_compressed_token::ErrorCode::OwnerMismatch.into());
}
return Ok(());
}
}
Expand Down