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-rw-r--r--src/evaluate.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/evaluate.c b/src/evaluate.c
index 3b366166..68cfd776 100644
--- a/src/evaluate.c
+++ b/src/evaluate.c
@@ -3188,6 +3188,11 @@ static int stmt_evaluate_payload(struct eval_ctx *ctx, struct stmt *stmt)
payload_byte_size = div_round_up(payload->len + extra_len,
BITS_PER_BYTE);
+ if (payload_byte_size > sizeof(data))
+ return expr_error(ctx->msgs, stmt->payload.expr,
+ "uneven load cannot span more than %u bytes, got %u",
+ sizeof(data), payload_byte_size);
+
if (need_csum && payload_byte_size & 1) {
payload_byte_size++;