Stock market today: Dow, S&P 500, Nasdaq futures slip amid rising oil prices

US stock futures slipped on Tuesday as rising oil prices and inflation jitters took focus at the start of the holiday-shortened week.Futures on the Dow Jones Industrial Average (YM=F) declined by 0.7%, while those on the S&P 500 (ES=F) fell 0.2%. Contracts for the Nasdaq-100 (NQ=F) rose just above the flatline as investors eyed inflation data and Oracle earnings later this week.Rising oil prices put pressure on markets as Iran said it was close to a deal with Oman to manage traffic through the Strait of Hormuz. Brent crude oil futures (BZ=F), the global benchmark, crept toward $100 per barrel, while US benchmark WTI crude (CL=F) neared $93 per barrel. Fears of an ongoing war in the Middle East have revived angst about inflation and a potential Federal Reserve rate hike this month, particularly after Friday's blowout jobs report showed strong job gains in August. Investors are bracing for a fresh Consumer Price Index reading on Friday, which will indicate whether inflation is moving back down toward the Fed's 2% goal or whether it remains a thorn in the central bank's — and consumers' — side.On the earnings calendar, Oracle (ORCL) earnings are the highlight this week. But first, GameStop (GME) reports on Tuesday.