* KOSPI rises, foreigners net buyers

* Korean won little changed against dollar

* South Korea benchmark bond yield rises

SEOUL, Aug 6 (Reuters) - Round-up of South Korean financial markets:

** South Korean shares rose more than 4% on Tuesday, rebounding from a 6-1/2-month low hit in the previous session in the market's worst sell-off since late 2008, as authorities vowed measures to stabilise markets.

** The won was steady, while the benchmark bond yield rose.

** The benchmark KOSPI rose 106.56 points, or 4.36%, to 2,548.11 by 0044 GMT.

** On Monday, the KOSPI dropped 8.8% to its lowest level since mid-January, as tech stocks slumped amid U.S. recession fears.

** "A technical rebound is possible as recent declines were excessive even from a conservative perspective," said Han Ji-young, an analyst at Kiwoom Securities.

** U.S. stock index futures rose in Asian trading hours on Tuesday, after the benchmark indexes dropped 3% on Monday. Japan's Nikkei jumped 8%, after posting its worst session since the 1987 Black Monday crash in the last session.

** Sidecar trading curbs were activated on the benchmark KOSPI index and the junior KOSDAQ index soon after the market opened, as index futures rose sharply.

** South Korea's finance minister said authorities would take market stabilising measures in a swift manner in the case of excessive volatility.

** Among index heavyweights, chipmaker Samsung Electronics rose 3.92% and peer SK Hynix gained 5.12%, while battery maker LG Energy Solution climbed 3.26%.

** Of the total 933 traded issues, 875 shares advanced, while 50 declined.

** Foreigners were net buyers of shares worth 134.3 billion won ($98.20 million) on the main board.

** The won was quoted at 1,369.5 per dollar on the onshore settlement platform, 0.04% higher than its previous close.

** The most liquid three-year Korean treasury bond yield rose by 8.6 basis points to 2.891%, while the benchmark 10-year yield rose by 9.2 basis points to 2.955%. ($1 = 1,367.6100 won) (Reporting by Jihoon Lee; Editing by Rashmi Aich)