these are the sounds found in most native Malayalam dialects:
there are also sounds not on the chart

Other sounds:
a labio-velar central approximant [w]
aspirated voiceless and voiced labial, dental, retroflex, palatal, and velar stops
long versions of all short vowels, except schwa

In Loan Words from English:
a voiceless labiodental fricative [f]
an open/open-mid low front unrounded vowel

(from: Asher, R.E. and Kumari T.C. 1997. Malayalam. London; New York: Routledge.)