Bedding Soviet hero with stomach upset (5)

I believe the answer is:

linen

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'bedding' is the definition.
(I've seen this before)

I don't understand how the remainder of the clue works.

(Other definitions for linen that I've seen before include "Sheets, cloths, napkins etc" , "Cloth made from flax" , "Fabric from the fibres of the flax plant" , "Sheets, tablecloths etc" , "E.g. bedclothes" .)

I've seen this clue in The Independent.

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