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Jason A. Donenfeld
c9cc0517bb
This code assigns src_len (size_t) to sl (int), which causes problems
when src_len is very large. Probably nobody in the kernel should be
passing this much data to chacha20poly1305 all in one go anyway, so I
don't think we need to change the algorithm or introduce larger types
or anything. But we should at least error out early in this case and
print a warning so that we get reports if this does happen and can look
into why anybody is possibly passing it that much data or if they're
accidently passing -1 or similar.
Fixes: d95312a3cc ("crypto: lib/chacha20poly1305 - reimplement crypt_from_sg() routine")
Cc: Ard Biesheuvel <[email protected]>
Cc: [email protected] # 5.5+
Signed-off-by: Jason A. Donenfeld <[email protected]>
Acked-by: Ard Biesheuvel <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>