Nick Craig-Wood
ab1f458013
serve s3: reject bogus multipart part sizes in the reorder buffer GHSA-2p48-j3qc-rx9f
...
The multipart reorder-buffer admission trusted the client-declared part length.
A negative length was accepted, and `buffered + size` could overflow int64 for
a huge declared length, wrapping the running total negative and admitting
further parts past --multipart-streaming-buffer-limit.
Reject a negative length and use the overflow-safe comparison `size <=
bufferLimit - buffered` so an untrusted Content-Length can neither poison nor
overflow the budget.
(cherry picked from commit 337ab7f76ba6ba3731fba04b088bd831511bca04)
2026-09-04 16:18:18 +01:00
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