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Damien Neil 3549c613b9 mime/multipart: avoid excessive copy buffer allocations in ReadForm
When copying form data to disk with io.Copy,
allocate only one copy buffer and reuse it rather than
creating two buffers per file (one from io.multiReader.WriteTo,
and a second one from os.File.ReadFrom).

Thanks to Jakob Ackermann (@das7pad) for reporting this issue.

For CVE-2023-24536
For #59153

Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1802453
Run-TryBot: Damien Neil <dneil@google.com>
Reviewed-by: Julie Qiu <julieqiu@google.com>
Reviewed-by: Roland Shoemaker <bracewell@google.com>
Change-Id: I732bd2e1e7467918cac8ab9d65d089272ba4656f
Reviewed-on: https://go-review.googlesource.com/c/go/+/482075
Auto-Submit: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Bypass: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
2023-04-04 17:01:56 +00:00
.github doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
api reflect: deprecate SliceHeader and StringHeader 2023-04-03 17:08:28 +00:00
doc doc: fix template mistake in godebug.md 2023-04-03 17:06:45 +00:00
lib/time time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +00:00
misc runtime/cgo: store M for C-created thread in pthread key 2023-04-03 18:34:11 +00:00
src mime/multipart: avoid excessive copy buffer allocations in ReadForm 2023-04-04 17:01:56 +00:00
test Revert "cmd/compile: allow more inlining of functions that construct closures" 2023-04-03 14:51:33 +00:00
.gitattributes
.gitignore time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +00:00
codereview.cfg
CONTRIBUTING.md doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
go.env cmd/go: introduce GOROOT/go.env and move proxy/sumdb config there 2023-01-17 23:10:39 +00:00
LICENSE
PATENTS
README.md README: update from CC-BY-3.0 to CC-BY-4.0 2022-11-02 20:14:56 +00:00
SECURITY.md SECURITY.md: replace golang.org with go.dev 2022-04-26 19:59:47 +00:00

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