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Bryan C. Mills d25a935574 [release-branch.go1.21] cmd/go: reject toolchain directives containing path separators
If GOTOOLCHAIN="path" or "auto", the go command uses exec.LookPath to
search for it in order to allow toolchains to refer to local-only
toolchain variants (such as toolchains built from enterprise- or
distro-patched source). However, those toolchains should only be
resolved from $PATH, not relative to the working directory of the
command.

Thanks to Juho Nurminen of Mattermost for reporting this issue.

Fixes #62198.
Fixes #62394.
Fixes CVE-2023-39320.

Change-Id: I247c7acea95d737362dd0475e9fc8515430d0fcc
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1996318
Run-TryBot: Roland Shoemaker <bracewell@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Roland Shoemaker <bracewell@google.com>
(cherry picked from commit e41c0a55d45e9a9acbc5d7c1143ea4fff8fb9283)
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/2014013
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Tatiana Bradley <tatianabradley@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/526095
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
2023-09-06 14:19:53 +00:00
.github doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
api [release-branch.go1.21] crypto/tls: change SendSessionTicket to take an options struct 2023-08-02 17:43:27 +00:00
doc [release-branch.go1.21] crypto/tls: add GODEBUG to control max RSA key size 2023-08-16 17:16:32 +00:00
lib/time lib/time: update to 2023c/2023c 2023-05-03 20:14:11 +00:00
misc [release-branch.go1.21] misc/wasm: switch default WASI runtime 2023-07-31 18:16:13 +00:00
src [release-branch.go1.21] cmd/go: reject toolchain directives containing path separators 2023-09-06 14:19:53 +00:00
test [release-branch.go1.21] runtime: fix maps.Clone bug when cloning a map mid-grow 2023-08-25 16:37:04 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore internal/platform,cmd/dist: export the list of supported platforms 2023-06-22 19:44:52 +00:00
CONTRIBUTING.md doc: normalize proposal-process links 2023-03-29 22:00:27 +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
VERSION [release-branch.go1.21] go1.21.0 2023-08-08 15:00:52 +00:00
codereview.cfg [release-branch.go1.21] update codereview.cfg for release-branch.go1.21 2023-06-14 20:26:29 +00:00
go.env cmd/go: additional doc-inspired tests and bug fixes 2023-06-06 19:18:46 +00:00

README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image Gopher image by Renee French, licensed under Creative Commons 4.0 Attributions license.

Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.

Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

Download and Install

Binary Distributions

Official binary distributions are available at https://go.dev/dl/.

After downloading a binary release, visit https://go.dev/doc/install for installation instructions.

Install From Source

If a binary distribution is not available for your combination of operating system and architecture, visit https://go.dev/doc/install/source for source installation instructions.

Contributing

Go is the work of thousands of contributors. We appreciate your help!

To contribute, please read the contribution guidelines at https://go.dev/doc/contribute.

Note that the Go project uses the issue tracker for bug reports and proposals only. See https://go.dev/wiki/Questions for a list of places to ask questions about the Go language.