Backport of fix https://go-review.googlesource.com/c/go/+/533215/ to …

patches/005-cgo-CVE-2023-39323.patch

@@ -0,0 +1,60 @@
+From b90984afd75f24899b70e6946a60b5c32610cabb Mon Sep 17 00:00:00 2001
+From: Archana Ravindar <[email protected]>
+Date: Tue, 30 Jan 2024 21:16:01 +0530
+Subject: [PATCH] Backport of fix for CVE 2023-39323
+
+---
+ misc/cgo/errors/errors_test.go          | 1 +
+ misc/cgo/errors/testdata/err5.go        | 7 +++++++
+ src/cmd/compile/internal/noder/noder.go | 8 +++++++-
+ 3 files changed, 15 insertions(+), 1 deletion(-)
+ create mode 100644 misc/cgo/errors/testdata/err5.go
+
+diff --git a/misc/cgo/errors/errors_test.go b/misc/cgo/errors/errors_test.go
+index 9718b7f9fb..175fa030a4 100644
+--- a/misc/cgo/errors/errors_test.go
++++ b/misc/cgo/errors/errors_test.go
+@@ -106,6 +106,7 @@ func TestReportsTypeErrors(t *testing.T) {
+ 	for _, file := range []string{
+ 		"err1.go",
+ 		"err2.go",
++		"err5.go",
+ 		"issue11097a.go",
+ 		"issue11097b.go",
+ 		"issue18452.go",
+diff --git a/misc/cgo/errors/testdata/err5.go b/misc/cgo/errors/testdata/err5.go
+new file mode 100644
+index 0000000000..573ebe34da
+--- /dev/null
++++ b/misc/cgo/errors/testdata/err5.go
+@@ -0,0 +1,7 @@
++// Copyright 2023 The Go Authors. All rights reserved.
++// Use of this source code is governed by a BSD-style
++// license that can be found in the LICENSE file.
++package main
++//line /tmp/_cgo_.go:1
++//go:cgo_dynamic_linker "/elf/interp" // ERROR HERE: only allowed in cgo-generated code
++func main() {}
+diff --git a/src/cmd/compile/internal/noder/noder.go b/src/cmd/compile/internal/noder/noder.go
+index d0d95451ac..c99c085037 100644
+--- a/src/cmd/compile/internal/noder/noder.go
++++ b/src/cmd/compile/internal/noder/noder.go
+@@ -359,8 +359,14 @@ func (p *noder) pragma(pos syntax.Pos, blankLine bool, text string, old syntax.P
+ // contain cgo directives, and for security reasons
+ // (primarily misuse of linker flags), other files are not.
+ // See golang.org/issue/23672.
++// Note that cmd/go ignores files whose names start with underscore,
++// so the only _cgo_ files we will see from cmd/go are generated by cgo.
++// It's easy to bypass this check by calling the compiler directly;
++// we only protect against uses by cmd/go.
+ func isCgoGeneratedFile(pos syntax.Pos) bool {
+-	return strings.HasPrefix(filepath.Base(trimFilename(pos.Base())), "_cgo_")
++	// We need the absolute file, independent of //line directives,
++	// so we call pos.Base().Pos().
++	return strings.HasPrefix(filepath.Base(trimFilename(pos.Base().Pos().Base())), "_cgo_")
+ }
+
+ // safeArg reports whether arg is a "safe" command-line argument,
+-- 
+2.31.1
+