1 files changed, 86 insertions, 0 deletions

diff --git a/meta/recipes-devtools/go/go-1.14/CVE-2021-41771.patch b/meta/recipes-devtools/go/go-1.14/CVE-2021-41771.patch
new file mode 100644
index 0000000000..526796dbcb
--- /dev/null
+++ b/meta/recipes-devtools/go/go-1.14/CVE-2021-41771.patch
@@ -0,0 +1,86 @@
+From d19c5bdb24e093a2d5097b7623284eb02726cede Mon Sep 17 00:00:00 2001
+From: Roland Shoemaker <roland@golang.org>
+Date: Thu, 14 Oct 2021 13:02:01 -0700
+Subject: [PATCH] [release-branch.go1.16] debug/macho: fail on invalid dynamic
+ symbol table command
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Fail out when loading a file that contains a dynamic symbol table
+command that indicates a larger number of symbols than exist in the
+loaded symbol table.
+
+Thanks to Burak Çarıkçı - Yunus Yıldırım (CT-Zer0 Crypttech) for
+reporting this issue.
+
+Updates #48990
+Fixes #48991
+Fixes CVE-2021-41771
+
+Change-Id: Ic3d6e6529241afcc959544b326b21b663262bad5
+Reviewed-on: https://go-review.googlesource.com/c/go/+/355990
+Reviewed-by: Julie Qiu <julie@golang.org>
+Reviewed-by: Katie Hockman <katie@golang.org>
+Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
+Run-TryBot: Roland Shoemaker <roland@golang.org>
+TryBot-Result: Go Bot <gobot@golang.org>
+Trust: Katie Hockman <katie@golang.org>
+(cherry picked from commit 61536ec03063b4951163bd09609c86d82631fa27)
+Reviewed-on: https://go-review.googlesource.com/c/go/+/359454
+Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
+
+https://github.com/golang/go/commit/d19c5bdb24e093a2d5097b7623284eb02726cede
+CVE: CVE-2021-41771
+Upstream-Status: Backport
+Signed-off-by: Chee Yang Lee <chee.yang.lee@intel.com>
+---
+ src/debug/macho/file.go                                  | 9 +++++++++
+ src/debug/macho/file_test.go                             | 7 +++++++
+ .../testdata/gcc-amd64-darwin-exec-with-bad-dysym.base64 | 1 +
+ 3 files changed, 17 insertions(+)
+ create mode 100644 src/debug/macho/testdata/gcc-amd64-darwin-exec-with-bad-dysym.base64
+
+diff --git a/src/debug/macho/file.go b/src/debug/macho/file.go
+index 085b0c8219bad..73cfce3c7606e 100644
+--- a/src/debug/macho/file.go
++++ b/src/debug/macho/file.go
+@@ -345,6 +345,15 @@ func NewFile(r io.ReaderAt) (*File, error) {
+                        if err := binary.Read(b, bo, &hdr); err != nil {
+                                return nil, err
+                        }
++                       if hdr.Iundefsym > uint32(len(f.Symtab.Syms)) {
++                               return nil, &FormatError{offset, fmt.Sprintf(
++                                       "undefined symbols index in dynamic symbol table command is greater than symbol table length (%d > %d)",
++                                       hdr.Iundefsym, len(f.Symtab.Syms)), nil}
++                       } else if hdr.Iundefsym+hdr.Nundefsym > uint32(len(f.Symtab.Syms)) {
++                               return nil, &FormatError{offset, fmt.Sprintf(
++                                       "number of undefined symbols after index in dynamic symbol table command is greater than symbol table length (%d > %d)",
++                                       hdr.Iundefsym+hdr.Nundefsym, len(f.Symtab.Syms)), nil}
++                       }
+                        dat := make([]byte, hdr.Nindirectsyms*4)
+                        if _, err := r.ReadAt(dat, int64(hdr.Indirectsymoff)); err != nil {
+                                return nil, err
+diff --git a/src/debug/macho/file_test.go b/src/debug/macho/file_test.go
+index 03915c86e23d9..9beeb80dd27c1 100644
+--- a/src/debug/macho/file_test.go
++++ b/src/debug/macho/file_test.go
+@@ -416,3 +416,10 @@ func TestTypeString(t *testing.T) {
+                t.Errorf("got %v, want %v", TypeExec.GoString(), "macho.Exec")
+        }
+ }
++
++func TestOpenBadDysymCmd(t *testing.T) {
++       _, err := openObscured("testdata/gcc-amd64-darwin-exec-with-bad-dysym.base64")
++       if err == nil {
++               t.Fatal("openObscured did not fail when opening a file with an invalid dynamic symbol table command")
++       }
++}
+diff --git a/src/debug/macho/testdata/gcc-amd64-darwin-exec-with-bad-dysym.base64 b/src/debug/macho/testdata/gcc-amd64-darwin-exec-with-bad-dysym.base64
+new file mode 100644
+index 0000000000000..8e0436639c109
+--- /dev/null
++++ b/src/debug/macho/testdata/gcc-amd64-darwin-exec-with-bad-dysym.base64
+@@ -0,0 +1 @@
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+\ No newline at end of file