mirror of
git://git.yoctoproject.org/poky
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2fa8edea5a
backport fixes: CVE-2021-27918 CVE-2021-36221 CVE-2021-39293 CVE-2021-41771 ignore: CVE-2022-29526 CVE-2022-30634 (From OE-Core rev: ddb09ccc3caebbd3cf643bb3bb3c198845050c69) Signed-off-by: Chee Yang Lee <chee.yang.lee@intel.com> Signed-off-by: Steve Sakoman <steve@sakoman.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
87 lines
15 KiB
Diff
87 lines
15 KiB
Diff
From d19c5bdb24e093a2d5097b7623284eb02726cede Mon Sep 17 00:00:00 2001
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From: Roland Shoemaker <roland@golang.org>
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Date: Thu, 14 Oct 2021 13:02:01 -0700
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Subject: [PATCH] [release-branch.go1.16] debug/macho: fail on invalid dynamic
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symbol table command
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Fail out when loading a file that contains a dynamic symbol table
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command that indicates a larger number of symbols than exist in the
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loaded symbol table.
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Thanks to Burak Çarıkçı - Yunus Yıldırım (CT-Zer0 Crypttech) for
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reporting this issue.
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Updates #48990
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Fixes #48991
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Fixes CVE-2021-41771
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Change-Id: Ic3d6e6529241afcc959544b326b21b663262bad5
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Reviewed-on: https://go-review.googlesource.com/c/go/+/355990
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Reviewed-by: Julie Qiu <julie@golang.org>
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Reviewed-by: Katie Hockman <katie@golang.org>
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Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
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Run-TryBot: Roland Shoemaker <roland@golang.org>
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TryBot-Result: Go Bot <gobot@golang.org>
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Trust: Katie Hockman <katie@golang.org>
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(cherry picked from commit 61536ec03063b4951163bd09609c86d82631fa27)
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Reviewed-on: https://go-review.googlesource.com/c/go/+/359454
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Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
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https://github.com/golang/go/commit/d19c5bdb24e093a2d5097b7623284eb02726cede
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CVE: CVE-2021-41771
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Upstream-Status: Backport
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Signed-off-by: Chee Yang Lee <chee.yang.lee@intel.com>
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---
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src/debug/macho/file.go | 9 +++++++++
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src/debug/macho/file_test.go | 7 +++++++
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.../testdata/gcc-amd64-darwin-exec-with-bad-dysym.base64 | 1 +
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3 files changed, 17 insertions(+)
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create mode 100644 src/debug/macho/testdata/gcc-amd64-darwin-exec-with-bad-dysym.base64
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diff --git a/src/debug/macho/file.go b/src/debug/macho/file.go
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index 085b0c8219bad..73cfce3c7606e 100644
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--- a/src/debug/macho/file.go
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+++ b/src/debug/macho/file.go
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@@ -345,6 +345,15 @@ func NewFile(r io.ReaderAt) (*File, error) {
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if err := binary.Read(b, bo, &hdr); err != nil {
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return nil, err
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}
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+ if hdr.Iundefsym > uint32(len(f.Symtab.Syms)) {
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+ return nil, &FormatError{offset, fmt.Sprintf(
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+ "undefined symbols index in dynamic symbol table command is greater than symbol table length (%d > %d)",
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+ hdr.Iundefsym, len(f.Symtab.Syms)), nil}
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+ } else if hdr.Iundefsym+hdr.Nundefsym > uint32(len(f.Symtab.Syms)) {
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+ return nil, &FormatError{offset, fmt.Sprintf(
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+ "number of undefined symbols after index in dynamic symbol table command is greater than symbol table length (%d > %d)",
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+ hdr.Iundefsym+hdr.Nundefsym, len(f.Symtab.Syms)), nil}
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+ }
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dat := make([]byte, hdr.Nindirectsyms*4)
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if _, err := r.ReadAt(dat, int64(hdr.Indirectsymoff)); err != nil {
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return nil, err
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diff --git a/src/debug/macho/file_test.go b/src/debug/macho/file_test.go
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index 03915c86e23d9..9beeb80dd27c1 100644
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--- a/src/debug/macho/file_test.go
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+++ b/src/debug/macho/file_test.go
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@@ -416,3 +416,10 @@ func TestTypeString(t *testing.T) {
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t.Errorf("got %v, want %v", TypeExec.GoString(), "macho.Exec")
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}
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}
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+
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+func TestOpenBadDysymCmd(t *testing.T) {
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+ _, err := openObscured("testdata/gcc-amd64-darwin-exec-with-bad-dysym.base64")
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+ if err == nil {
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+ t.Fatal("openObscured did not fail when opening a file with an invalid dynamic symbol table command")
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+ }
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+}
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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
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new file mode 100644
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index 0000000000000..8e0436639c109
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--- /dev/null
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+++ b/src/debug/macho/testdata/gcc-amd64-darwin-exec-with-bad-dysym.base64
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@@ -0,0 +1 @@
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\ No newline at end of file
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