1 files changed, 50 insertions, 0 deletions

diff --git a/meta/recipes-devtools/go/go-1.14/CVE-2022-23772.patch b/meta/recipes-devtools/go/go-1.14/CVE-2022-23772.patch
new file mode 100644
index 0000000000..f0daee3624
--- /dev/null
+++ b/meta/recipes-devtools/go/go-1.14/CVE-2022-23772.patch
@@ -0,0 +1,50 @@
+From 70882eedccac803ddcf1c3215e0ae8fd59847e39 Mon Sep 17 00:00:00 2001
+From: Katie Hockman <katie@golang.org>
+Date: Sat, 26 Feb 2022 20:03:38 +0000
+Subject: [PATCH] [release-branch.go1.16] math/big: prevent overflow in
+ (*Rat).SetString
+
+Credit to rsc@ for the original patch.
+
+Thanks to the OSS-Fuzz project for discovering this
+issue and to Emmanuel Odeke (@odeke_et) for reporting it.
+
+Updates #50699
+Fixes #50700
+Fixes CVE-2022-23772
+---
+ src/math/big/ratconv.go      | 5 +++++
+ src/math/big/ratconv_test.go | 1 +
+ 2 files changed, 6 insertions(+)
+
+diff --git a/src/math/big/ratconv.go b/src/math/big/ratconv.go
+index 941139e..e8cbdbe 100644
+--- a/src/math/big/ratconv.go
++++ b/src/math/big/ratconv.go
+@@ -168,6 +168,11 @@ func (z *Rat) SetString(s string) (*Rat, bool) {
+                n := exp5
+                if n < 0 {
+                        n = -n
++                       if n < 0 {
++                               // This can occur if -n overflows. -(-1 << 63) would become
++                               // -1 << 63, which is still negative.
++                               return nil, false
++                       }
+                }
+                pow5 := z.b.abs.expNN(natFive, nat(nil).setWord(Word(n)), nil) // use underlying array of z.b.abs
+                if exp5 > 0 {
+diff --git a/src/math/big/ratconv_test.go b/src/math/big/ratconv_test.go
+index ba0d1ba..b820df4 100644
+--- a/src/math/big/ratconv_test.go
++++ b/src/math/big/ratconv_test.go
+@@ -104,6 +104,7 @@ var setStringTests = []StringTest{
+        {in: "4/3/"},
+        {in: "4/3."},
+        {in: "4/"},
++       {in: "13e-9223372036854775808"}, // CVE-2022-23772
+ 
+        // valid
+        {"0", "0", true},
+-- 
+2.17.1
+