go: fix CVE-2022-41717 Excessive memory use in got server

(From OE-Core rev: a483f182676d87b7035e37fac8e21226fbd9fd63)

Signed-off-by: Vivek Kumbhar <vkumbhar@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 76 insertions, 0 deletions

diff --git a/meta/recipes-devtools/go/go-1.14.inc b/meta/recipes-devtools/go/go-1.14.inc
index b4a137b8c8..1d97001654 100644
--- a/meta/recipes-devtools/go/go-1.14.inc
+++ b/meta/recipes-devtools/go/go-1.14.inc
@@ -50,6 +50,7 @@ SRC_URI += "\
     file://CVE-2022-28131.patch \
     file://CVE-2022-28327.patch \
     file://CVE-2022-41715.patch \
+    file://CVE-2022-41717.patch \
 "
 
 SRC_URI_append_libc-musl = " file://0009-ld-replace-glibc-dynamic-linker-with-musl.patch"
diff --git a/meta/recipes-devtools/go/go-1.14/CVE-2022-41717.patch b/meta/recipes-devtools/go/go-1.14/CVE-2022-41717.patch
new file mode 100644
index 0000000000..8bf22ee4d4
--- /dev/null
+++ b/meta/recipes-devtools/go/go-1.14/CVE-2022-41717.patch
@@ -0,0 +1,75 @@
+From 618120c165669c00a1606505defea6ca755cdc27 Mon Sep 17 00:00:00 2001
+From: Damien Neil <dneil@google.com>
+Date: Wed, 30 Nov 2022 16:46:33 -0500
+Subject: [PATCH] [release-branch.go1.19] net/http: update bundled
+ golang.org/x/net/http2
+
+Disable cmd/internal/moddeps test, since this update includes PRIVATE
+track fixes.
+
+For #56350.
+For #57009.
+Fixes CVE-2022-41717.
+
+Change-Id: I5c6ce546add81f361dcf0d5123fa4eaaf8f0a03b
+Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1663835
+Reviewed-by: Tatiana Bradley <tatianabradley@google.com>
+Reviewed-by: Julie Qiu <julieqiu@google.com>
+Reviewed-on: https://go-review.googlesource.com/c/go/+/455363
+TryBot-Result: Gopher Robot <gobot@golang.org>
+Run-TryBot: Jenny Rakoczy <jenny@golang.org>
+Reviewed-by: Michael Pratt <mpratt@google.com>
+
+Upstream-Status: Backport [https://github.com/golang/go/commit/618120c165669c00a1606505defea6ca755cdc27]
+CVE-2022-41717
+Signed-off-by: Vivek Kumbhar <vkumbhar@mvista.com>
+---
+ src/net/http/h2_bundle.go | 18 +++++++++++-------
+ 1 file changed, 11 insertions(+), 7 deletions(-)
+
+diff --git a/src/net/http/h2_bundle.go b/src/net/http/h2_bundle.go
+index 83f2a72..cc03a62 100644
+--- a/src/net/http/h2_bundle.go
++++ b/src/net/http/h2_bundle.go
+@@ -4096,6 +4096,7 @@ type http2serverConn struct {
+        headerTableSize             uint32
+        peerMaxHeaderListSize       uint32            // zero means unknown (default)
+        canonHeader                 map[string]string // http2-lower-case -> Go-Canonical-Case
++       canonHeaderKeysSize         int               // canonHeader keys size in bytes
+        writingFrame                bool              // started writing a frame (on serve goroutine or separate)
+        writingFrameAsync           bool              // started a frame on its own goroutine but haven't heard back on wroteFrameCh
+        needsFrameFlush             bool              // last frame write wasn't a flush
+@@ -4278,6 +4279,13 @@ func (sc *http2serverConn) condlogf(err error, format string, args ...interface{
+        }
+ }
+
++// maxCachedCanonicalHeadersKeysSize is an arbitrarily-chosen limit on the size
++// of the entries in the canonHeader cache.
++// This should be larger than the size of unique, uncommon header keys likely to
++// be sent by the peer, while not so high as to permit unreasonable memory usage
++// if the peer sends an unbounded number of unique header keys.
++const http2maxCachedCanonicalHeadersKeysSize = 2048
++
+ func (sc *http2serverConn) canonicalHeader(v string) string {
+        sc.serveG.check()
+        http2buildCommonHeaderMapsOnce()
+@@ -4293,14 +4301,10 @@ func (sc *http2serverConn) canonicalHeader(v string) string {
+                sc.canonHeader = make(map[string]string)
+        }
+        cv = CanonicalHeaderKey(v)
+-       // maxCachedCanonicalHeaders is an arbitrarily-chosen limit on the number of
+-       // entries in the canonHeader cache. This should be larger than the number
+-       // of unique, uncommon header keys likely to be sent by the peer, while not
+-       // so high as to permit unreaasonable memory usage if the peer sends an unbounded
+-       // number of unique header keys.
+-       const maxCachedCanonicalHeaders = 32
+-       if len(sc.canonHeader) < maxCachedCanonicalHeaders {
++       size := 100 + len(v)*2 // 100 bytes of map overhead + key + value
++       if sc.canonHeaderKeysSize+size <= http2maxCachedCanonicalHeadersKeysSize {
+                sc.canonHeader[v] = cv
++               sc.canonHeaderKeysSize += size
+        }
+        return cv
+ }
+--
+2.30.2