Security fix - containerd to 1.7.27

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

vendor/google.golang.org/protobuf/proto/extension.go

@@ -11,18 +11,21 @@ import (
 // HasExtension reports whether an extension field is populated.
 // It returns false if m is invalid or if xt does not extend m.
 func HasExtension(m Message, xt protoreflect.ExtensionType) bool {
-	// Treat nil message interface as an empty message; no populated fields.
-	if m == nil {
+	// Treat nil message interface or descriptor as an empty message; no populated
+	// fields.
+	if m == nil || xt == nil {
 		return false
 	}
 
 	// As a special-case, we reports invalid or mismatching descriptors
 	// as always not being populated (since they aren't).
-	if xt == nil || m.ProtoReflect().Descriptor() != xt.TypeDescriptor().ContainingMessage() {
+	mr := m.ProtoReflect()
+	xd := xt.TypeDescriptor()
+	if mr.Descriptor() != xd.ContainingMessage() {
 		return false
 	}
 
-	return m.ProtoReflect().Has(xt.TypeDescriptor())
+	return mr.Has(xd)
 }
 
 // ClearExtension clears an extension field such that subsequent
@@ -36,7 +39,49 @@ func ClearExtension(m Message, xt protoreflect.ExtensionType) {
 // If the field is unpopulated, it returns the default value for
 // scalars and an immutable, empty value for lists or messages.
 // It panics if xt does not extend m.
-func GetExtension(m Message, xt protoreflect.ExtensionType) interface{} {
+//
+// The type of the value is dependent on the field type of the extension.
+// For extensions generated by protoc-gen-go, the Go type is as follows:
+//
+//	╔═══════════════════╤═════════════════════════╗
+//	║ Go type           │ Protobuf kind           ║
+//	╠═══════════════════╪═════════════════════════╣
+//	║ bool              │ bool                    ║
+//	║ int32             │ int32, sint32, sfixed32 ║
+//	║ int64             │ int64, sint64, sfixed64 ║
+//	║ uint32            │ uint32, fixed32         ║
+//	║ uint64            │ uint64, fixed64         ║
+//	║ float32           │ float                   ║
+//	║ float64           │ double                  ║
+//	║ string            │ string                  ║
+//	║ []byte            │ bytes                   ║
+//	║ protoreflect.Enum │ enum                    ║
+//	║ proto.Message     │ message, group          ║
+//	╚═══════════════════╧═════════════════════════╝
+//
+// The protoreflect.Enum and proto.Message types are the concrete Go type
+// associated with the named enum or message. Repeated fields are represented
+// using a Go slice of the base element type.
+//
+// If a generated extension descriptor variable is directly passed to
+// GetExtension, then the call should be followed immediately by a
+// type assertion to the expected output value. For example:
+//
+//	mm := proto.GetExtension(m, foopb.E_MyExtension).(*foopb.MyMessage)
+//
+// This pattern enables static analysis tools to verify that the asserted type
+// matches the Go type associated with the extension field and
+// also enables a possible future migration to a type-safe extension API.
+//
+// Since singular messages are the most common extension type, the pattern of
+// calling HasExtension followed by GetExtension may be simplified to:
+//
+//	if mm := proto.GetExtension(m, foopb.E_MyExtension).(*foopb.MyMessage); mm != nil {
+//	    ... // make use of mm
+//	}
+//
+// The mm variable is non-nil if and only if HasExtension reports true.
+func GetExtension(m Message, xt protoreflect.ExtensionType) any {
 	// Treat nil message interface as an empty message; return the default.
 	if m == nil {
 		return xt.InterfaceOf(xt.Zero())
@@ -48,7 +93,36 @@ func GetExtension(m Message, xt protoreflect.ExtensionType) interface{} {
 // SetExtension stores the value of an extension field.
 // It panics if m is invalid, xt does not extend m, or if type of v
 // is invalid for the specified extension field.
-func SetExtension(m Message, xt protoreflect.ExtensionType, v interface{}) {
+//
+// The type of the value is dependent on the field type of the extension.
+// For extensions generated by protoc-gen-go, the Go type is as follows:
+//
+//	╔═══════════════════╤═════════════════════════╗
+//	║ Go type           │ Protobuf kind           ║
+//	╠═══════════════════╪═════════════════════════╣
+//	║ bool              │ bool                    ║
+//	║ int32             │ int32, sint32, sfixed32 ║
+//	║ int64             │ int64, sint64, sfixed64 ║
+//	║ uint32            │ uint32, fixed32         ║
+//	║ uint64            │ uint64, fixed64         ║
+//	║ float32           │ float                   ║
+//	║ float64           │ double                  ║
+//	║ string            │ string                  ║
+//	║ []byte            │ bytes                   ║
+//	║ protoreflect.Enum │ enum                    ║
+//	║ proto.Message     │ message, group          ║
+//	╚═══════════════════╧═════════════════════════╝
+//
+// The protoreflect.Enum and proto.Message types are the concrete Go type
+// associated with the named enum or message. Repeated fields are represented
+// using a Go slice of the base element type.
+//
+// If a generated extension descriptor variable is directly passed to
+// SetExtension (e.g., foopb.E_MyExtension), then the value should be a
+// concrete type that matches the expected Go type for the extension descriptor
+// so that static analysis tools can verify type correctness.
+// This also enables a possible future migration to a type-safe extension API.
+func SetExtension(m Message, xt protoreflect.ExtensionType, v any) {
 	xd := xt.TypeDescriptor()
 	pv := xt.ValueOf(v)
 
@@ -75,7 +149,7 @@ func SetExtension(m Message, xt protoreflect.ExtensionType, v interface{}) {
 // It returns immediately if f returns false.
 // While iterating, mutating operations may only be performed
 // on the current extension field.
-func RangeExtensions(m Message, f func(protoreflect.ExtensionType, interface{}) bool) {
+func RangeExtensions(m Message, f func(protoreflect.ExtensionType, any) bool) {
 	// Treat nil message interface as an empty message; nothing to range over.
 	if m == nil {
 		return