libcontainer.createLibcontainerMount(): use filepath.Abs()

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
opencontainers · Jun 7, 2021 · dbcf967 · dbcf967
1 parent 1ed4336
commit dbcf967
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/libcontainer/specconv/spec_linux.go b/libcontainer/specconv/spec_linux.go
@@ -335,7 +335,10 @@ func createLibcontainerMount(cwd string, m specs.Mount) (*configs.Mount, error)
 	destination := m.Destination
 	if !filepath.IsAbs(m.Destination) {
 		// Relax validation for backward compatibility
-		destination = filepath.Join("/", m.Destination)
+		destination, err := filepath.Abs(m.Destination)
+		if err != nil {
+			return nil, err
+		}
 		logrus.Warnf("mount destination %s not absolute, using %s instead", m.Destination, destination)
 	}
 	flags, pgflags, data, ext := parseMountOptions(m.Options)