diff --git a/modules/desktop_capture/screen_capturer_unittest.cc b/modules/desktop_capture/screen_capturer_unittest.cc
index ea77069278..ba6b8bfe3d 100644
--- a/modules/desktop_capture/screen_capturer_unittest.cc
+++ b/modules/desktop_capture/screen_capturer_unittest.cc
@@ -99,7 +99,13 @@ ACTION_P(SaveUniquePtrArg, dest) {
   *dest = std::move(*arg1);
 }
 
-TEST_F(ScreenCapturerTest, GetScreenListAndSelectScreen) {
+// TODO(bugs.webrtc.org/12950): Re-enable when libc++ issue is fixed.
+#if defined(WEBRTC_LINUX) && defined(MEMORY_SANITIZER)
+#define MAYBE_GetScreenListAndSelectScreen DISABLED_GetScreenListAndSelectScreen
+#else
+#define MAYBE_GetScreenListAndSelectScreen GetScreenListAndSelectScreen
+#endif
+TEST_F(ScreenCapturerTest, MAYBE_GetScreenListAndSelectScreen) {
   webrtc::DesktopCapturer::SourceList screens;
   EXPECT_TRUE(capturer_->GetSourceList(&screens));
   for (const auto& screen : screens) {
diff --git a/modules/desktop_capture/window_capturer_unittest.cc b/modules/desktop_capture/window_capturer_unittest.cc
index 3989c28f16..519c04601b 100644
--- a/modules/desktop_capture/window_capturer_unittest.cc
+++ b/modules/desktop_capture/window_capturer_unittest.cc
@@ -44,7 +44,13 @@ class WindowCapturerTest : public ::testing::Test,
 };
 
 // Verify that we can enumerate windows.
-TEST_F(WindowCapturerTest, Enumerate) {
+// TODO(bugs.webrtc.org/12950): Re-enable when libc++ issue is fixed
+#if defined(WEBRTC_LINUX) && defined(MEMORY_SANITIZER)
+#define MAYBE_Enumerate DISABLED_Enumerate
+#else
+#define MAYBE_Enumerate Enumerate
+#endif
+TEST_F(WindowCapturerTest, MAYBE_Enumerate) {
   DesktopCapturer::SourceList sources;
   EXPECT_TRUE(capturer_->GetSourceList(&sources));