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From c2cd814cdd8cbf8dda6ccec2266327a5321fbde8 Mon Sep 17 00:00:00 2001
From: Jan Grulich <grulja@gmail.com>
Date: Tue, 15 Mar 2022 14:31:55 +0100
Subject: [PATCH] PipeWire capturer: check existence of cursor metadata
Check whether there are any cursor metadata before we try to validate
and use them, otherwise we might crash on this.
Bug: webrtc:13429
Change-Id: I365da59a189b6b974cebafc94fec49d5b942efae
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/255601
Reviewed-by: Alexander Cooper <alcooper@chromium.org>
Commit-Queue: Alexander Cooper <alcooper@chromium.org>
Cr-Commit-Position: refs/heads/main@{#36240}
---
.../desktop_capture/linux/wayland/shared_screencast_stream.cc | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/modules/desktop_capture/linux/wayland/shared_screencast_stream.cc b/modules/desktop_capture/linux/wayland/shared_screencast_stream.cc
index a8c86e26..9e81df4c 100644
--- a/modules/desktop_capture/linux/wayland/shared_screencast_stream.cc
+++ b/modules/desktop_capture/linux/wayland/shared_screencast_stream.cc
@@ -650,7 +650,7 @@ void SharedScreenCastStreamPrivate::ProcessBuffer(pw_buffer* buffer) {
const struct spa_meta_cursor* cursor =
static_cast<struct spa_meta_cursor*>(spa_buffer_find_meta_data(
spa_buffer, SPA_META_Cursor, sizeof(*cursor)));
- if (spa_meta_cursor_is_valid(cursor)) {
+ if (cursor && spa_meta_cursor_is_valid(cursor)) {
struct spa_meta_bitmap* bitmap = nullptr;
if (cursor->bitmap_offset)
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