From fd986387262cbcdfe9235aff265d7065cf86b38d Mon Sep 17 00:00:00 2001
From: Qiu Jianlin <jianlin.qiu@intel.com>
Date: Wed, 31 Jul 2024 21:32:41 +0800
Subject: [PATCH] Check empty slice in H.265 bitstream parser.

This is cherry-picked from WebKit's PR by youenn@apple.com. The original
PR: https://github.com/WebKit/WebKit/pull/31525

Bug: chromium:41480904
Change-Id: I69c7c8d5842a576fa18432fb9f85c6890b47f3ed
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/358200
Commit-Queue: Jianlin Qiu <jianlin.qiu@intel.com>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#42708}
---
 common_video/h265/h265_bitstream_parser.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/common_video/h265/h265_bitstream_parser.cc b/common_video/h265/h265_bitstream_parser.cc
index c9d17b0628..ee41a79cc7 100644
--- a/common_video/h265/h265_bitstream_parser.cc
+++ b/common_video/h265/h265_bitstream_parser.cc
@@ -419,6 +419,10 @@ const H265SpsParser::SpsState* H265BitstreamParser::GetSPS(uint32_t id) const {
 }
 
 void H265BitstreamParser::ParseSlice(rtc::ArrayView<const uint8_t> slice) {
+  if (slice.empty()) {
+    RTC_LOG(LS_WARNING) << "Empty slice in H265 bitstream.";
+    return;
+  }
   H265::NaluType nalu_type = H265::ParseNaluType(slice[0]);
   switch (nalu_type) {
     case H265::NaluType::kVps: {