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From 8a88e5c1db05ebadfd4569955f6f47c23cdca3c4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tim-Philipp=20M=C3=BCller?= <tim@centricular.com>
Date: Wed, 3 Mar 2021 01:08:25 +0000
Subject: [PATCH] tag: id3v2: fix frame size check and potential invalid reads
Check the right variable when checking if there's
enough data left to read the frame size.
Closes https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/issues/876
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/1066>
---
gst-libs/gst/tag/id3v2frames.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gst-libs/gst/tag/id3v2frames.c b/gst-libs/gst/tag/id3v2frames.c
index 8e9f78254..f39659bf7 100644
--- a/gst-libs/gst/tag/id3v2frames.c
+++ b/gst-libs/gst/tag/id3v2frames.c
@@ -109,7 +109,7 @@ id3v2_parse_frame (ID3TagsWorking * work)
if (work->frame_flags & (ID3V2_FRAME_FORMAT_COMPRESSION |
ID3V2_FRAME_FORMAT_DATA_LENGTH_INDICATOR)) {
- if (work->hdr.frame_data_size <= 4)
+ if (frame_data_size <= 4)
return FALSE;
if (ID3V2_VER_MAJOR (work->hdr.version) == 3) {
work->parse_size = GST_READ_UINT32_BE (frame_data);
--
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