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42 lines
1.3 KiB
42 lines
1.3 KiB
2 months ago
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From b990afeaf306972756e154d4542b2ab1170e506c Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
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Date: Thu, 26 Sep 2024 22:16:06 +0300
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Subject: [PATCH 2/7] qtdemux: Avoid integer overflow when parsing Theora
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extension
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Thanks to Antonio Morales for finding and reporting the issue.
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Fixes GHSL-2024-166
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Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/3851
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Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8094>
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---
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subprojects/gst-plugins-good/gst/isomp4/qtdemux.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/subprojects/gst-plugins-good/gst/isomp4/qtdemux.c b/subprojects/gst-plugins-good/gst/isomp4/qtdemux.c
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index 5723fce466..75a5a53713 100644
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--- a/subprojects/gst-plugins-good/gst/isomp4/qtdemux.c
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+++ b/subprojects/gst-plugins-good/gst/isomp4/qtdemux.c
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@@ -8206,7 +8206,7 @@ qtdemux_parse_theora_extension (GstQTDemux * qtdemux, QtDemuxStream * stream,
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end -= 8;
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while (buf < end) {
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- gint size;
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+ guint32 size;
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guint32 type;
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size = QT_UINT32 (buf);
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@@ -8214,7 +8214,7 @@ qtdemux_parse_theora_extension (GstQTDemux * qtdemux, QtDemuxStream * stream,
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GST_LOG_OBJECT (qtdemux, "%p %p", buf, end);
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- if (buf + size > end || size <= 0)
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+ if (end - buf < size || size < 8)
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break;
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buf += 8;
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--
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2.47.0
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