52 lines
1.8 KiB
Diff
52 lines
1.8 KiB
Diff
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From be0ac3f40949cb951d5f0761f4a3bd597a94947f 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: Mon, 30 Sep 2024 19:04:51 +0300
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Subject: [PATCH 4/7] matroskademux: Don't take data out of an empty adapter
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when processing WavPack frames
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Thanks to Antonio Morales for finding and reporting the issue.
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Fixes GHSL-2024-249
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Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/3865
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Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8108>
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CVE: CVE-2024-47597
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CVE: CVE-2024-47601
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CVE: CVE-2024-47602
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CVE: CVE-2024-47603
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CVE: CVE-2024-47834
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Upstream-Status: Backport [https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/be0ac3f40949cb951d5f0761f4a3bd597a94947f]
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Signed-off-by: Peter Marko <peter.marko@siemens.com>
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---
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.../gst-plugins-good/gst/matroska/matroska-demux.c | 11 ++++++++---
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1 file changed, 8 insertions(+), 3 deletions(-)
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diff --git a/gst/matroska/matroska-demux.c b/gst/matroska/matroska-demux.c
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index 91e66fefc3..98ed51e86a 100644
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--- a/gst/matroska/matroska-demux.c
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+++ b/gst/matroska/matroska-demux.c
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@@ -4036,11 +4036,16 @@ gst_matroska_demux_add_wvpk_header (GstElement * element,
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}
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gst_buffer_unmap (*buf, &map);
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- newbuf = gst_adapter_take_buffer (adapter, gst_adapter_available (adapter));
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+ size = gst_adapter_available (adapter);
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+ if (size > 0) {
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+ newbuf = gst_adapter_take_buffer (adapter, size);
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+ gst_buffer_copy_into (newbuf, *buf,
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+ GST_BUFFER_COPY_TIMESTAMPS | GST_BUFFER_COPY_FLAGS, 0, -1);
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+ } else {
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+ newbuf = NULL;
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+ }
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g_object_unref (adapter);
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- gst_buffer_copy_into (newbuf, *buf,
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- GST_BUFFER_COPY_TIMESTAMPS | GST_BUFFER_COPY_FLAGS, 0, -1);
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gst_buffer_unref (*buf);
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*buf = newbuf;
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--
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2.30.2
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