forked from jengelh/ffmpeg-5
Jan Engelhardt
c7d526a909
OBS-URL: https://build.opensuse.org/package/show/multimedia:libs/ffmpeg-5?expand=0&rev=84
57 lines
2.7 KiB
Diff
57 lines
2.7 KiB
Diff
From 2d9ed64859c9887d0504cd71dbd5b2c15e14251a Mon Sep 17 00:00:00 2001
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From: Paul B Mahol <onemda@gmail.com>
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Date: Sat, 25 Nov 2023 12:54:28 +0100
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Subject: [PATCH] avfilter/af_dialoguenhance: fix overreads
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References: https://bugzilla.opensuse.org/1222730
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References: CVE-2023-49528
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---
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libavfilter/af_dialoguenhance.c | 17 +++++++++--------
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1 file changed, 9 insertions(+), 8 deletions(-)
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diff --git a/libavfilter/af_dialoguenhance.c b/libavfilter/af_dialoguenhance.c
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index 1762ea7cde..29c8ab10a7 100644
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--- a/libavfilter/af_dialoguenhance.c
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+++ b/libavfilter/af_dialoguenhance.c
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@@ -96,12 +96,12 @@ static int config_input(AVFilterLink *inlink)
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if (!s->window)
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return AVERROR(ENOMEM);
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- s->in_frame = ff_get_audio_buffer(inlink, s->fft_size * 4);
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- s->center_frame = ff_get_audio_buffer(inlink, s->fft_size * 4);
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- s->out_dist_frame = ff_get_audio_buffer(inlink, s->fft_size * 4);
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- s->windowed_frame = ff_get_audio_buffer(inlink, s->fft_size * 4);
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- s->windowed_out = ff_get_audio_buffer(inlink, s->fft_size * 4);
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- s->windowed_prev = ff_get_audio_buffer(inlink, s->fft_size * 4);
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+ s->in_frame = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
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+ s->center_frame = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
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+ s->out_dist_frame = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
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+ s->windowed_frame = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
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+ s->windowed_out = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
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+ s->windowed_prev = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
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if (!s->in_frame || !s->windowed_out || !s->windowed_prev ||
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!s->out_dist_frame || !s->windowed_frame || !s->center_frame)
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return AVERROR(ENOMEM);
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@@ -250,6 +250,7 @@ static int de_stereo(AVFilterContext *ctx, AVFrame *out)
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float *right_osamples = (float *)out->extended_data[1];
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float *center_osamples = (float *)out->extended_data[2];
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const int offset = s->fft_size - s->overlap;
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+ const int nb_samples = FFMIN(s->overlap, s->in->nb_samples);
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float vad;
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// shift in/out buffers
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@@ -258,8 +259,8 @@ static int de_stereo(AVFilterContext *ctx, AVFrame *out)
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memmove(left_out, &left_out[s->overlap], offset * sizeof(float));
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memmove(right_out, &right_out[s->overlap], offset * sizeof(float));
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- memcpy(&left_in[offset], left_samples, s->overlap * sizeof(float));
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- memcpy(&right_in[offset], right_samples, s->overlap * sizeof(float));
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+ memcpy(&left_in[offset], left_samples, nb_samples * sizeof(float));
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+ memcpy(&right_in[offset], right_samples, nb_samples * sizeof(float));
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memset(&left_out[offset], 0, s->overlap * sizeof(float));
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memset(&right_out[offset], 0, s->overlap * sizeof(float));
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--
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2.44.0
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