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ffmpeg: fix CVE-2023-49528

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Buffer Overflow vulnerability in FFmpeg version n6.1-3-g466799d4f5, allows a
local attacker to execute arbitrary code and cause a denial of service (DoS)
via the af_dialoguenhance.c:261:5 in the de_stereo component.

(From OE-Core rev: a5e0e1f8be3c6611c09158c80e26848ae3d4f4e7)

Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
This commit is contained in:
Archana Polampalli
2024-12-06 13:11:47 +00:00
committed by Steve Sakoman
parent 9edd744fd8
commit ac0988d9f2
2 changed files with 59 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

58
meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2023-49528.patch Normal file
View File

@@ -0,0 +1,58 @@
From 2d9ed64859c9887d0504cd71dbd5b2c15e14251a Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Sat, 25 Nov 2023 12:54:28 +0100
Subject: [PATCH 3/3] avfilter/af_dialoguenhance: fix overreads
CVE: CVE-2023-49528
Upstream-Status: Backport [https://github.com/ffmpeg/ffmpeg/commit/2d9ed64859c9887d0504cd71dbd5b2c15e14251a]
Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
---
libavfilter/af_dialoguenhance.c | 17 +++++++++--------
1 file changed, 9 insertions(+), 8 deletions(-)
diff --git a/libavfilter/af_dialoguenhance.c b/libavfilter/af_dialoguenhance.c
index 1762ea7..29c8ab1 100644
--- a/libavfilter/af_dialoguenhance.c
+++ b/libavfilter/af_dialoguenhance.c
@@ -96,12 +96,12 @@ static int config_input(AVFilterLink *inlink)
if (!s->window)
return AVERROR(ENOMEM);
- s->in_frame = ff_get_audio_buffer(inlink, s->fft_size * 4);
- s->center_frame = ff_get_audio_buffer(inlink, s->fft_size * 4);
- s->out_dist_frame = ff_get_audio_buffer(inlink, s->fft_size * 4);
- s->windowed_frame = ff_get_audio_buffer(inlink, s->fft_size * 4);
- s->windowed_out = ff_get_audio_buffer(inlink, s->fft_size * 4);
- s->windowed_prev = ff_get_audio_buffer(inlink, s->fft_size * 4);
+ s->in_frame = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
+ s->center_frame = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
+ s->out_dist_frame = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
+ s->windowed_frame = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
+ s->windowed_out = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
+ s->windowed_prev = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
if (!s->in_frame || !s->windowed_out || !s->windowed_prev ||
!s->out_dist_frame || !s->windowed_frame || !s->center_frame)
return AVERROR(ENOMEM);
@@ -250,6 +250,7 @@ static int de_stereo(AVFilterContext *ctx, AVFrame *out)
float *right_osamples = (float *)out->extended_data[1];
float *center_osamples = (float *)out->extended_data[2];
const int offset = s->fft_size - s->overlap;
+ const int nb_samples = FFMIN(s->overlap, s->in->nb_samples);
float vad;
// shift in/out buffers
@@ -258,8 +259,8 @@ static int de_stereo(AVFilterContext *ctx, AVFrame *out)
memmove(left_out, &left_out[s->overlap], offset * sizeof(float));
memmove(right_out, &right_out[s->overlap], offset * sizeof(float));
- memcpy(&left_in[offset], left_samples, s->overlap * sizeof(float));
- memcpy(&right_in[offset], right_samples, s->overlap * sizeof(float));
+ memcpy(&left_in[offset], left_samples, nb_samples * sizeof(float));
+ memcpy(&right_in[offset], right_samples, nb_samples * sizeof(float));
memset(&left_out[offset], 0, s->overlap * sizeof(float));
memset(&right_out[offset], 0, s->overlap * sizeof(float));
--
2.40.0

1
meta/recipes-multimedia/ffmpeg/ffmpeg_6.1.1.bb
View File

@@ -35,6 +35,7 @@ SRC_URI = " \
file://CVE-2023-49501.patch \
file://CVE-2024-28661.patch \
file://CVE-2023-50007.patch \
file://CVE-2023-49528.patch \
"
SRC_URI[sha256sum] = "8684f4b00f94b85461884c3719382f1261f0d9eb3d59640a1f4ac0873616f968"