[FFmpeg-cvslog] avformat/rpl: reject invalid sample rate

[Kacper Michajłow]

ffmpeg | branch: master | Kacper Michajłow <kasper93 at gmail.com> | Sat May 11 13:34:32 2024 +0200| [a3d3a580263df01d69977d1b6042c0f71965b168] | committer: Michael Niedermayer

avformat/rpl: reject invalid sample rate

Fixes overflow check for bit_rate multiplication few lines below.

Found by OSS-Fuzz.

Signed-off-by: Kacper Michajłow <kasper93 at gmail.com>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a3d3a580263df01d69977d1b6042c0f71965b168
---

 libavformat/rpl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavformat/rpl.c b/libavformat/rpl.c
index 09d0b68f74..32a762b60a 100644
--- a/libavformat/rpl.c
+++ b/libavformat/rpl.c
@@ -202,6 +202,8 @@ static int rpl_read_header(AVFormatContext *s)
         ast->codecpar->codec_type      = AVMEDIA_TYPE_AUDIO;
         ast->codecpar->codec_tag       = audio_format;
         ast->codecpar->sample_rate     = read_line_and_int(pb, &error);  // audio bitrate
+        if (ast->codecpar->sample_rate < 0)
+            return AVERROR_INVALIDDATA;
         channels                       = read_line_and_int(pb, &error);  // number of audio channels
         error |= read_line(pb, line, sizeof(line));
         ast->codecpar->bits_per_coded_sample = read_int(line, &endptr, &error);  // audio bits per sample