From: "Kacper Michajłow" <kasper93@gmail.com>
To: ffmpeg-devel@ffmpeg.org
Cc: "Kacper Michajłow" <kasper93@gmail.com>
Subject: [FFmpeg-devel] [PATCH 1/4] avcodec/jpegxl_parser: ensure input padding is zeroed
Date: Thu, 27 Jun 2024 02:40:34 +0200
Message-ID: <20240627004037.1336-1-kasper93@gmail.com> (raw)
Fixes use of uninitialized value, reported by MSAN.
Found by OSS-Fuzz.
Signed-off-by: Kacper Michajłow <kasper93@gmail.com>
---
libavcodec/jpegxl_parser.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/libavcodec/jpegxl_parser.c b/libavcodec/jpegxl_parser.c
index 8c45e1a1b7..f833f844c4 100644
--- a/libavcodec/jpegxl_parser.c
+++ b/libavcodec/jpegxl_parser.c
@@ -1419,6 +1419,7 @@ static int try_parse(AVCodecParserContext *s, AVCodecContext *avctx, JXLParseCon
}
cs_buffer = ctx->cs_buffer;
cs_buflen = FFMIN(sizeof(ctx->cs_buffer) - AV_INPUT_BUFFER_PADDING_SIZE, ctx->copied);
+ memset(ctx->cs_buffer + cs_buflen, 0, AV_INPUT_BUFFER_PADDING_SIZE);
} else {
cs_buffer = buf;
cs_buflen = buf_size;
--
2.43.0
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next reply other threads:[~2024-06-27 0:41 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-27 0:40 Kacper Michajłow [this message]
2024-06-27 0:40 ` [FFmpeg-devel] [PATCH 2/4] avcodec/parser: " Kacper Michajłow
2024-06-27 0:40 ` [FFmpeg-devel] [PATCH 3/4] avformat/img2dec: " Kacper Michajłow
2024-06-27 6:59 ` Paul B Mahol
2024-06-27 8:11 ` Andreas Rheinhardt
2024-06-27 0:40 ` [FFmpeg-devel] [PATCH 4/4] avformat/jpegxl_anim_dec: " Kacper Michajłow
2024-06-27 0:55 ` [FFmpeg-devel] [PATCH 1/4] avcodec/jpegxl_parser: " Andreas Rheinhardt
2024-06-27 12:33 ` Kacper Michajlow
2024-06-27 17:17 ` Leo Izen
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