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* [FFmpeg-devel] [PATCH 1/4] avcodec/jpegxl_parser: ensure input padding is zeroed
@ 2024-06-27  0:40 Kacper Michajłow
  2024-06-27  0:40 ` [FFmpeg-devel] [PATCH 2/4] avcodec/parser: " Kacper Michajłow
                   ` (4 more replies)
  0 siblings, 5 replies; 9+ messages in thread
From: Kacper Michajłow @ 2024-06-27  0:40 UTC (permalink / raw)
  To: ffmpeg-devel; +Cc: Kacper Michajłow

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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^ permalink raw reply	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2024-06-27 17:17 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2024-06-27  0:40 [FFmpeg-devel] [PATCH 1/4] avcodec/jpegxl_parser: ensure input padding is zeroed Kacper Michajłow
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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