[FFmpeg-cvslog] avcodec/escape124: Fix some return codes
Michael Niedermayer
git at videolan.org
Tue Mar 28 00:15:33 EEST 2023
ffmpeg | branch: release/5.0 | Michael Niedermayer <michael at niedermayer.cc> | Sun Mar 5 22:37:44 2023 +0100| [54326fd8d8e8cf32cfbeed814aa562e612bc6b99] | committer: Michael Niedermayer
avcodec/escape124: Fix some return codes
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 98df605f7a8e80471a113f7beb0983c90aa84525)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=54326fd8d8e8cf32cfbeed814aa562e612bc6b99
---
libavcodec/escape124.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/libavcodec/escape124.c b/libavcodec/escape124.c
index 51be851869..dab1631fe7 100644
--- a/libavcodec/escape124.c
+++ b/libavcodec/escape124.c
@@ -88,11 +88,6 @@ static CodeBook unpack_codebook(GetBitContext* gb, unsigned depth,
unsigned i, j;
CodeBook cb = { 0 };
- if (size >= INT_MAX / 34 || get_bits_left(gb) < (int)size * 34)
- return cb;
-
- if (size >= INT_MAX / sizeof(MacroBlock))
- return cb;
cb.blocks = av_malloc(size ? size * sizeof(MacroBlock) : 1);
if (!cb.blocks)
return cb;
@@ -226,7 +221,7 @@ static int escape124_decode_frame(AVCodecContext *avctx,
// represent a lower bound of the space needed for skipped superblocks. Non
// skipped SBs need more space.
if (get_bits_left(&gb) < 64 + s->num_superblocks * 23LL / 4320)
- return -1;
+ return AVERROR_INVALIDDATA;
frame_flags = get_bits_long(&gb, 32);
frame_size = get_bits_long(&gb, 32);
@@ -277,9 +272,14 @@ static int escape124_decode_frame(AVCodecContext *avctx,
}
av_freep(&s->codebooks[i].blocks);
+ if (cb_size >= INT_MAX / 34 || get_bits_left(&gb) < (int)cb_size * 34)
+ return AVERROR_INVALIDDATA;
+
+ if (cb_size >= INT_MAX / sizeof(MacroBlock))
+ return AVERROR_INVALIDDATA;
s->codebooks[i] = unpack_codebook(&gb, cb_depth, cb_size);
if (!s->codebooks[i].blocks)
- return -1;
+ return AVERROR(ENOMEM);
}
}
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