highperfocused/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

avcodec/utvideodec: Fix bytes left check in decode_frame()

Browse Source 
Fixes: out of array read
Fixes: poc-2017.avi

Found-by: GwanYeong Kim <gy741.kim@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 118e1b0b3370dd1c0da442901b486689efd1654b)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-02-02 21:44:57 +01:00
parent 5e67a2e13a
commit 342f1da134
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavcodec/utvideodec.c
View File

@ -561,7 +561,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
for (j = 0; j < c->slices; j++) {
slice_end = bytestream2_get_le32u(&gb);
if (slice_end < 0 || slice_end < slice_start ||
bytestream2_get_bytes_left(&gb) < slice_end) {
bytestream2_get_bytes_left(&gb) < slice_end + 1024LL) {
av_log(avctx, AV_LOG_ERROR, "Incorrect slice size\n");
return AVERROR_INVALIDDATA;
}