virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-28 20:53:54 +02:00
Code Issues Releases Activity

avcodec/fic: Check available input space for cursor

Browse Source 
Fixes: out of array read
Fixes: 6546/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FIC_fuzzer-6317064647081984

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit cb2f7ea96b)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-05-05 22:00:01 +02:00
parent 00c18862a3
commit 1747563cea
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
libavcodec/fic.c
View File

@ -334,6 +334,10 @@ static int fic_decode_frame(AVCodecContext *avctx, void *data,
skip_cursor = 1;
}
if (!skip_cursor && avpkt->size < CURSOR_OFFSET + sizeof(ctx->cursor_buf)) {
skip_cursor = 1;
}
/* Slice height for all but the last slice. */
ctx->slice_h = 16 * (ctx->aligned_height >> 4) / nslices;
if (ctx->slice_h % 16)