virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

avcodec/tdsc: Only reallocate deflatebuffer if its size changed

Browse Source 
Fixes: Timeout (47sec -> 35msec)
Fixes: 23375/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TDSC_fuzzer-5633949497032704

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-06-18 12:26:08 +02:00
parent 8821023b15
commit 8dff6da313
1 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
libavcodec/tdsc.c
View File

@ -529,10 +529,15 @@ static int tdsc_decode_frame(AVCodecContext *avctx, void *data,
/* Resize deflate buffer on resolution change */
if (ctx->width != avctx->width || ctx->height != avctx->height) {
ctx->deflatelen = avctx->width * avctx->height * (3 + 1);
ret = av_reallocp(&ctx->deflatebuffer, ctx->deflatelen);
if (ret < 0)
return ret;
int deflatelen = avctx->width * avctx->height * (3 + 1);
if (deflatelen != ctx->deflatelen) {
ctx->deflatelen =deflatelen;
ret = av_reallocp(&ctx->deflatebuffer, ctx->deflatelen);
if (ret < 0) {
ctx->deflatelen = 0;
return ret;
}
}
}
dlen = ctx->deflatelen;