RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

avcodec/nuv: widen buf_size type 

Fixes: signed integer overflow: 65312 * 65312 cannot be represented in type 'int'
Fixes: 20492/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_NUV_fuzzer-5740176118906880

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 1ac106bf56)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-05-10 19:09:47 +02:00
parent ed96d96303
commit afbb6324c0
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/nuv.c
View File

@ -126,7 +126,7 @@ static int codec_reinit(AVCodecContext *avctx, int width, int height,
get_quant_quality(c, quality);
if (width != c->width || height != c->height) {
// also reserve space for a possible additional header
int buf_size = height * width * 3 / 2
int64_t buf_size = height * (int64_t)width * 3 / 2
+ FFMAX(AV_LZO_OUTPUT_PADDING, AV_INPUT_BUFFER_PADDING_SIZE)
+ RTJPEG_HEADER_SIZE;
if (buf_size > INT_MAX/8)