virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-02-09 14:14:39 +02:00
Code Issues Releases Activity

avcodec/exr: x/ymax cannot be INT_MAX

Browse Source 
The code uses x/ymax + 1 so the maximum is INT_MAX-1

Fixes: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
Fixes: 33158/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EXR_fuzzer-5545462457303040

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 48342aa0750f83006582d1598b5f22297f6dbf83)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-04-20 20:24:21 +02:00
parent 5d3c96cf11
commit fa38dfc0ef
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
libavcodec/exr.c
View File

@ -1795,6 +1795,7 @@ static int decode_header(EXRContext *s, AVFrame *frame)
ymax = bytestream2_get_le32(gb);
if (xmin > xmax || ymin > ymax ||
ymax == INT_MAX || xmax == INT_MAX ||
(unsigned)xmax - xmin >= INT_MAX ||
(unsigned)ymax - ymin >= INT_MAX) {
ret = AVERROR_INVALIDDATA;