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

avformat/ape: Check frames size 

Fixes: signed integer overflow: 9223372036854775806 + 3 cannot be represented in type 'long'
Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_APE_fuzzer-6389264140599296

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 2022-09-17 21:19:53 +02:00
parent 1b47190c94
commit d0349c9929
No known key found for this signature in database
GPG Key ID: B18E8928B3948D64
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavformat/ape.c
View File

@ -298,6 +298,8 @@ static int ape_read_header(AVFormatContext * s)
ape->frames[i].pos -= ape->frames[i].skip; ape->frames[i].pos -= ape->frames[i].skip;
ape->frames[i].size += ape->frames[i].skip; ape->frames[i].size += ape->frames[i].skip;
} }
if (ape->frames[i].size > INT_MAX - 3)
return AVERROR_INVALIDDATA;
ape->frames[i].size = (ape->frames[i].size + 3) & ~3; ape->frames[i].size = (ape->frames[i].size + 3) & ~3;
} }
if (ape->fileversion < 3810) { if (ape->fileversion < 3810) {