Fixes: signed integer overflow: 9223372036854775807 + 564 cannot be represented in type 'long' Fixes: 26494/clusterfuzz-testcase-minimized-ffmpeg_dem_VOC_fuzzer-576754158849228
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- tools/target_dem_fuzzer.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/target_dem_fuzzer.c b/tools/target_dem_fuzzer.c index 8c9e373367..4add459aef 100644 --- a/tools/target_dem_fuzzer.c +++ b/tools/target_dem_fuzzer.c @@ -49,6 +49,8 @@ static int io_read(void *opaque, uint8_t *buf, int buf_size) c->filesize = FFMIN(c->pos, c->filesize); return AVERROR_EOF; } + if (c->pos > INT64_MAX - size) + return AVERROR(EIO); memcpy(buf, c->fuzz, size); c->fuzz += size; -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
