Fixes: signed integer overflow: 1633771809 * 32960 cannot be represented in type 'int' Fixes: 26532/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EXR_fuzzer-5613925708857344
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/exr.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/libavcodec/exr.c b/libavcodec/exr.c index 25c4f82471..a6435d33a4 100644 --- a/libavcodec/exr.c +++ b/libavcodec/exr.c @@ -1842,13 +1842,14 @@ static int decode_frame(AVCodecContext *avctx, void *data, ymax = FFMAX(0, s->ymax + 1); // Zero out the end if ymax+1 is not h - for (i = 0; i < planes; i++) { - ptr = picture->data[i] + (ymax * picture->linesize[i]); - for (y = ymax; y < avctx->height; y++) { - memset(ptr, 0, out_line_size); - ptr += picture->linesize[i]; + if (ymax < avctx->height) + for (i = 0; i < planes; i++) { + ptr = picture->data[i] + (ymax * picture->linesize[i]); + for (y = ymax; y < avctx->height; y++) { + memset(ptr, 0, out_line_size); + ptr += picture->linesize[i]; + } } - } picture->pict_type = AV_PICTURE_TYPE_I; *got_frame = 1; -- 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".
