From 3c43a7a354e8ad9e6a270b592cd7c5c1f3f62110 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 20 Jul 2022 01:14:51 +0200 Subject: [PATCH] avcodec/hdrdec: lines can be empty Fixes: infinite loop Fixes: 49223/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HDR_fuzzer-6603308596330496 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol Signed-off-by: Michael Niedermayer --- libavcodec/hdrdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/hdrdec.c b/libavcodec/hdrdec.c index 458215c6ac..29e87057fa 100644 --- a/libavcodec/hdrdec.c +++ b/libavcodec/hdrdec.c @@ -107,7 +107,7 @@ static int hdr_decode_frame(AVCodecContext *avctx, AVFrame *p, hdr_get_line(&gb, line, sizeof(line)); if (sscanf(line, "PIXASPECT=%f\n", &sar) == 1) avctx->sample_aspect_ratio = p->sample_aspect_ratio = av_inv_q(av_d2q(sar, 4096)); - } while (line[0] != '\n'); + } while (line[0] != '\n' && line[0]); hdr_get_line(&gb, line, sizeof(line)); if (sscanf(line, "-Y %d +X %d\n", &height, &width) == 2) {