From 1623f42d993adb9fa2bb9f7c766b6ce55922a8d5 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Tue, 25 Dec 2018 18:41:58 +0100 Subject: [PATCH] avcodec/exr: Check for duplicate channel index Fixes: Out of memory Fixes: 11582/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EXR_fuzzer-5730204559867904 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit f9728feaf90eb7493f8872356f54150efafb59cc) Signed-off-by: Michael Niedermayer --- libavcodec/exr.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/exr.c b/libavcodec/exr.c index 5253cc3f13..13755e1e6e 100644 --- a/libavcodec/exr.c +++ b/libavcodec/exr.c @@ -1463,6 +1463,11 @@ static int decode_header(EXRContext *s, AVFrame *frame) } s->pixel_type = current_pixel_type; s->channel_offsets[channel_index] = s->current_channel_offset; + } else if (channel_index >= 0) { + av_log(s->avctx, AV_LOG_ERROR, + "Multiple channels with index %d.\n", channel_index); + ret = AVERROR_INVALIDDATA; + goto fail; } s->channels = av_realloc(s->channels,