From 99f1f07b78c7a73f1e1eea5678b88c2b9d5bac3a Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 27 Apr 2022 22:16:51 +0200 Subject: avcodec/h264dec: Skip late SEI Fixes: Race condition Fixes: clusterfuzz-testcase-minimized-mediasource_MP2T_AVC_pipeline_integration_fuzzer-6282675434094592 Found-by: google ClusterFuzz Tested-by: Dan Sanders Signed-off-by: Michael Niedermayer (cherry picked from commit f7dd408d64013ae177c1f8d0e04418e5075db5bc) Signed-off-by: Michael Niedermayer --- libavcodec/h264dec.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/h264dec.c b/libavcodec/h264dec.c index 0e189da61a..dc259ceff2 100644 --- a/libavcodec/h264dec.c +++ b/libavcodec/h264dec.c @@ -699,6 +699,10 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size) avpriv_request_sample(avctx, "data partitioning"); break; case H264_NAL_SEI: + if (h->setup_finished) { + avpriv_request_sample(avctx, "Late SEI"); + break; + } ret = ff_h264_sei_decode(&h->sei, &nal->gb, &h->ps, avctx); h->has_recovery_point = h->has_recovery_point || h->sei.recovery_point.recovery_frame_cnt != -1; if (avctx->debug & FF_DEBUG_GREEN_MD) -- cgit v1.2.1