From 6f2cf88771bd8c3986b0c8b6404eabc5b37d8a6e Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 25 May 2023 23:40:19 +0200 Subject: [PATCH] avcodec/hevc_refs: Check that nb_refs stays <= HEVC_MAX_REFS Fixes: 58528/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-5834725318328320 Fixes: index 16 out of bounds for type 'int [16]' Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/hevc_refs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/hevc_refs.c b/libavcodec/hevc_refs.c index a4af6ca656..3aa8e19950 100644 --- a/libavcodec/hevc_refs.c +++ b/libavcodec/hevc_refs.c @@ -354,7 +354,7 @@ int ff_hevc_slice_rpl(HEVCContext *s) } } // Construct RefPicList0, RefPicList1 (8-8, 8-10) - if (s->ps.pps->pps_curr_pic_ref_enabled_flag) { + if (s->ps.pps->pps_curr_pic_ref_enabled_flag && rpl_tmp.nb_refs < HEVC_MAX_REFS) { rpl_tmp.list[rpl_tmp.nb_refs] = s->ref->poc; rpl_tmp.ref[rpl_tmp.nb_refs] = s->ref; rpl_tmp.isLongTerm[rpl_tmp.nb_refs] = 1;