Fixes: 70458/clusterfuzz-testcase-minimized-ffmpeg_BSF_TRACE_HEADERS_fuzzer-5259339779080192 Fixes: Assertion width > 0 && width <= 32 failed at libavcodec/cbs.c:608
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: James Almer <jamr...@gmail.com> --- libavcodec/cbs_h265_syntax_template.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/libavcodec/cbs_h265_syntax_template.c b/libavcodec/cbs_h265_syntax_template.c index f1be30a6c9..12fa185c77 100644 --- a/libavcodec/cbs_h265_syntax_template.c +++ b/libavcodec/cbs_h265_syntax_template.c @@ -2307,7 +2307,10 @@ SEI_FUNC(sei_3d_reference_displays_info, (CodedBitstreamContext *ctx, RWContext else length = FFMAX(0, (int)current->exponent_ref_display_width[i] + (int)current->prec_ref_display_width - 31); - ubs(length, mantissa_ref_display_width[i], 1, i); + if (length) + ubs(length, mantissa_ref_display_width[i], 1, i); + else + infer(mantissa_ref_display_width[i], 0); if (current->ref_viewing_distance_flag) { us(6, exponent_ref_viewing_distance[i], 0, 62, 1, i); if (!current->exponent_ref_viewing_distance[i]) @@ -2315,7 +2318,10 @@ SEI_FUNC(sei_3d_reference_displays_info, (CodedBitstreamContext *ctx, RWContext else length = FFMAX(0, (int)current->exponent_ref_viewing_distance[i] + (int)current->prec_ref_viewing_dist - 31); - ubs(length, mantissa_ref_viewing_distance[i], 1, i); + if (length) + ubs(length, mantissa_ref_viewing_distance[i], 1, i); + else + infer(mantissa_ref_viewing_distance[i], 0); } flags(additional_shift_present_flag[i], 1, i); if (current->additional_shift_present_flag[i]) -- 2.45.2 _______________________________________________ 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".
