Fixes: out of array access Fixes: 9509/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CFHD_fuzzer-5283250636324864 Fixes: 9572/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CFHD_fuzzer-4920757409808384 Fixes: 9596/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CFHD_fuzzer-5114917580439552 Fixes: 9640/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CFHD_fuzzer-6247840698335232 Fixes: 9659/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CFHD_fuzzer-6079554987753472
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/cfhd.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) diff --git a/libavcodec/cfhd.c b/libavcodec/cfhd.c index 76838f0869..1959762f0e 100644 --- a/libavcodec/cfhd.c +++ b/libavcodec/cfhd.c @@ -668,11 +668,6 @@ static int cfhd_decode(AVCodecContext *avctx, void *data, int *got_frame, for (i = 0; i < run; i++) *coeff_data++ = coeff; } - if (s->peak.level) - peak_table(coeff_data - expected, &s->peak, expected); - if (s->difference_coding) - difference_coding(s->plane[s->channel_num].subband[s->subband_num_actual], highpass_width, highpass_height); - } else { while (1) { UPDATE_CACHE(re, &s->gb); @@ -692,11 +687,6 @@ static int cfhd_decode(AVCodecContext *avctx, void *data, int *got_frame, for (i = 0; i < run; i++) *coeff_data++ = coeff; } - if (s->peak.level) - peak_table(coeff_data - expected, &s->peak, expected); - if (s->difference_coding) - difference_coding(s->plane[s->channel_num].subband[s->subband_num_actual], highpass_width, highpass_height); - } CLOSE_READER(re, &s->gb); } @@ -706,6 +696,10 @@ static int cfhd_decode(AVCodecContext *avctx, void *data, int *got_frame, ret = AVERROR(EINVAL); goto end; } + if (s->peak.level) + peak_table(coeff_data - expected, &s->peak, expected); + if (s->difference_coding) + difference_coding(s->plane[s->channel_num].subband[s->subband_num_actual], highpass_width, highpass_height); bytes = FFALIGN(AV_CEIL_RSHIFT(get_bits_count(&s->gb), 3), 4); if (bytes > bytestream2_get_bytes_left(&gb)) { -- 2.18.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
