Fixes: out of array access: Fixes: 48567/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PNG_fuzzer-6716193709096960
Alternatively it should be possible to limit this to 3 plane RGB 8 /16bit to ensure the size is what it should be Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/pngdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c index f1cad26c52..cb4162d2ab 100644 --- a/libavcodec/pngdec.c +++ b/libavcodec/pngdec.c @@ -322,7 +322,7 @@ void ff_png_filter_row(PNGDSPContext *dsp, uint8_t *dst, int filter_type, static void deloco_ ## NAME(TYPE *dst, int size, int alpha) \ { \ int i; \ - for (i = 0; i < size; i += 3 + alpha) { \ + for (i = 0; i < size - 2; i += 3 + alpha) { \ int g = dst [i + 1]; \ dst[i + 0] += g; \ dst[i + 2] += g; \ -- 2.17.1 _______________________________________________ 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".
