Message ID | 20201014155308.15499-2-michael@niedermayer.cc |
---|---|
State | Accepted |
Commit | 939b72b02e40a7db440b68f31ab23bd550785344 |
Headers | show |
Series | [FFmpeg-devel,1/2] avcodec/notchlc: Check uncompressed size against input for LZ4 | expand |
Context | Check | Description |
---|---|---|
andriy/PPC64_make | warning | Make failed |
andriy/x86_make | success | Make finished |
andriy/x86_make_fate | success | Make fate finished |
On Wed, Oct 14, 2020 at 05:53:08PM +0200, Michael Niedermayer wrote: > Fixes: signed integer overflow: 2147483647 + 64 cannot be represented in type 'int' > Fixes: 26218/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CRI_fuzzer-5734075396259840 > > Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> > --- > libavcodec/decode.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) will apply [...]
diff --git a/libavcodec/decode.c b/libavcodec/decode.c index 3ef1ece25b..a0acfb54c5 100644 --- a/libavcodec/decode.c +++ b/libavcodec/decode.c @@ -1876,7 +1876,8 @@ int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags) int ret; if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) { - if ((ret = av_image_check_size2(FFALIGN(avctx->width, STRIDE_ALIGN), avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx)) < 0 || avctx->pix_fmt<0) { + if ((unsigned)avctx->width > INT_MAX - STRIDE_ALIGN || + (ret = av_image_check_size2(FFALIGN(avctx->width, STRIDE_ALIGN), avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx)) < 0 || avctx->pix_fmt<0) { av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n"); ret = AVERROR(EINVAL); goto fail;
Fixes: signed integer overflow: 2147483647 + 64 cannot be represented in type 'int' Fixes: 26218/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CRI_fuzzer-5734075396259840 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> --- libavcodec/decode.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)