From b4431399ec1e10afff458cf1ffae2a75987d725a Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 3 Jul 2022 13:31:19 +0200 Subject: [PATCH] avcodec/ffv1dec: Limit golomb rice coded slices to width 8M This limit is possibly not reachable due to other restrictions on buffers but the decoder run table is too small beyond this, so explicitly check for it. Signed-off-by: Michael Niedermayer --- libavcodec/ffv1dec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c index 365f8b77a7..7731c15c87 100644 --- a/libavcodec/ffv1dec.c +++ b/libavcodec/ffv1dec.c @@ -187,6 +187,9 @@ static int decode_slice_header(const FFV1Context *f, FFV1Context *fs) || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height) return -1; + if (fs->ac == AC_GOLOMB_RICE && fs->slice_width >= (1<<23)) + return AVERROR_INVALIDDATA; + for (i = 0; i < f->plane_count; i++) { PlaneContext * const p = &fs->plane[i]; int idx = get_symbol(c, state, 0);