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codecparsers: av1: Clip max tile rows and cols values

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Clip tile rows and cols to 64 as describe in AV1 specification.

Fixes ZDI-CAN-22226 / CVE-2023-44429

Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/3015

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5637>
This commit is contained in:
Benjamin Gaignard 2023-10-04 11:14:38 +02:00 committed by Tim-Philipp Müller
parent c44e6be7de
commit b76a801f57
1 changed files with 2 additions and 0 deletions
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subprojects/gst-plugins-bad/gst-libs/gst/codecparsers/gstav1parser.c
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@ -2229,6 +2229,8 @@ gst_av1_parse_tile_info (GstAV1Parser * parser, GstBitReader * br,
((parser->state.mi_cols + 31) >> 5) : ((parser->state.mi_cols + 15) >> 4);
sb_rows = seq_header->use_128x128_superblock ? ((parser->state.mi_rows +
31) >> 5) : ((parser->state.mi_rows + 15) >> 4);
sb_cols = MIN (GST_AV1_MAX_TILE_COLS, sb_cols);
sb_rows = MIN (GST_AV1_MAX_TILE_ROWS, sb_rows);
sb_shift = seq_header->use_128x128_superblock ? 5 : 4;
sb_size = sb_shift + 2;
max_tile_width_sb = GST_AV1_MAX_TILE_WIDTH >> sb_size;