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avcodec/flicvideo: Make line_packets int
Fixes: signed integer overflow: -32768 * 196032 cannot be represented in type 'int'
Fixes: 15300/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FLIC_fuzzer-5733319519502336
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 54bd47f861
)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
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@ -178,7 +178,7 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx,
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int lines;
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int compressed_lines;
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int starting_line;
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signed short line_packets;
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int line_packets;
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int y_ptr;
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int byte_run;
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int pixel_skip;
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@ -277,7 +277,7 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx,
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break;
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if (y_ptr > pixel_limit)
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return AVERROR_INVALIDDATA;
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line_packets = bytestream2_get_le16(&g2);
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line_packets = sign_extend(bytestream2_get_le16(&g2), 16);
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if ((line_packets & 0xC000) == 0xC000) {
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// line skip opcode
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line_packets = -line_packets;
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@ -505,7 +505,7 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
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int lines;
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int compressed_lines;
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signed short line_packets;
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int line_packets;
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int y_ptr;
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int byte_run;
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int pixel_skip;
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@ -569,7 +569,7 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
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break;
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if (y_ptr > pixel_limit)
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return AVERROR_INVALIDDATA;
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line_packets = bytestream2_get_le16(&g2);
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line_packets = sign_extend(bytestream2_get_le16(&g2), 16);
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if (line_packets < 0) {
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line_packets = -line_packets;
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if (line_packets > s->avctx->height)
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