ffmpeg | branch: release/3.3 | Michael Niedermayer <mich...@niedermayer.cc> | Mon Sep 18 17:26:09 2017 +0200| [6d1ebb9def18ee95f08fa63428d31b9742809e21] | committer: Michael Niedermayer
avcodec/ffv1dec: Fix integer overflow in read_quant_table() Fixes: runtime error: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int' Fixes: 3361/clusterfuzz-testcase-minimized-5065842955911168 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit d00fc952b6c261dd8eb0f7552b9ccf985dbc2b20) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6d1ebb9def18ee95f08fa63428d31b9742809e21 --- libavcodec/ffv1dec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c index 20921c6adf..8a0a82e62b 100644 --- a/libavcodec/ffv1dec.c +++ b/libavcodec/ffv1dec.c @@ -354,7 +354,7 @@ static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale) memset(state, 128, sizeof(state)); for (v = 0; i < 128; v++) { - unsigned len = get_symbol(c, state, 0) + 1; + unsigned len = get_symbol(c, state, 0) + 1U; if (len > 128 - i || !len) return AVERROR_INVALIDDATA; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
