Fixes: runtime error: shift exponent 64 is too large for 64-bit type 'residual' (aka 'unsigned long') Fixes: 2838/clusterfuzz-testcase-minimized-6260066086813696
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/dirac_vlc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/dirac_vlc.c b/libavcodec/dirac_vlc.c index d3b9900beb..bd37f31f46 100644 --- a/libavcodec/dirac_vlc.c +++ b/libavcodec/dirac_vlc.c @@ -56,6 +56,9 @@ int ff_dirac_golomb_read_32bit(DiracGolombLUT *lut_ctx, const uint8_t *buf, if ((c_idx + 1) > coeffs) return c_idx; + if (res_bits >= RSIZE_BITS) + res_bits = res = 0; + /* res_bits is a hint for better branch prediction */ if (res_bits && l->sign) { int32_t coeff = 1; -- 2.14.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
