Fixes: shift exponent 32 is too large for 32-bit type 'unsigned int' Fixes: 25434/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FASTAUDIO_fuzzer-6252363168612352
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/fastaudio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/fastaudio.c b/libavcodec/fastaudio.c index 16f44790f5..e37d4f8425 100644 --- a/libavcodec/fastaudio.c +++ b/libavcodec/fastaudio.c @@ -92,7 +92,7 @@ static int read_bits(int bits, int *ppos, unsigned *src) pos = *ppos; pos += bits; - r = src[(pos - 1) / 32] >> (32 - pos % 32); + r = src[(pos - 1) / 32] >> ((-pos) & 31); *ppos = pos; return r & ((1 << bits) - 1); -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
