diff options
| author | Michael Niedermayer <[email protected]> | 2019-09-14 14:26:49 +0200 |
|---|---|---|
| committer | Michael Niedermayer <[email protected]> | 2020-01-06 11:30:43 +0100 |
| commit | 6b9a6088d6355819b0ab6e57d11100e7976511a7 (patch) | |
| tree | 793c128ec18c04c1aff87202359d0d71cc23ba51 | |
| parent | d3f88922496217491d7fa22b00fbe5f9b12e5494 (diff) | |
avcodec/ralf: Fix integer overflow in decode_channel()
Fixes: signed integer overflow: -1094995519 * 64 cannot be represented in type 'int'
Fixes: 17030/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RALF_fuzzer-5640695838146560
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <[email protected]>
(cherry picked from commit fbb314b6f2c2b77608442966f28aac20343a1cae)
Signed-off-by: Michael Niedermayer <[email protected]>
| -rw-r--r-- | libavcodec/ralf.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/ralf.c b/libavcodec/ralf.c index 75c9371b95..006ab46414 100644 --- a/libavcodec/ralf.c +++ b/libavcodec/ralf.c @@ -300,8 +300,8 @@ static int decode_channel(RALFContext *ctx, GetBitContext *gb, int ch, t = get_vlc2(gb, code_vlc->table, code_vlc->bits, 2); code1 = t / range2; code2 = t % range2; - dst[i] = extend_code(gb, code1, range, 0) * (1 << add_bits); - dst[i + 1] = extend_code(gb, code2, range, 0) * (1 << add_bits); + dst[i] = extend_code(gb, code1, range, 0) * (1U << add_bits); + dst[i + 1] = extend_code(gb, code2, range, 0) * (1U << add_bits); if (add_bits) { dst[i] |= get_bits(gb, add_bits); dst[i + 1] |= get_bits(gb, add_bits); |