Fixes: runtime error: signed integer overflow: 2147483598 + 128 cannot be represented in type 'int' Fixes: 12926/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JPEG2000_fuzzer-5705100733972480
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/jpeg2000dwt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/jpeg2000dwt.c b/libavcodec/jpeg2000dwt.c index ce1678a3d7..badf0f8cd0 100644 --- a/libavcodec/jpeg2000dwt.c +++ b/libavcodec/jpeg2000dwt.c @@ -531,7 +531,7 @@ static void dwt_decode97_int(DWTContext *s, int32_t *t) } for (i = 0; i < w * h; i++) - data[i] = (data[i] + ((1<<I_PRESHIFT)>>1)) >> I_PRESHIFT; + data[i] = (data[i] + ((1LL<<I_PRESHIFT)>>1)) >> I_PRESHIFT; } int ff_jpeg2000_dwt_init(DWTContext *s, int border[2][2], -- 2.20.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
