ffmpeg | branch: release/2.8 | Michael Niedermayer <mich...@niedermayer.cc> | Sun Feb 2 21:01:12 2020 +0100| [9a636c5a7614d3d2cff04af3356740ca0faca19e] | committer: Michael Niedermayer
avcodec/rv40dsp: Fix integer overflows in rv40_weight_func_*() Fixes: signed integer overflow: 40550400 * 128 cannot be represented in type 'int' Fixes: 20331/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RV40_fuzzer-5676685725007872 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 13171ad2e304b2a7d959429527b98c68ec5ea320) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=9a636c5a7614d3d2cff04af3356740ca0faca19e --- libavcodec/rv40dsp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/rv40dsp.c b/libavcodec/rv40dsp.c index 95ba0a9259..cdc61fc700 100644 --- a/libavcodec/rv40dsp.c +++ b/libavcodec/rv40dsp.c @@ -379,7 +379,7 @@ static void rv40_weight_func_rnd_ ## size (uint8_t *dst, uint8_t *src1, uint8_t \ for (j = 0; j < size; j++) {\ for (i = 0; i < size; i++)\ - dst[i] = (((w2 * src1[i]) >> 9) + ((w1 * src2[i]) >> 9) + 0x10) >> 5;\ + dst[i] = ((((unsigned)w2 * src1[i]) >> 9) + (((unsigned)w1 * src2[i]) >> 9) + 0x10) >> 5;\ src1 += stride;\ src2 += stride;\ dst += stride;\ @@ -391,7 +391,7 @@ static void rv40_weight_func_nornd_ ## size (uint8_t *dst, uint8_t *src1, uint8_ \ for (j = 0; j < size; j++) {\ for (i = 0; i < size; i++)\ - dst[i] = (w2 * src1[i] + w1 * src2[i] + 0x10) >> 5;\ + dst[i] = ((unsigned)w2 * src1[i] + (unsigned)w1 * src2[i] + 0x10) >> 5;\ src1 += stride;\ src2 += stride;\ dst += stride;\ _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
