[FFmpeg-cvslog] avcodec/truemotion2: Fix 2 integer overflows in tm2_low_res_block()
ffmpeg | branch: release/2.8 | Michael Niedermayer | Tue Nov 12 18:47:52 2019 +0100| [3510a1869edf4cd2678c7126989a5464fcd97f7d] | committer: Michael Niedermayer avcodec/truemotion2: Fix 2 integer overflows in tm2_low_res_block() Fixes: signed integer overflow: 1778647621 + 574372924 cannot be represented in type 'int' Fixes: 18692/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TRUEMOTION2_fuzzer-6248679635943424 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit 93d52a181ec050d3a4fb68f526604d39cd006be5) Signed-off-by: Michael Niedermayer > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3510a1869edf4cd2678c7126989a5464fcd97f7d --- libavcodec/truemotion2.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/truemotion2.c b/libavcodec/truemotion2.c index d4bd698e9f..5b9fa565fd 100644 --- a/libavcodec/truemotion2.c +++ b/libavcodec/truemotion2.c @@ -565,10 +565,10 @@ static inline void tm2_low_res_block(TM2Context *ctx, AVFrame *pic, int bx, int last[0] = (int)((unsigned)last[1] - ctx->D[0] - ctx->D[1] - ctx->D[2] - ctx->D[3])>> 1; last[2] = (int)((unsigned)last[1] + last[3]) >> 1; -t1 = ctx->D[0] + ctx->D[1]; +t1 = ctx->D[0] + (unsigned)ctx->D[1]; ctx->D[0] = t1 >> 1; ctx->D[1] = t1 - (t1 >> 1); -t2 = ctx->D[2] + ctx->D[3]; +t2 = ctx->D[2] + (unsigned)ctx->D[3]; ctx->D[2] = t2 >> 1; ctx->D[3] = t2 - (t2 >> 1); ___ 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".
[FFmpeg-cvslog] avcodec/truemotion2: Fix 2 integer overflows in tm2_low_res_block()
ffmpeg | branch: master | Michael Niedermayer | Tue Nov 12 18:47:52 2019 +0100| [93d52a181ec050d3a4fb68f526604d39cd006be5] | committer: Michael Niedermayer avcodec/truemotion2: Fix 2 integer overflows in tm2_low_res_block() Fixes: signed integer overflow: 1778647621 + 574372924 cannot be represented in type 'int' Fixes: 18692/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TRUEMOTION2_fuzzer-6248679635943424 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=93d52a181ec050d3a4fb68f526604d39cd006be5 --- libavcodec/truemotion2.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/truemotion2.c b/libavcodec/truemotion2.c index fbdb657363..7d70746339 100644 --- a/libavcodec/truemotion2.c +++ b/libavcodec/truemotion2.c @@ -586,10 +586,10 @@ static inline void tm2_low_res_block(TM2Context *ctx, AVFrame *pic, int bx, int last[0] = (int)((unsigned)last[1] - ctx->D[0] - ctx->D[1] - ctx->D[2] - ctx->D[3])>> 1; last[2] = (int)((unsigned)last[1] + last[3]) >> 1; -t1 = ctx->D[0] + ctx->D[1]; +t1 = ctx->D[0] + (unsigned)ctx->D[1]; ctx->D[0] = t1 >> 1; ctx->D[1] = t1 - (t1 >> 1); -t2 = ctx->D[2] + ctx->D[3]; +t2 = ctx->D[2] + (unsigned)ctx->D[3]; ctx->D[2] = t2 >> 1; ctx->D[3] = t2 - (t2 >> 1); ___ 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".
