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avcodec/wmalosslessdec: Fix multiple integer overflows
authorMichael Niedermayer <michael@niedermayer.cc>
Thu, 9 Jan 2020 01:06:36 +0000 (02:06 +0100)
committerMichael Niedermayer <michael@niedermayer.cc>
Thu, 30 Jan 2020 18:58:22 +0000 (19:58 +0100)
commit422202516cfb6239abb4e20db9f628f3899a76e2
treea6e115d03a139371626ee57984898b2f061e1f59tree | snapshot
parenta3655bb02c21e70573335e9396632f64b2589536commit | diff
avcodec/wmalosslessdec: Fix multiple integer overflows

Fixes: left shift of 3329 by 20 places cannot be represented in type 'int'
Fixes: signed integer overflow: -199378355 + -1948950833 cannot be represented in type 'int'
Fixes: 19837/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMALOSSLESS_fuzzer-5752565837070336
Fixes: 19839/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMALOSSLESS_fuzzer-5767483265122304
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/wmalosslessdec.c diff | blob | history
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