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avcodec/takdsp: Fix integer overflows

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Fixes: avcodec/takdsp.c:44:23: runtime error: signed integer overflow: -2097158 - 2147012608 cannot be represented in type 'int'
Fixes: 58417/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TAK_fuzzer-5268919664640000

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2023-05-25 23:40:16 +02:00
parent adfe003f51
commit ff8a496d41
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GPG Key ID: B18E8928B3948D64
1 changed files with 6 additions and 6 deletions
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12
libavcodec/takdsp.c
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@ -28,8 +28,8 @@ static void decorrelate_ls(int32_t *p1, int32_t *p2, int length)
int i;
for (i = 0; i < length; i++) {
int32_t a = p1[i];
int32_t b = p2[i];
uint32_t a = p1[i];
uint32_t b = p2[i];
p2[i] = a + b;
}
}
@ -39,8 +39,8 @@ static void decorrelate_sr(int32_t *p1, int32_t *p2, int length)
int i;
for (i = 0; i < length; i++) {
int32_t a = p1[i];
int32_t b = p2[i];
uint32_t a = p1[i];
uint32_t b = p2[i];
p1[i] = b - a;
}
}
@ -50,7 +50,7 @@ static void decorrelate_sm(int32_t *p1, int32_t *p2, int length)
int i;
for (i = 0; i < length; i++) {
int32_t a = p1[i];
uint32_t a = p1[i];
int32_t b = p2[i];
a -= b >> 1;
p1[i] = a;
@ -63,7 +63,7 @@ static void decorrelate_sf(int32_t *p1, int32_t *p2, int length, int dshift, int
int i;
for (i = 0; i < length; i++) {
int32_t a = p1[i];
uint32_t a = p1[i];
int32_t b = p2[i];
b = (unsigned)((int)(dfactor * (unsigned)(b >> dshift) + 128) >> 8) << dshift;
p1[i] = b - a;