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Linshizhi
ffmpeg.wasm-core
Commits
b3415e4c
Commit
b3415e4c
authored
Jul 11, 2015
by
Michael Niedermayer
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avutil/mem: Fix potential overflow in overallocation code
Signed-off-by:
Michael Niedermayer
<
michael@niedermayer.cc
>
parent
bc976e57
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mem.c
libavutil/mem.c
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libavutil/mem.c
View file @
b3415e4c
...
...
@@ -480,7 +480,7 @@ void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
if
(
min_size
<
*
size
)
return
ptr
;
min_size
=
FFMAX
(
17
*
min_size
/
16
+
32
,
min_size
);
min_size
=
FFMAX
(
min_size
+
min_size
/
16
+
32
,
min_size
);
ptr
=
av_realloc
(
ptr
,
min_size
);
/* we could set this to the unmodified min_size but this is safer
...
...
@@ -500,7 +500,7 @@ static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size,
if
(
min_size
<
*
size
)
return
0
;
min_size
=
FFMAX
(
17
*
min_size
/
16
+
32
,
min_size
);
min_size
=
FFMAX
(
min_size
+
min_size
/
16
+
32
,
min_size
);
av_freep
(
ptr
);
val
=
zero_realloc
?
av_mallocz
(
min_size
)
:
av_malloc
(
min_size
);
memcpy
(
ptr
,
&
val
,
sizeof
(
val
));
...
...
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