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Linshizhi
ffmpeg.wasm-core
Commits
3db3fdf4
Commit
3db3fdf4
authored
Sep 29, 2011
by
Laurent Aimar
Committed by
Janne Grunau
Oct 07, 2011
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xan: Check for out of bound reads in xan_huffman_decode()
Signed-off-by:
Janne Grunau
<
janne-libav@jannau.net
>
parent
3e0757c2
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xan.c
libavcodec/xan.c
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libavcodec/xan.c
View file @
3db3fdf4
...
...
@@ -112,7 +112,10 @@ static int xan_huffman_decode(unsigned char *dest, int dest_len,
init_get_bits
(
&
gb
,
ptr
,
ptr_len
*
8
);
while
(
val
!=
0x16
)
{
val
=
src
[
val
-
0x17
+
get_bits1
(
&
gb
)
*
byte
];
unsigned
idx
=
val
-
0x17
+
get_bits1
(
&
gb
)
*
byte
;
if
(
idx
>=
2
*
byte
)
return
-
1
;
val
=
src
[
idx
];
if
(
val
<
0x16
)
{
if
(
dest
>=
dest_end
)
...
...
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