mirror of https://git.tukaani.org/xz.git
Add more sanity checks to lzma_stream_buffer_decode().
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c129748675
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5fb34d8324
src/liblzma/common
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@ -26,6 +26,13 @@ lzma_stream_buffer_decode(uint64_t *memlimit, uint32_t flags,
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const uint8_t *in, size_t *in_pos, size_t in_size,
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const uint8_t *in, size_t *in_pos, size_t in_size,
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uint8_t *out, size_t *out_pos, size_t out_size)
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uint8_t *out, size_t *out_pos, size_t out_size)
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{
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{
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// Sanity checks
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if (in_pos == NULL || (in == NULL && *in_pos != in_size)
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|| *in_pos > in_size || out_pos == NULL
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|| (out == NULL && *out_pos != out_size)
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|| *out_pos > out_size)
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return LZMA_PROG_ERROR;
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// Catch flags that are not allowed in buffer-to-buffer decoding.
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// Catch flags that are not allowed in buffer-to-buffer decoding.
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if (flags & LZMA_TELL_ANY_CHECK)
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if (flags & LZMA_TELL_ANY_CHECK)
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return LZMA_PROG_ERROR;
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return LZMA_PROG_ERROR;
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