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liblzma: Add dest and src NULL checks to lzma_index_cat.

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The documentation states LZMA_PROG_ERROR can be returned from
lzma_index_cat. Previously, lzma_index_cat could not return
LZMA_PROG_ERROR. Now, the validation is similar to
lzma_index_append, which does a NULL check on the index
parameter.
This commit is contained in:
Jia Tan 2022-09-21 16:15:50 +08:00 committed by Lasse Collin
parent afd5a8bf53
commit 8cc9874a79
1 changed files with 3 additions and 0 deletions
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3
src/liblzma/common/index.c
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@ -771,6 +771,9 @@ extern LZMA_API(lzma_ret)
lzma_index_cat(lzma_index *restrict dest, lzma_index *restrict src,
const lzma_allocator *allocator)
{
if (dest == NULL || src == NULL)
return LZMA_PROG_ERROR;
const lzma_vli dest_file_size = lzma_index_file_size(dest);
// Check that we don't exceed the file size limits.