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ntdll: Limit header_size to the file size.

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Alexandre Julliard 2006-03-27 21:29:46 +02:00
parent 6bb18e24e9
commit 18d7980fd8
1 changed files with 2 additions and 1 deletions
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3
dlls/ntdll/virtual.c
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@ -868,7 +868,8 @@ static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_siz
goto error; goto error;
} }
status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */ status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
if (header_size > st.st_size) goto error; if (!st.st_size) goto error;
header_size = min( header_size, st.st_size );
if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ, if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ,
removable ) != STATUS_SUCCESS) goto error; removable ) != STATUS_SUCCESS) goto error;
dos = (IMAGE_DOS_HEADER *)ptr; dos = (IMAGE_DOS_HEADER *)ptr;