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-rw-r--r--tests/files/README10
-rw-r--r--tests/files/bad-3-index-uncomp-overflow.xzbin0 -> 132 bytes
2 files changed, 10 insertions, 0 deletions
diff --git a/tests/files/README b/tests/files/README
index ba05aba5..3e550dfe 100644
--- a/tests/files/README
+++ b/tests/files/README
@@ -209,6 +209,16 @@
file gets rejected specifically due to Unpadded Size having an invalid
value.
+ bad-3-index-uncomp-overflow.xz has Index whose Uncompressed Size
+ fields have huge values whose sum exceeds the maximum allowed size
+ of 2^63 - 1 bytes. In this file the sum is exactly 2^64.
+ lzma_index_append() in liblzma <= 5.2.6 lacks the integer overflow
+ check for the uncompressed size and thus doesn't catch the error
+ when decoding the Index field in this file. This makes "xz -l"
+ not detect the error and will display 0 as the uncompressed size.
+ Note that regular decompression isn't affected by this bug because
+ it uses lzma_index_hash_append() instead.
+
bad-2-compressed_data_padding.xz has non-null byte in the padding of
the Compressed Data field of the first Block.
diff --git a/tests/files/bad-3-index-uncomp-overflow.xz b/tests/files/bad-3-index-uncomp-overflow.xz
new file mode 100644
index 00000000..e1440ec6
--- /dev/null
+++ b/tests/files/bad-3-index-uncomp-overflow.xz
Binary files differ