CVE-2015-8035 Fix XZ compression support loopCVE-2015-8035

For https://bugzilla.gnome.org/show_bug.cgi?id=757466
DoS when parsing specially crafted XML document if XZ support
is compiled in (which wasn't the case for 2.9.2 and master since
Nov 2013, fixed in next commit !)

1 files changed, 4 insertions, 0 deletions

diff --git a/xzlib.c b/xzlib.c
index 0dcb9f48..1fab5463 100644
--- a/xzlib.c
+++ b/xzlib.c
@@ -581,6 +581,10 @@ xz_decomp(xz_statep state)
             xz_error(state, LZMA_DATA_ERROR, "compressed data error");
             return -1;
         }
+        if (ret == LZMA_PROG_ERROR) {
+            xz_error(state, LZMA_PROG_ERROR, "compression error");
+            return -1;
+        }
     } while (strm->avail_out && ret != LZMA_STREAM_END);
 
     /* update available output and crc check value */