From 866526055a97d1b56d5ec55c4967953275824c64 Mon Sep 17 00:00:00 2001
From: Packit Service <user-cont-team+packit-service@redhat.com>
Date: Dec 09 2020 21:12:24 +0000
Subject: Apply patch libxml2-CVE-2018-9251.patch


patch_name: libxml2-CVE-2018-9251.patch
present_in_specfile: true
location_in_specfile: 6

---

diff --git a/xzlib.c b/xzlib.c
index 87ba9ae..0f2ddc0 100644
--- a/xzlib.c
+++ b/xzlib.c
@@ -562,6 +562,10 @@ xz_decomp(xz_statep state)
                          "internal error: inflate stream corrupt");
                 return -1;
             }
+            /*
+             * FIXME: Remapping a couple of error codes and falling through
+             * to the LZMA error handling looks fragile.
+             */
             if (ret == Z_MEM_ERROR)
                 ret = LZMA_MEM_ERROR;
             if (ret == Z_DATA_ERROR)
@@ -587,6 +591,11 @@ xz_decomp(xz_statep state)
             xz_error(state, LZMA_PROG_ERROR, "compression error");
             return -1;
         }
+        if ((state->how != GZIP) &&
+            (ret != LZMA_OK) && (ret != LZMA_STREAM_END)) {
+            xz_error(state, ret, "lzma error");
+            return -1;
+        }
     } while (strm->avail_out && ret != LZMA_STREAM_END);
 
     /* update available output and crc check value */