From: Jiri Denemark <jdenemar@redhat.com>
Date: Thu, 9 Feb 2017 09:49:23 +0000 (+0100)
Subject: qemu_blockjob: Avoid dereferencing NULL on OOM
X-Git-Tag: CVE-2017-2635~155
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2cc317b1f52a98493cc7b34cf1a2d3a7b9bc292c;p=thirdparty%2Flibvirt.git

qemu_blockjob: Avoid dereferencing NULL on OOM

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
---

diff --git a/src/qemu/qemu_blockjob.c b/src/qemu/qemu_blockjob.c
index 4ada4cd277..985fae1e96 100644
--- a/src/qemu/qemu_blockjob.c
+++ b/src/qemu/qemu_blockjob.c
@@ -123,7 +123,8 @@ qemuBlockJobEventProcess(virQEMUDriverPtr driver,
                 if ((persistDisk = virDomainDiskByName(vm->newDef,
                                                        disk->dst, false))) {
                     copy = virStorageSourceCopy(disk->mirror, false);
-                    if (virStorageSourceInitChainElement(copy,
+                    if (!copy ||
+                        virStorageSourceInitChainElement(copy,
                                                          persistDisk->src,
                                                          true) < 0) {
                         VIR_WARN("Unable to update persistent definition "