Qemu emulator built with a VMWARE VMXNET3 paravirtual NIC emulator support is vulnerable to a memory leakage flaw. It occurs when a guest repeatedly tries to activate the vmxnet3 device. A privileged guest user could use this flaw to leak host memory, resulting in DoS on the host. Upstream patch: --------------- -> https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg02299.html Reference: ---------- -> http://www.openwall.com/lists/oss-security/2015/12/15/10
Created xen tracking bugs for this issue: Affects: fedora-all [bug 1289817]
Created qemu tracking bugs for this issue: Affects: fedora-all [bug 1289818]
Statement: This issue does not affect the versions of the kvm and xen packages as shipped with Red Hat Enterprise Linux 5. This issue does not affect the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 6, and the Red Hat Enterprise Linux 6 based versions of qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3. This issue affects the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 7. This issue affects the Red Hat Enterprise Linux 7 based versions of the qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3. This has been rated as having Low security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
Acknowledgements: This issue was discovered by Qinghao Tang of QIHU 360 Marvel Team.
*** Bug 1272156 has been marked as a duplicate of this bug. ***
qemu-2.4.1-6.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
xen-4.5.2-7.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
xen-4.5.2-7.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
qemu-2.3.1-11.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.