Qemu emulator built with the Q35 chipset based pc system emulator is vulnerable to a heap based buffer overflow. It occurs during VM guest migration, as more(8 bytes) data is moved than allocated memory area. A privileged guest user could use this issue to corrupt the VM guest image, potentially leading to a DoS. This issue affects q35 machine types. Upstream fix: ------------- -> git.qemu.org/?p=qemu.git;a=commit;h=d9a3b33d2c9f996537b7f1d0246dee2d0120cefb Reference: ---------- -> http://www.openwall.com/lists/oss-security/2015/12/24/1
Created attachment 1096797 [details] Patch
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 does not affect the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 7. This issue does not affect the Red Hat Enterprise Linux 7 based versions of the qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.
Created xen tracking bugs for this issue: Affects: fedora-all [bug 1294028]
Created qemu tracking bugs for this issue: Affects: fedora-all [bug 1294027]
qemu-2.4.1-5.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
qemu-2.3.1-10.fc22 has been pushed to the Fedora 22 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.