Quick Emulator(Qemu) built with the ESP/NCR53C9x controller emulation support is vulnerable to an OOB write access issue. The controller uses 16-byte FIFO buffer for command and information transfer. The OOB write occurs while reading from information transfer buffer via non-DMA mode in routine get_cmd(). A privileged user inside guest could use this flaw to crash the Qemu process resulting in DoS. Upstream patch: --------------- -> https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg00150.html Reference: ---------- -> http://www.openwall.com/lists/oss-security/2016/06/02/9
Acknowledgments: Name: Li Qiang (360.cn Inc.)
Created qemu tracking bugs for this issue: Affects: fedora-all [bug 1341932]
xen-4.5.3-8.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
xen-4.6.1-11.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
qemu-2.6.0-4.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
qemu-2.3.1-16.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
qemu-2.4.1-11.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.