Qemu emulator built with the IP checksum routines is vulnerable to an OOB read access issue. It could occur while computing checksum for TCP/UDP packets, as the function uses payload length from the packet without checking against the data buffer size. A user inside guest could use this flaw to read excessive bytes or crash the Qemu process resulting in DoS. Upstream patch: --------------- -> git.qemu.org/?p=qemu.git;a=commit;h=362786f14a753d8a5256ef97d7c10ed576d6572b Reference: ---------- -> http://www.openwall.com/lists/oss-security/2016/03/03/9
Acknowledgments: Name: Ling Liu (Qihoo 360 Inc.)
Statement: 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/.
Created xen tracking bugs for this issue: Affects: fedora-all [bug 1309565]
Created qemu tracking bugs for this issue: Affects: fedora-all [bug 1309564]
xen-4.5.2-9.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
xen-4.5.2-9.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
qemu-2.4.1-8.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
qemu-2.5.0-10.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
qemu-2.3.1-13.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2017:0083 https://rhn.redhat.com/errata/RHSA-2017-0083.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Via RHSA-2017:0309 https://rhn.redhat.com/errata/RHSA-2017-0309.html
This issue has been addressed in the following products: Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6 Via RHSA-2017:0334 https://rhn.redhat.com/errata/RHSA-2017-0334.html
This issue has been addressed in the following products: RHEV 3.X Hypervisor and Agents for RHEL-6 Via RHSA-2017:0344 https://rhn.redhat.com/errata/RHSA-2017-0344.html
This issue has been addressed in the following products: RHEV 3.X Hypervisor and Agents for RHEL-7 RHEV 4.X RHEV-H and Agents for RHEL-7 Via RHSA-2017:0350 https://rhn.redhat.com/errata/RHSA-2017-0350.html