CVE-2016-8576
First published: Thu May 05 2016(Updated: )
Quick Emulator(Qemu) built with the USB xHCI controller emulation support is vulnerable to an infinite loop issue. It could occur while processing USB command ring in 'xhci_ring_fetch'. A privileged user/process inside guest could use this issue to crash the Qemu process on the host leading to DoS. Upstream patch -------------- -> <a href="https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg01265.html">https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg01265.html</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU | <=2.7.1 | |
| SUSE Linux | =42.2 | |
| Red Hat OpenStack for IBM Power | =6.0 | |
| Red Hat OpenStack for IBM Power | =7.0 | |
| Red Hat OpenStack for IBM Power | =8 | |
| Red Hat OpenStack for IBM Power | =9 | |
| Red Hat OpenStack for IBM Power | =10 | |
| Red Hat OpenStack for IBM Power | =11 | |
| Red Hat Enterprise Virtualization | =4.0 | |
| Red Hat Enterprise Linux | =7.0 | |
| Debian | =8.0 |
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Reference Links
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=05f43d44e4bc26611ce25fd7d726e483f73363ce
- http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
- http://www.openwall.com/lists/oss-security/2016/10/10/12
- http://www.openwall.com/lists/oss-security/2016/10/10/6
- http://www.securityfocus.com/bid/93469
- https://access.redhat.com/errata/RHSA-2017:2392
- https://access.redhat.com/errata/RHSA-2017:2408
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
- https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg01265.html
- https://security.gentoo.org/glsa/201611-11
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=1154206
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=1154206&action=edit
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1382323
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1382322
- https://bugzilla.redhat.com/show_bug.cgi?id=1333425
Frequently Asked Questions
What is the severity of CVE-2016-8576?
CVE-2016-8576 is classified as a high severity vulnerability due to its potential to cause a denial of service.
How do I fix CVE-2016-8576?
To fix CVE-2016-8576, upgrading QEMU to version 2.8.0 or higher is recommended.
Which software is affected by CVE-2016-8576?
CVE-2016-8576 affects QEMU versions up to 2.7.1 and specific versions of Red Hat OpenStack, openSUSE, and Debian.
What type of attack is possible with CVE-2016-8576?
CVE-2016-8576 allows a privileged user within a guest to crash the QEMU process on the host, leading to a denial of service.
Is CVE-2016-8576 exploitable remotely?
CVE-2016-8576 requires local access to the guest environment for exploitation, making it less likely to be a remote attack.
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