CVE-2015-8558
First published: Wed Nov 04 2015(Updated: )
Qemu emulator built with the USB EHCI emulation support is vulnerable to an infinite loop issue. It occurs during communication between host controller interface(EHCI) and a respective device driver. These two communicate via a isochronous transfer descriptor list(iTD) and an infinite loop unfolds if there is a closed loop in this list. A privileges used inside guest could use this flaw to consume excessive CPU cycles & resources on the host. Upstream fix: ------------- -> git.qemu.org/?p=qemu.git;a=commit;h=156a2e4dbffa85997636a7a39ef12da6f1b40254 Reference: ---------- -> <a href="http://www.openwall.com/lists/oss-security/2015/12/14/16">http://www.openwall.com/lists/oss-security/2015/12/14/16</a>
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU qemu | <=2.5.1.1 | |
| Debian Debian Linux | =7.0 | |
| Debian Debian Linux | =8.0 | |
| ubuntu/qemu | <2.0.0+dfsg-2ubuntu1.22 | 2.0.0+dfsg-2ubuntu1.22 |
| ubuntu/qemu | <1:2.3+dfsg-5ubuntu9.2 | 1:2.3+dfsg-5ubuntu9.2 |
| ubuntu/qemu-kvm | <1.0+ | 1.0+ |
| debian/qemu | 1:5.2+dfsg-11+deb11u3 1:5.2+dfsg-11+deb11u2 1:7.2+dfsg-7+deb12u7 1:9.0.2+ds-2 1:9.1.0+ds-3 |
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Reference Links
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=156a2e4dbffa85997636a7a39ef12da6f1b40254
- http://www.debian.org/security/2016/dsa-3469
- http://www.debian.org/security/2016/dsa-3470
- http://www.debian.org/security/2016/dsa-3471
- http://www.openwall.com/lists/oss-security/2015/12/14/16
- http://www.openwall.com/lists/oss-security/2015/12/14/9
- http://www.securityfocus.com/bid/80694
- https://bugzilla.redhat.com/show_bug.cgi?id=1277983
- https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg02124.html
- https://security.gentoo.org/glsa/201602-01
- https://launchpad.net/bugs/cve/CVE-2015-8558
- https://access.redhat.com/support/policy/updates/errata/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1291310
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1291309
- http://git.qemu.org/?p=qemu.git;a=commit;h=156a2e4dbffa85997636a7a39ef12da6f1b40254
- https://www.openwall.com/lists/oss-security/2015/12/14/9
- https://security-tracker.debian.org/tracker/CVE-2015-8558
- https://ubuntu.com/security/notices/USN-2891-1
- https://www.cve.org/CVERecord?id=CVE-2015-8558
- https://nvd.nist.gov/vuln/detail/CVE-2015-8558
- https://ubuntu.com/security/CVE-2015-8558
Frequently Asked Questions
What is CVE-2015-8558?
CVE-2015-8558 is a vulnerability that allows local guest OS administrators to cause a denial of service in QEMU via a circular isochronous transfer descriptor list.
Which software versions are affected by CVE-2015-8558?
CVE-2015-8558 affects QEMU version 2.0.0+dfsg-2ubuntu1.22, 1:2.3+dfsg-5ubuntu9.2, qemu-kvm version 1.0+, and other Debian versions.
What is the severity of CVE-2015-8558?
CVE-2015-8558 has a low severity level.
How can I fix CVE-2015-8558?
To fix CVE-2015-8558, update QEMU to version 2.0.0+dfsg-2ubuntu1.22 or higher, 1:2.3+dfsg-5ubuntu9.2 or higher, or use the latest available version for qemu-kvm.
Where can I find more information about CVE-2015-8558?
You can find more information about CVE-2015-8558 on the following websites: http://www.securityfocus.com/bid/80694, http://www.debian.org/security/2016/dsa-3469, http://www.debian.org/security/2016/dsa-3470
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