The ehci_process_itd function in hw/usb/hcd-ehci.c in QEMU allows local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via a circular isochronous transfer descriptor (iTD) list.
Weakness
The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Qemu | Qemu | * | 2.5.1.1 (including) |
| Qemu | Ubuntu | devel | * |
| Qemu | Ubuntu | esm-infra-legacy/trusty | * |
| Qemu | Ubuntu | trusty | * |
| Qemu | Ubuntu | trusty/esm | * |
| Qemu | Ubuntu | vivid | * |
| Qemu | Ubuntu | wily | * |
| Qemu-kvm | Ubuntu | precise | * |
References
- 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
- 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