The pvscsi_convert_sglist function in hw/scsi/vmw_pvscsi.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging an incorrect cast.
Weakness
The product does not correctly convert an object, resource, or structure from one type to a different type.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Qemu | Qemu | * | 2.7.1 (including) |
| Qemu | Ubuntu | devel | * |
| Qemu | Ubuntu | esm-infra-legacy/trusty | * |
| Qemu | Ubuntu | esm-infra/xenial | * |
| Qemu | Ubuntu | trusty | * |
| Qemu | Ubuntu | trusty/esm | * |
| Qemu | Ubuntu | upstream | * |
| Qemu | Ubuntu | xenial | * |
| Qemu | Ubuntu | yakkety | * |
| Qemu-kvm | Ubuntu | upstream | * |
References
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=49adc5d3f8c6bb75e55ebfeab109c5c37dea65e8
- http://www.openwall.com/lists/oss-security/2016/09/06/3
- http://www.openwall.com/lists/oss-security/2016/09/07/2
- http://www.securityfocus.com/bid/92774
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
- https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg00772.html
- https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg01246.html
- https://security.gentoo.org/glsa/201609-01
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=49adc5d3f8c6bb75e55ebfeab109c5c37dea65e8
- http://www.openwall.com/lists/oss-security/2016/09/06/3
- http://www.openwall.com/lists/oss-security/2016/09/07/2
- http://www.securityfocus.com/bid/92774
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
- https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg00772.html
- https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg01246.html
- https://security.gentoo.org/glsa/201609-01