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CVE-2016-7909

Status Candidate

Overview

The pcnet_rdra_addr function in hw/net/pcnet.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0.

Related Files

Gentoo Linux Security Advisory 201611-11
Posted Nov 19, 2016
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201611-11 - Multiple vulnerabilities have been found in QEMU, the worst of which could cause a Denial of Service condition. Versions less than 2.7.0-r6 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2016-7161, CVE-2016-7423, CVE-2016-7466, CVE-2016-7907, CVE-2016-7908, CVE-2016-7909, CVE-2016-7994, CVE-2016-8576, CVE-2016-8577, CVE-2016-8578, CVE-2016-8668, CVE-2016-8669, CVE-2016-8909, CVE-2016-8910, CVE-2016-9102, CVE-2016-9103, CVE-2016-9104, CVE-2016-9105
SHA-256 | f65df48e99a50acb2abf2cd6d8af4cac73a92399ae257cbb493db0dd555963e0
Ubuntu Security Notice USN-3125-1
Posted Nov 10, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3125-1 - Zhenhao Hong discovered that QEMU incorrectly handled the Virtio module. A privileged attacker inside the guest could use this issue to cause QEMU to consume resources, resulting in a denial of service. Li Qiang discovered that QEMU incorrectly handled VMWARE VMXNET3 network card emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2016-5403, CVE-2016-6833, CVE-2016-6834, CVE-2016-6835, CVE-2016-6836, CVE-2016-6888, CVE-2016-7116, CVE-2016-7155, CVE-2016-7156, CVE-2016-7157, CVE-2016-7161, CVE-2016-7170, CVE-2016-7421, CVE-2016-7422, CVE-2016-7423, CVE-2016-7466, CVE-2016-7908, CVE-2016-7909, CVE-2016-7994, CVE-2016-7995, CVE-2016-8576, CVE-2016-8577, CVE-2016-8578, CVE-2016-8668, CVE-2016-8909, CVE-2016-8910, CVE-2016-9101, CVE-2016-9102
SHA-256 | ebbb9dd99d4d4747c3700c5ee2ba26996c0c622e1a49ae4a8d2ca5b4b29fb07d
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