CVE-2016-1922: Null Pointer Dereference
Last updated 24 July 2024
Other sources
QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while doing I/O port write operations via hmp interface. In that, 'currentcpu' remains null, which leads to the null pointer dereference. A user or process could use this flaw to crash the QEMU instance, resulting in DoS issue.
— Launchpad
Qemu emulator built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while doing I/O port write operations via hmp interface. In that, 'currentcpu' remains null, which leads to the null pointer dereference.
A user/process could use this flaw to crash the Qemu instance, resulting in DoS issue.
Upstream patch: --------------- -> https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.html
Reference: ---------- -> http://www.openwall.com/lists/oss-security/2016/01/16/6
— Red Hat
Affected Software
Remediation
Event History
Frequently Asked Questions
What is CVE-2016-1922?
CVE-2016-1922 is a vulnerability in QEMU (aka Quick Emulator) allowing a null pointer dereference on 32-bit Windows guests during I/O port write operations.
How severe is CVE-2016-1922?
CVE-2016-1922 has a low severity rating.
Which software versions are affected by CVE-2016-1922?
QEMU versions 2.0.0+dfsg-2ubuntu1.22 and 1:2.3+dfsg-5ubuntu9.2 are affected by CVE-2016-1922.
How can I fix CVE-2016-1922?
To fix CVE-2016-1922, update QEMU to version 2.0.0+dfsg-2ubuntu1.22 or 1:2.3+dfsg-5ubuntu9.2.
Where can I find more information about CVE-2016-1922?
You can find more information about CVE-2016-1922 at the following references: [Link1](http://www.securityfocus.com/bid/81058), [Link2](http://www.debian.org/security/2016/dsa-3469), [Link3](http://www.debian.org/security/2016/dsa-3470).