Vulnerability identifier: #VU16684

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-20126

CWE-ID: CWE-401

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
QEMU
Client/Desktop applications / Virtualization software

Vendor: QEMU

Description
The vulnerability allows a local attacker to cause DoS condition on the target system.

The vulnerability exists due to memory leakage issue in hw/rdma/vmw/pvrdma_cmd.c when errors are mishandled. A local attacker can create_cq and create_qp memory leaks, resulting in DoS.

Mitigation
Install update from vendor's website.

Vulnerable software versions

QEMU: 0.1 - 3.0.0

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External links
http://lists.gnu.org/archive/html/qemu-devel/2018-12/msg02824.html

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.