CVE-2016-4952 Denial of service in n/a

What is CVE-2016-4952?

CVE-2016-4952 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 2 Sep 2016. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

QEMU (aka Quick Emulator), when built with VMWARE PVSCSI paravirtual SCSI bus emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds array access) via vectors related to the (1) PVSCSI_CMD_SETUP_RINGS or (2) PVSCSI_CMD_SETUP_MSG_RING SCSI command.

Weakness: CWE-787

Which versions are affected by CVE-2016-4952?

It affects 3 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Qemu Qemu.

How do I fix CVE-2016-4952?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2016-4952 being exploited?

There is no known exploitation of CVE-2016-4952 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2016-4952, GHSA-4gq5-jc6m-7vp7, UBUNTU-CVE-2016-4952.