CVE-2016-7421

Publication date 16 September 2016

Last updated 25 August 2025

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

4.4 · Medium

Score breakdown

Description

The pvscsi_ring_pop_req_descr 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 failure to limit process IO loop to the ring size.

Status

Package Ubuntu Release Status
qemu 16.10 yakkety
Fixed 1:2.6.1+dfsg-0ubuntu5.1
16.04 LTS xenial
Fixed 1:2.5+dfsg-5ubuntu10.6
14.04 LTS trusty
Fixed 2.0.0+dfsg-2ubuntu1.30
12.04 LTS precise Not in release
qemu-kvm 16.10 yakkety Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
12.04 LTS precise
Not affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
qemu

Severity score breakdown

CVSS version: CVSS v3.0

Base score 4.4 · Medium

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

Other references

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