NULL Pointer Dereference Affecting qemu-kvm-rhev package, versions <10:2.9.0-10.el7


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.36% (29th percentile)

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  • Snyk IDSNYK-RHEL7-QEMUKVMRHEV-5259761
  • published1 Nov 2021
  • disclosed15 Sept 2016

Introduced: 15 Sep 2016

CVE-2016-7422  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade RHEL:7 qemu-kvm-rhev to version 10:2.9.0-10.el7 or higher.
This issue was patched in RHSA-2017:2408.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-kvm-rhev package and not the qemu-kvm-rhev package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The virtqueue_map_desc function in hw/virtio/virtio.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via a large I/O descriptor buffer length value.

CVSS Base Scores

version 3.1