NULL Pointer Dereference Affecting qemu-img package, versions <10:1.5.3-86.el7


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-RHEL7-QEMUIMG-4989685
  • published26 Jul 2021
  • disclosed17 Sept 2014

Introduced: 17 Sep 2014

CVE-2014-3640  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade RHEL:7 qemu-img to version 10:1.5.3-86.el7 or higher.
This issue was patched in RHSA-2015:0349.

NVD Description

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

The sosendto function in slirp/udp.c in QEMU before 2.1.2 allows local users to cause a denial of service (NULL pointer dereference) by sending a udp packet with a value of 0 in the source port and address, which triggers access of an uninitialized socket.

CVSS Scores

version 3.1