Out-of-bounds Read Affecting kernel-rt-kvm package, versions <0:3.10.0-1062.rt56.1022.el7


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.06% (27th percentile)

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  • Snyk IDSNYK-CENTOS7-KERNELRTKVM-2141867
  • published26 Jul 2021
  • disclosed21 Dec 2018

Introduced: 21 Dec 2018

CVE-2018-16885  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Centos:7 kernel-rt-kvm to version 0:3.10.0-1062.rt56.1022.el7 or higher.

NVD Description

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

A flaw was found in the Linux kernel that allows the userspace to call memcpy_fromiovecend() and similar functions with a zero offset and buffer length which causes the read beyond the buffer boundaries, in certain cases causing a memory access fault and a system halt by accessing invalid memory address. This issue only affects kernel version 3.10.x as shipped with Red Hat Enterprise Linux 7.