Integer Overflow or Wraparound Affecting kernel-rt-kvm package, versions <0:3.10.0-957.rt56.910.el7


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-CENTOS7-KERNELRTKVM-2111652
  • published26 Jul 2021
  • disclosed21 Mar 2018

Introduced: 21 Mar 2018

CVE-2018-8781  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Centos:7 kernel-rt-kvm to version 0:3.10.0-957.rt56.910.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.

The udl_fb_mmap function in drivers/gpu/drm/udl/udl_fb.c at the Linux kernel version 3.4 and up to and including 4.15 has an integer-overflow vulnerability allowing local users with access to the udldrmfb driver to obtain full read and write permissions on kernel physical pages, resulting in a code execution in kernel space.

CVSS Scores

version 3.1