Race Condition Affecting kernel-rt-kvm package, versions <0:3.10.0-327.36.3.rt56.238.el7


Severity

0.0
high
0
10

    Threat Intelligence

    Exploit Maturity
    Mature
    EPSS
    87.94% (99th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-CENTOS7-KERNELRTKVM-2068952
  • published 26 Jul 2021
  • disclosed 19 Oct 2016

How to fix?

Upgrade Centos:7 kernel-rt-kvm to version 0:3.10.0-327.36.3.rt56.238.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.

Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect handling of a copy-on-write (COW) feature to write to a read-only memory mapping, as exploited in the wild in October 2016, aka "Dirty COW."

References

CVSS Scores

version 3.1
Expand this section

Snyk

7.8 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
Expand this section

NVD

7.8 high
Expand this section

Red Hat

7.8 high