Out-of-Bounds Affecting kernel-rt-trace-devel package, versions <0:3.10.0-862.rt56.804.el7


Severity

0.0
high
0
10

    Threat Intelligence

    EPSS
    2.53% (91st percentile)

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  • Snyk ID SNYK-CENTOS7-KERNELRTTRACEDEVEL-2100285
  • published 26 Jul 2021
  • disclosed 5 Dec 2017

How to fix?

Upgrade Centos:7 kernel-rt-trace-devel to version 0:3.10.0-862.rt56.804.el7 or higher.

NVD Description

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

A use-after-free flaw was found in fs/userfaultfd.c in the Linux kernel before 4.13.6. The issue is related to the handling of fork failure when dealing with event messages. Failure to fork correctly can lead to a situation where a fork event will be removed from an already freed list of events with userfaultfd_ctx_put().

CVSS Scores

version 3.1
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Snyk

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

8.1 high
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Red Hat

7 high