Race Condition Affecting kernel-rt-trace-devel package, versions *


Severity

medium

    Threat Intelligence

    EPSS
    0.06% (24th percentile)

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  • Snyk ID SNYK-CENTOS7-KERNELRTTRACEDEVEL-2011736
  • published 26 Jul 2021
  • disclosed 2 Jun 2020

How to fix?

There is no fixed version for Centos:7 kernel-rt-trace-devel.

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.

An issue was discovered in the Linux kernel before 5.7.3, related to mm/gup.c and mm/huge_memory.c. The get_user_pages (aka gup) implementation, when used for a copy-on-write page, does not properly consider the semantics of read operations and therefore can grant unintended write access, aka CID-17839856fd58.

CVSS Scores

version 3.1
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Snyk

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

3.6 low
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SUSE

3.6 low
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Red Hat

3.6 low