Information Exposure Affecting kernel-rt-kvm package, versions <0:3.10.0-1062.rt56.1022.el7


Severity

0.0
high
0
10

    Threat Intelligence

    EPSS
    0.04% (11th percentile)

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  • Snyk ID SNYK-CENTOS7-KERNELRTKVM-2139632
  • published 26 Jul 2021
  • disclosed 6 Jan 2019

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.

The mincore() implementation in mm/mincore.c in the Linux kernel through 4.19.13 allowed local attackers to observe page cache access patterns of other processes on the same system, potentially allowing sniffing of secret information. (Fixing this affects the output of the fincore program.) Limited remote exploitation may be possible, as demonstrated by latency differences in accessing public files from an Apache HTTP Server.

CVSS Scores

version 3.1
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Snyk

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

5.5 medium
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SUSE

5.6 medium
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Red Hat

7.1 high