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Use After Free Affecting kernel-rt-debug-kvm package, versions <0:3.10.0-1127.rt56.1093.el7

Severity

 Recommended
0.0
medium
0
10

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.11% (46th percentile)

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  • Snyk ID SNYK-CENTOS7-KERNELRTDEBUGKVM-2154953
  • published 26 Jul 2021
  • disclosed 4 Jul 2019
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Introduced: 4 Jul 2019

CVE-2019-13233 Open this link in a new tab
CWE-416 Open this link in a new tab

How to fix?

Upgrade Centos:7 kernel-rt-debug-kvm to version 0:3.10.0-1127.rt56.1093.el7 or higher.

NVD Description

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

In arch/x86/lib/insn-eval.c in the Linux kernel before 5.1.9, there is a use-after-free for access to an LDT entry because of a race condition between modify_ldt() and a #BR exception for an MPX bounds violation.

References