Out-of-Bounds Affecting kernel-rt-debug-debuginfo package, versions <0:4.18.0-305.12.1.rt7.84.el8_4


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-ROCKY8-KERNELRTDEBUGDEBUGINFO-3288142
  • published3 Feb 2023
  • disclosed26 May 2021

Introduced: 26 May 2021

CVE-2021-22543  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 kernel-rt-debug-debuginfo to version 0:4.18.0-305.12.1.rt7.84.el8_4 or higher.
This issue was patched in RLSA-2021:3088.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-debuginfo package and not the kernel-rt-debug-debuginfo package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation.

CVSS Scores

version 3.1