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Red Hat: CVE-2022-21499: possible to use the debugger to write zero into a location of choice (Multiple Advisories)

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Red Hat: CVE-2022-21499: possible to use the debugger to write zero into a location of choice (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
06/09/2022
Created
11/10/2022
Added
11/09/2022
Modified
03/13/2024

Description

KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

References

  • DSA-5161
  • CVE-2022-21499
  • RHSA-2022:7444
  • RHSA-2022:7683
  • RHSA-2022:7933
  • RHSA-2022:8267
  • RHSA-2024:0724
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