CVE-2022-21499

kernel: possible to use the debugger to write zero into a location of choice

Published Jun 9, 2022 CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed
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).

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-5161-1 linux security update
EUVD EUVD EUVD-2022-26723 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).
Ubuntu USN Ubuntu USN USN-5465-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5466-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5467-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5468-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5469-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5470-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-5471-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-5484-1 Linux kernel vulnerabilities
History
Type Values Removed Values Added
Metrics epss

{'score': 0.00139}

epss

{'score': 0.00144}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
oracle
Published
Updated
Sep 24, 2024, 8:05 PM
Reserved
Nov 15, 2021, 12:00 AM
Status
Modified
Published
Jun 9, 2022, 9:15 PM
Modified
Jun 17, 2026, 4:26 AM
Severity
Moderate
Public date
May 24, 2022, 5:00 PM