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CVE-2022-21499 Details

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).

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.7 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CNA: [email protected]CVSS-B:6.7 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html	CVE	Third Party AdvisoryVDB Entry
https://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066	CVE	Mailing ListPatchVendor Advisory
https://www.debian.org/security/2022/dsa-5161	CVE	Third Party Advisory
http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html	[email protected]	Third Party AdvisoryVDB Entry
https://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066	[email protected]	Mailing ListPatchVendor Advisory
https://www.debian.org/security/2022/dsa-5161	[email protected]	Third Party Advisory

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-787	Out-of-bounds Write	[email protected]

Affected Products

Product	Versions
oracle linux	6 - 7 - 8 -
CPE cpe:2.3:o:oracle:linux:6:-:::::: cpe:2.3:o:oracle:linux:7:-:::::: cpe:2.3:o:oracle:linux:8:-:::::: Remediation No remediation found in references.
debian debian linux	11.0
CPE cpe:2.3:o:debian:debian_linux:11.0:::::::* Remediation No remediation found in references.

Change History

9 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Sep 28, 2022	Modified Analysis	[email protected]
Sep 8, 2022	CVE Modified	[email protected]
Aug 30, 2022	CVE Modified	[email protected]
Jun 17, 2022	Initial Analysis	[email protected]
Jun 13, 2022	CVE Modified	[email protected]