CVE-2022-21499
mediumpriority · track · 18EPSS 0.006 · 49 %ileDEEURUUSEPSS · scored 2026-10-27
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).
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.9–6.7
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (32)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2022-0016Linux Kernel: Mehrere SchwachstellenDeutsch2022-05-24csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen im Linux Kernel und Oracle Linux ausnutzen, um seine Privilegien zu erhöhen und Sicherheitsvorkehrungen zu umgehen.
- WID-SEC-W-2024-0794Dell ECS: Mehrere SchwachstellenDeutsch2024-04-04csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Dell ECS ausnutzen, um seine Privilegien zu erweitern, beliebigen Programmcode mit Administratorrechten auszuführen, Informationen offenzulegen, Dateien zu manipulieren, einen Cross-Site-Scripting-Angriff durchzuführen, Sicherheitsvorkehrungen zu umgehen oder einen Denial of Service Zustand herbeizuführen.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (35)
External citations — patches, advisories, analysis.
- https://cxsecurity.com/cveshow/CVE-2022-21499/cnnvd
- https://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066cnnvd
- https://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.htmlcnnvd
- https://packetstormsecurity.com/files/167447/Ubuntu-Security-Notice-USN-5471-1.htmlcnnvd
- https://packetstormsecurity.com/files/167545/Ubuntu-Security-Notice-USN-5484-1.htmlcnnvd
- https://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.htmlcnnvd
- https://vigilance.fr/vulnerability/Linux-kernel-privilege-escalation-via-debugger-38432cnnvd
- https://www.auscert.org.au/bulletins/ESB-2022.2703cnnvd
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