CVE-2022-21499

MEDIUM6.7

KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown

Published Jun 9, 2022

Modified 1 years ago

Details

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).

References

WEBhttp://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html WEBhttps://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066 ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2022-21499 ADVISORYhttps://www.debian.org/security/2022/dsa-5161

CVSS Analysis

CVSS v3.1

6.7

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

HighPR:H

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

6.7/CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Ecosystems

Timeline

PublishedJun 9, 2022

ModifiedSep 24, 2024