CVE-2022-21499

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 v3.0 6.7 MEDIUM
CVSS v2.0 4.6 MEDIUM

6.7^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 0.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.6^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066	Mailing List Patch Vendor Advisory
https://www.debian.org/security/2022/dsa-5161	Third Party Advisory
http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html	Third Party Advisory VDB Entry

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:oracle:linux:6:-::::::
	cpe:2.3:o:oracle:linux:7:-::::::
	cpe:2.3:o:oracle:linux:8:-::::::

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

Information

Published : 2022-06-09 14:15

Updated : 2022-09-28 13:00

NVD link : CVE-2022-21499

Mitre link : CVE-2022-21499

JSON object : View

CWE

CWE-787

Out-of-bounds Write

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Products Affected

debian

debian_linux

oracle

linux

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