Vulnerability identifier: #VU63961

Vulnerability risk: Low

CVSSv3.1:

CVE-ID: CVE-2022-21499

CWE-ID: CWE-284

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to improper access restrictions to the kernel debugger when booted in secure boot environments. A local privileged user can bypass UEFI Secure Boot restrictions.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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CPE

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links
http://www.openwall.com/lists/oss-security/2022/05/24/7
http://www.openwall.com/lists/oss-security/2022/05/24/10
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=eadb2f47a3ced5c64b23b90fd2a3463f63726066

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?