Vulnerability identifier: #VU64076

Vulnerability risk: Low

CVSSv3.1: 5.2 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1651

CWE-ID: CWE-401

Exploitation vector: Local

Exploit availability: No

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

Vendor: Linux Foundation

Description
The vulnerability allows a local privileged user to perform DoS attack on the target system.

The vulnerability exists due memory leak in the Linux kernel in acrn_dev_ioctl in the drivers/virt/acrn/hsm.c() function in how the ACRN Device Model emulates virtual NICs in VM. A local privileged user can leak unauthorized kernel information, causing a denial of service.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://ubuntu.com/security/notices/USN-5469-1
http://bugzilla.redhat.com/show_bug.cgi?id=2083455

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.