Information disclosure in Linux kernel Virtio drivers

Published: 2022-11-30

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2022-2308
CWE-ID	CWE-908
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Linux kernel Operating systems & Components / Operating system
Vendor	Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Use of uninitialized resource

EUVDB-ID: #VU69765

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2022-2308

CWE-ID: CWE-908 - Use of Uninitialized Resource

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to usage of uninitialized resources in vDPA with VDUSE backend in Linux kernel. A local user can pass specially crafted data to the Virtio drivers, trigger uninitialized usage of resources and gain access to sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

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

External links

http://bugzilla.redhat.com/show_bug.cgi?id=2103900

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?