Denial of service in Linux kernel virtio

1) Return of pointer value outside of expected range

EUVDB-ID: #VU73768

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-22998

CWE-ID: CWE-466 - Return of pointer value outside of expected range

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to unexpected value of the pointer returned as value in the drm_gem_shmem_get_sg_table() function in drivers/gpu/drm/virtio/virtgpu_object.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 6.0.3

External links

http://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.3
http://github.com/torvalds/linux/commit/c24968734abfed81c8f93dc5f44a7b7a9aecadfa

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.