Improper Initialization in Linux kernel hv driver

1) Improper Initialization

EUVDB-ID: #VU104860

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-49098

CWE-ID: CWE-665 - Improper Initialization

Exploit availability: No

Description

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

The vulnerability exists due to improper initialization within the vmbus_exit() function in drivers/hv/vmbus_drv.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

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

External links

https://git.kernel.org/stable/c/2133c422a103cf7c7768c37b9ac382e73b691892
https://git.kernel.org/stable/c/3d0078f8bddd58d9bb1ad40bbe929f8633abb276
https://git.kernel.org/stable/c/5ea98d0f5f035c1bcf1517ccec0e024ae35a48b2
https://git.kernel.org/stable/c/6b4c0149a56147b29169e07000d566162892722a
https://git.kernel.org/stable/c/792f232d57ff28bbd5f9c4abe0466b23d5879dc8
https://git.kernel.org/stable/c/cf580d2e3884dbafd6b90269b03a24d661578624
https://git.kernel.org/stable/c/dcd6b1a624c0ffa21034d8b1e02e9d068458f596

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.