Input validation error in Linux kernel hv driver

1) Input validation error

EUVDB-ID: #VU104921

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-2022-49054

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation within the hyperv_panic_event(), hyperv_die_event() and vmbus_bus_init() functions 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/1b576e81d31b56b248316b8ff816b1cc5c4407c7
https://git.kernel.org/stable/c/6230bc50d6d21cae4c084766623d0a6d17958721
https://git.kernel.org/stable/c/9f8b577f7b43b2170628d6c537252785dcc2dcea

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.