#VU97825 Improper Initialization in Linux kernel - CVE-2024-46864

Vulnerability identifier: #VU97825

Vulnerability 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-2024-46864

CWE-ID: CWE-665

Exploitation vector: Local

Exploit availability: No

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

Vendor: Linux Foundation

Description

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

The vulnerability exists due to improper initialization within the hv_machine_shutdown() function in arch/x86/kernel/cpu/mshyperv.c, within the EXPORT_SYMBOL_GPL(), register_syscore_ops() and wrmsrl() functions in arch/x86/hyperv/hv_init.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

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External links
https://git.kernel.org/stable/c/2ae1beb3ab4f28868cc5d1541d05e1fbee3ad825
https://git.kernel.org/stable/c/d6f018a3b49d0a94ddbd0e479c2af6b19724e434
https://git.kernel.org/stable/c/b9af6418279c4cf73ca073f8ea024992b38be8ab

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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.