#VU95095 Input validation error in Linux kernel - CVE-2024-42135

Vulnerability identifier: #VU95095

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-2024-42135

CWE-ID: CWE-20

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 input validation within the vhost_task_fn(), EXPORT_SYMBOL_GPL() and vhost_task_create() functions in kernel/vhost_task.c, within the __vhost_worker_flush(), vhost_vq_reset(), vhost_worker(), vhost_worker_create(), __vhost_vq_attach_worker() and vhost_free_worker() functions in drivers/vhost/vhost.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/abe067dc3a662eef7d5cddbbc41ed50a0b68b0af
https://git.kernel.org/stable/c/dec987fe2df670827eb53b97c9552ed8dfc63ad4
https://git.kernel.org/stable/c/db5247d9bf5c6ade9fd70b4e4897441e0269b233

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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.