#VU104717 Input validation error in Linux kernel - CVE-2022-49559

Vulnerability identifier: #VU104717

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-2022-49559

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 nested_vmx_vmexit() function in arch/x86/kvm/vmx/nested.c, within the nested_svm_vmexit() function in arch/x86/kvm/svm/nested.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/45846661d10422ce9e22da21f8277540b29eca22
https://git.kernel.org/stable/c/7de373c9b48229e428ecdb8fbde269c5a8617fd2
https://git.kernel.org/stable/c/8d3a2aa0976f57320ba89baf9d57fb158dd0cd0d
https://git.kernel.org/stable/c/f476a59d5c86c02a79eef893c6da86735f2977ac

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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.