Integer underflow in Linux kernel x86 kernel

1) Integer underflow

EUVDB-ID: #VU104790

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-49610

CWE-ID: CWE-191 - Integer underflow

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to integer underflow within the vmx_vcpu_run() function in arch/x86/kvm/vmx/vmx.c, within the SYM_FUNC_START() function in arch/x86/kvm/vmx/vmenter.S, within the check_bugs() function in arch/x86/kernel/cpu/bugs.c, within the common() function in arch/x86/kernel/asm-offsets.c. A local user can execute arbitrary code.

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/07853adc29a058c5fd143c14e5ac528448a72ed9
https://git.kernel.org/stable/c/afd743f6dde87296c6f3414706964c491bb85862

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.