NULL pointer dereference in Linux kernel kvm vmx



| Updated: 2025-05-10
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-49932
CWE-ID CWE-476
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU108467

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-2022-49932

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to NULL pointer dereference within the vmx_cleanup_l1d_flush() and vmx_init() functions in arch/x86/kvm/vmx/vmx.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.1 - 6.3 rc6

CPE2.3 External links

https://git.kernel.org/stable/c/e136e969d268b9b89329c816c002e53f60e82985
https://git.kernel.org/stable/c/e28533c08023c4b319b7f2cd77f3f7c9204eb517
https://git.kernel.org/stable/c/e32b120071ea114efc0b4ddd439547750b85f618
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.20
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.7
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3


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.



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