#VU85829 NULL pointer dereference in QEMU - CVE-2023-40360

Vulnerability identifier: #VU85829

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-2023-40360

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
QEMU
Client/Desktop applications / Virtualization software

Vendor: QEMU

Description

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

The vulnerability exists due to a NULL pointer dereference error within the nvme_directive_receive() function in hw/nvme/ctrl.c. A local user can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

QEMU: All versions

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External links
https://gitlab.com/birkelund/qemu/-/commit/6c8f8456cb0b239812dee5211881426496da7b98
https://gitlab.com/qemu-project/qemu/-/issues/1815
https://www.qemu.org/docs/master/system/security.html
https://security.netapp.com/advisory/ntap-20230915-0004/

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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.