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Vulnerability record · CVE-2022-36648 · published 22 August 2023

CVE-2022-36648: Qemu null pointer dereference vulnerability

Qemu · Qemu

The hardware emulation in the of_dpa_cmd_add_l2_flood of rocker device model in QEMU, as used in 7.0.0 and earlier, allows remote attackers to crash the host qemu and potentially execute code on the host via execute a malformed program in the guest OS. Note: This has been disputed by multiple third parties as not a valid vulnerability due to the rocker device not falling within the virtualization use case.

10.0 CVSS 3.1 Critical EPSS 1.7% · top 23.2% CWE-476 · NULL pointer dereference
10.0CVSS 3.1 base score
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

The hardware emulation in the of_dpa_cmd_add_l2_flood of rocker device model in QEMU, as used in 7.0.0 and earlier, allows remote attackers to crash the host qemu and potentially execute code on the host via execute a malformed program in the guest OS. Note: This has been disputed by multiple third parties as not a valid vulnerability due to the rocker device not falling within the virtualization use case.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://lists.nongnu.org/archive/html/qemu-devel/2022-06/msg04469.html Mailing ListPatch
https://security.netapp.com/advisory/ntap-20231006-0004/
https://lists.nongnu.org/archive/html/qemu-devel/2022-06/msg04469.html Mailing ListPatch
https://security.netapp.com/advisory/ntap-20231006-0004/

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2017-16845Qemu improper input validation vulnerabilityhw/input/ps2.c in Qemu does not validate 'rptr' and 'count' values during guest migration, leading to out-of-bounds access.EPSS 2.9%10.0CVE-2015-8556Qemu race condition vulnerabilityLocal privilege escalation vulnerability in the Gentoo QEMU package before 2.5.0-r1.EPSS 13%9.9CVE-2016-9603Qemu heap-based buffer overflow vulnerabilityA heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support before 2.9; the issue could occur when a V…EPSS 4.4%9.9CVE-2017-2620Qemu out-of-bounds write vulnerabilityQuick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could…EPSS 3.6%9.9CVE-2009-3616Qemu use after free vulnerabilityMultiple use-after-free vulnerabilities in vnc.c in the VNC server in QEMU 0.10.6 and earlier might allow guest OS users to execute arbitrary code on…EPSS 3.9%9.8CVE-2019-12928Qemu os command injection vulnerabilityThe QMP migrate command in QEMU version 4.0.0 and earlier is vulnerable to OS command injection, which allows the remote attacker to achieve code exe…EPSS 23%9.8CVE-2019-12929Qemu os command injection vulnerabilityThe QMP guest_exec command in QEMU 4.0.0 and earlier is prone to OS command injection, which allows the attacker to achieve code execution, denial of…EPSS 4.9%9.8CVE-2018-20815Qemu memory buffer overflow vulnerabilityIn QEMU 3.1.0, load_device_tree in device_tree.c calls the deprecated load_image function, which has a buffer overflow risk.EPSS 4.4%

Source: NIST National Vulnerability Database (record CVE-2022-36648), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.