CVE-2022-36648

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.

Published: 2023-08-22 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-36648 is rated High Risk (68.7/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.50%). High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-36648

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-17 1.24% 1.50% +0.26%
2 2026-01-23 1.65% 1.24% -0.41%
3 2026-01-16 — 1.65% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-36648

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 6.0 [email protected]

Weakness enumeration for CVE-2022-36648

OS Trackers for CVE-2022-36648

vendor priority summary link
alpine — CVE-2022-36648: 1 source package rows (qemu); 30 state rows across 2 repos (3.22-community, edge-community); fixed 0, open 30. https://security.alpinelinux.org/vuln/CVE-2022-36648
debian unimportant CVE-2022-36648 unimportant priority: Debian including 1 source packages (qemu), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5. https://security-tracker.debian.org/tracker/CVE-2022-36648
redhat — — https://access.redhat.com/security/cve/CVE-2022-36648
suse high CVE-2022-36648 severity important: SUSE including 59 source package names (kvm, qemu, …), 495 product×package rows across 17 product lines (SUSE Linux Enterprise Micro 5.5, SUSE Linux Enterprise Module for Basesystem 15 SP5, … (17 product lines)): Known Not Affected 495. https://www.suse.com/security/cve/CVE-2022-36648/
ubuntu medium CVE-2022-36648 medium priority: Ubuntu including 1 source packages (qemu), 10 status rows across 10 suites (bionic, focal, jammy, lunar, mantic, noble, oracular, trusty, upstream, xenial): not-affected 8, ignored 1, needs-triage 1. https://ubuntu.com/security/CVE-2022-36648

Affected software / configurations for CVE-2022-36648

Vendor Product Version Raw CPE
qemu qemu <= 7.0.0 cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

References for CVE-2022-36648

cvelogic Threat Intelligence