TI-2022-20663 Aliases CVE-2022-42464 GHSA-26fr-8fj2-mr2r

Incorrect default permissions in OpenHarmony

LOW 35CWE-276Published 2022-10-14 · Updated 2025-05-14

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

OpenHarmony-v3.1.2 and prior versions, 3.0.6 and prior versions have a Kernel memory pool override vulnerability in /dev/mmz_userdev device driver. The impact depends on the privileges of the attacker. The unprivileged process run on the device could disclose sensitive information including kernel pointer, which could be used in further attacks. The processes with system user UID run on the device would be able to mmap memory pools used by kernel and override them which could be used to gain kernel code execution on the device, gain root privileges, or cause device reboot.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00204 10th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
OpenHarmony	OpenHarmony	OpenHarmony-v3.1.x-Release – 3.1.2; OpenHarmony-v3.0.x-LTS – 3.0.6	—	No fix listed	CNA

OpenHarmony VendorOpenHarmony Affected OpenHarmony-v3.1.x-Release – 3.1.2; OpenHarmony-v3.0.x-LTS – 3.0.6 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:openharmony:openharmony::::::::	3.0 – 3.0.6; 3.1 – 3.1.2	Vulnerable	OpenHarmony

cpe:2.3:a:openharmony:openharmony:*:*:*:*:*:*:*:* Versions 3.0 – 3.0.6; 3.1 – 3.1.2 Vulnerable ·OpenHarmony

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2022-42464
2026-10-03 Alias added: GHSA-26fr-8fj2-mr2r

References

Advisory 1

https://gitee.com/openharmony/security/blob/master/en/security-disclosure/2022/2022-10.md

TI-2022-20662 Improper authentication in OpenHarmony CVSS 3.1HIGH 8.8
TI-2022-20682 Improper authentication in OpenHarmony CVSS 3.1HIGH 8.4
TI-2022-18233 Authentication bypass in OpenHarmony CVSS 3.1HIGH 8.8
TI-2022-22675 Improper authentication in OpenHarmony CVSS 3.1HIGH 8.3
TI-2022-21243 Multiple path traversal in appspawn and nwebspawn services. CVSS 3.1HIGH 8.4
TI-2022-21851 Buffer overflow in OpenHarmony CVSS 3.1HIGH 7.8

See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences