Vulnerability in Openharmony

CVE-2022-42464

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.

EPSS: 0.002 (9.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Openharmony — versions OpenHarmony-v3.1.x-Release, OpenHarmony-v3.0.x-LTS

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2022-42464?
CVE-2022-42464 is a medium-severity vulnerability in Openharmony, classified under Incorrect Default Permissions. CVSS score: 6.7/10. Published 2022-10-14.
How severe is CVE-2022-42464?
Medium severity. CVSS v3 base score is 6.7 out of 10.