How severe is CVE-2022-42464?

CVE-2022-42464 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-42464 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-42464?

CVE-2022-42464 affects Openharmony. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-42464?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-42464 published?

CVE-2022-42464 was published on 2022-10-14 and last updated on 2026-06-17.

CVE-2022-42464

CVE-2022-42464 is a medium-severity vulnerability in Openharmony with a CVSS 3.x base score of 6.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-276.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-276
Affected product: Openharmony
Published: 2022-10-14
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2022-42464?: CVE-2022-42464 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-42464 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-42464?: CVE-2022-42464 affects Openharmony. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-42464?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-42464 published?: CVE-2022-42464 was published on 2022-10-14 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:openharmony:openharmony:*:*:*:*:*:*:*:*

More vulnerabilities in Openharmony

CVE-2022-38700 — High (CVSS 8.8): OpenHarmony-v3.1.1 and prior versions have a permission bypass vulnerability. LAN attackers can bypass permission…
CVE-2022-43451 — High (CVSS 8.4): OpenHarmony-v3.1.2 and prior versions had an Multiple path traversal vulnerability in appspawn and nwebspawn services.…
CVE-2022-42488 — High (CVSS 8.4): OpenHarmony-v3.1.2 and prior versions have a Missing permission validation vulnerability in param service of startup…
CVE-2022-45877 — High (CVSS 8.3): OpenHarmony-v3.1.4 and prior versions had an vulnerability. PIN code is transmitted to the peer device in plain text…
CVE-2022-42463 — High (CVSS 8.3): OpenHarmony-v3.1.2 and prior versions have an authenication bypass vulnerability in a callback handler function of…
CVE-2022-36423 — High (CVSS 7.4): OpenHarmony-v3.1.2 and prior versions have an incorrect configuration of the cJSON library, which leads a Stack…

All CVEs affecting Openharmony →

Other CWE-276 (Incorrect Default Permissions) vulnerabilities

CVE-2022-42150 — Critical (CVSS 10.0): TinyLab linux-lab v1.1-rc1 and cloud-labv0.8-rc2, v1.1-rc1 are vulnerable to insecure permissions. The default…
CVE-2020-29492 — Critical (CVSS 10.0): Dell Wyse ThinOS 8.6 and prior versions contain an insecure default configuration vulnerability. A remote…
CVE-2020-29491 — Critical (CVSS 10.0): Dell Wyse ThinOS 8.6 and prior versions contain an insecure default configuration vulnerability. A remote…
CVE-2025-40585 — Critical (CVSS 9.9): A vulnerability has been identified in Energy Services (All versions with G5DFR). Affected solutions using G5DFR…
CVE-2019-19896 — Critical (CVSS 9.9): In IXP EasyInstall 6.2.13723, there is Remote Code Execution via weak permissions on the Engine Service share. The…
CVE-2020-37129 — Critical (CVSS 9.8): Memu Play 7.1.3 contains an insecure folder permissions vulnerability that allows low-privileged users to modify the…

Browse all CWE-276 (Incorrect Default Permissions) vulnerabilities →