Vulnerability · Published Oct 14, 2022 · Assigned by OpenHarmony
CVE-2022-42464Kernel memory pool override 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 furth ...
Medium 6.7
In plain English
A medium-severity incorrect default permissions in OpenHarmony from OpenHarmony. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| OpenHarmony | OpenHarmony | OpenHarmony-v3.1.x-Release – through 3.1.2OpenHarmony-v3.0.x-LTS – through 3.0.6 |
Weakness: CWE-276 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H