Use After Free (UAF) vulnerability in the uinput module.Successful exploitation of this vulnerability may lead to kernel privilege escalati…

published 2023-07-06 3 y ago modified 2026-06-17 4 mo ago also EUVD-2021-33544

cvss: 9.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 39%
public exploits: 0; none known

Use After Free (UAF) vulnerability in the uinput module.Successful exploitation of this vulnerability may lead to kernel privilege escalation.

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: 23 mo ago (2024-11-19)

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Huawei HarmonyOS
Huawei EMUI

Classification

Weakness

CWE-269 Improper Privilege Management
CWE-416 Use After Free

References

consumer.huawei.com /en/support/bulletin/2023/7/
vendor-advisory
device.harmonyos.com /en/docs/security/update/security-bulletins-202307-0000001587168858
vendor-advisory

Sources

CVE List CVE-2021-46894
NVD CVE-2021-46894

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Summary