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

CVE-2021-46894

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

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

CRITICAL · CVSS 9.8 EPSS 0.00138
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

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

Affected Products & Versions

2
huawei emuiall versions
huawei harmonyosall versions
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · psirt@huawei.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD06 Jul 2023 · 01:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://consumer.huawei.com/en/support/bulletin/2023/7/Vendor Advisory
https://device.harmonyos.com/en/docs/security/update/security-bulletins-202307-0000001587168858Vendor Advisory
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