Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Physical
0

CVE-2021-33656

Disclosure Date: July 18, 2022
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.

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CVSS V3 Severity and Metrics
Base Score:
6.8 Medium
Impact Score:
5.9
Exploitability Score:
0.9
Vector:
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector (AV):
Physical
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Vendors

  • debian,
  • huawei,
  • linux

Products

  • debian linux 10.0,
  • linux kernel,
  • openeuler 20.03
Technical Analysis