CVE-2021-33656

kernel: when setting font with malicious data by ioctl PIO_FONT, kernel will write memory out of bounds

Published Jul 18, 2022 CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.

Analysis

No analysis available yet

Remediation

No remediation available yet

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3131-1 linux security update
EUVD EUVD EUVD-2021-20333 When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.
Ubuntu USN Ubuntu USN USN-5580-1 Linux kernel (AWS) vulnerabilities
Ubuntu USN Ubuntu USN USN-5589-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5591-1 Linux kernel vulnerability
Ubuntu USN Ubuntu USN USN-5591-2 Linux kernel (HWE) vulnerability
Ubuntu USN Ubuntu USN USN-5591-3 Linux kernel vulnerability
Ubuntu USN Ubuntu USN USN-5591-4 Linux kernel (AWS) vulnerability
Ubuntu USN Ubuntu USN USN-5592-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5595-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5597-1 Linux kernel (Oracle) vulnerability
Ubuntu USN Ubuntu USN USN-5598-1 Linux kernel (Oracle) vulnerability
Ubuntu USN Ubuntu USN USN-5600-1 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-5603-1 Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN Ubuntu USN USN-5605-1 Linux kernel (Azure CVM) vulnerabilities
Ubuntu USN Ubuntu USN USN-5650-1 Linux kernel vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Openatom
Openatom openeuler
CPEs cpe:2.3:o:huawei:openeuler:20.03:-:*:*:lts:*:*:*
cpe:2.3:o:huawei:openeuler:20.03:sp1:*:*:lts:*:*:*
cpe:2.3:o:huawei:openeuler:20.03:sp3:*:*:lts:*:*:*
cpe:2.3:o:openatom:openeuler:20.03:-:*:*:lts:*:*:*
cpe:2.3:o:openatom:openeuler:20.03:sp1:*:*:lts:*:*:*
cpe:2.3:o:openatom:openeuler:20.03:sp3:*:*:lts:*:*:*
Vendors & Products Huawei
Huawei openeuler
Openatom
Openatom openeuler
Weaknesses

Sources

Status
PUBLISHED
Assigner
openEuler
Published
Updated
Oct 8, 2026, 9:14 PM
Reserved
May 28, 2021, 12:00 AM
Status
Modified
Published
Jul 18, 2022, 3:15 PM
Modified
Oct 8, 2026, 10:17 PM
Severity
Moderate
Public date
Jan 5, 2021, 10:00 AM