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

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 09 Nov 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Wed, 02 Apr 2025 19:00:00 +0000

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

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: openEuler

Published:

Updated: 2026-10-08T21:14:03.467Z

Reserved: 2021-05-28T00:00:00.000Z

Link: CVE-2021-33656

cve-icon Vulnrichment

Updated: 2024-08-03T23:58:21.558Z

cve-icon NVD

Status : Modified

Published: 2022-07-18T15:15:08.043

Modified: 2026-10-08T22:17:10.127

Link: CVE-2021-33656

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-01-05T10:00:00Z

Links: CVE-2021-33656 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses