Detections
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CVE-2021-33656

medium

Description

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

References

https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-33656&packageName=kernel

https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html

https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/releases/5.10.127/vt-drop-old-font-ioctls.patch

http://www.openwall.com/lists/oss-security/2022/07/19/3

Details

Source: Mitre, NVD

Published: 2022-07-18

Updated: 2025-04-02

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 6.8

Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Medium

EPSS

EPSS: 0.00011