CVE Vulnerability

CVE-2021-33656

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

6.8 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 0.9 / Impact : 5.9

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/releases/5.10.127/vt-drop-old-font-ioctls.patch Patch Third Party Advisory
https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-33656&packageName=kernel Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/07/19/3 Mailing List Patch
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:o:huawei:openeuler:20.03:sp3:*:*:lts:*:*:*
cpe:2.3:o:huawei:openeuler:20.03:sp1:*:*:lts:*:*:*
cpe:2.3:o:huawei:openeuler:20.03:-:*:*:lts:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Information

Published : 2022-07-18 03:15

Updated : 2022-10-29 02:52

NVD link : CVE-2021-33656

Mitre link : CVE-2021-33656

Products Affected
No products.
CWE
CWE-787