CVE-2021-3753

CVE Details

Release Date:	2021-09-01
Impact:	Moderate	What is this?

Description

A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality.

See more information about CVE-2021-3753 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	4.7
Vector String:	CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Version:	3.0
Attack Vector:	Local
Attack Complexity:	High
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	None
Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (kernel-uek)	ELSA-2022-9088	2022-02-01
Oracle Linux version 7 (kernel-uek)	ELSA-2022-9088	2022-02-01
Oracle Linux version 8 (kernel)	ELSA-2024-3138	2024-05-23
Oracle VM version 3 (kernel-uek)	OVMSA-2022-0007	2022-02-01