CVE-2023-6546

CVE Details

Release Date:	2023-12-21
Impact:	Important	What is this?

Description

A race condition was found in the GSM 0710 tty multiplexor in the Linux kernel. This issue occurs when two threads execute the GSMIOC_SETCONF ioctl on the same tty file descriptor with the gsm line discipline enabled, and can lead to a use-after-free problem on a struct gsm_dlci while restarting the gsm mux. This could allow a local unprivileged user to escalate their privileges on the system.

See more information about CVE-2023-6546 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:	7.0
Vector String:	CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Version:	3.0
Attack Vector:	Local
Attack Complexity:	High
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 8 (kernel)	ELSA-2024-1607	2024-04-10
Oracle Linux version 8 (kernel-uek)	ELSA-2023-12858	2023-10-10
Oracle Linux version 9 (kernel)	ELSA-2024-2394	2024-05-02
Oracle Linux version 9 (kernel-uek)	ELSA-2023-12858	2023-10-10