CVE-2024-40966

CVE Details

Release Date:	2024-07-12
Impact:	Moderate	What is this?

Description

In the Linux kernel, the following vulnerability has been resolved:\ntty: add the option to have a tty reject a new ldisc\n... and use it to limit the virtual terminals to just N_TTY. They are\nkind of special, and in particular, the 'con_write()' routine violates\nthe 'writes cannot sleep' rule that some ldiscs rely on.\nThis avoids the\nBUG: sleeping function called from invalid context at kernel/printk/printk.c:2659\nwhen N_GSM has been attached to a virtual console, and gsmld_write()\ncalls con_write() while holding a spinlock, and con_write() then tries\nto get the console lock.

See more information about CVE-2024-40966 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:	4.4
Vector String:	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Version:	3.1
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	High
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 9 (kernel)	ELSA-2024-9315	2024-11-14