CVE-2024-40966

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

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/287b569a5b914903ba7c438a3c0dbc3410ebb409	Patch
https://git.kernel.org/stable/c/3c6332f3bb1578b5b10ac2561247b1d6272ae937	Patch
https://git.kernel.org/stable/c/5920ac19964f9e20181f63b410d9200ddbf8dc86	Patch
https://git.kernel.org/stable/c/6bd23e0c2bb6c65d4f5754d1456bc9a4427fc59b	Patch
https://git.kernel.org/stable/c/287b569a5b914903ba7c438a3c0dbc3410ebb409	Patch
https://git.kernel.org/stable/c/3c6332f3bb1578b5b10ac2561247b1d6272ae937	Patch
https://git.kernel.org/stable/c/5920ac19964f9e20181f63b410d9200ddbf8dc86	Patch
https://git.kernel.org/stable/c/6bd23e0c2bb6c65d4f5754d1456bc9a4427fc59b	Patch
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2024-07-12 13:15

Updated : 2025-11-03 22:17

NVD link : CVE-2024-40966

Mitre link : CVE-2024-40966

CVE.ORG link : CVE-2024-40966

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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