What is CVE-2023-34324?

CVE-2023-34324 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10, classified as a Uncontrolled Resource Consumption flaw (CWE-400). CVE-2023-34324 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-34324?

CVE-2023-34324 has a CVSS score of 4.9 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2023-34324?

No patch is currently available for CVE-2023-34324. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2023-34324 actively exploited?

CVE-2023-34324 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Uncontrolled Resource Consumption (CWE-400)?

The product does not properly control the amount of resources it consumes, leading to exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/400.html

CVE-2023-34324

Medium

Closing of an event channel in the Linux kernel can result in a deadlock. This happens when the close is being performed in parallel to an unrelated Xen console action and the handling of a Xen console interrupt in an unprivileged guest. The closing of an event channel is e.g. triggered by removal of a paravirtual device on the other side. As this action will cause console messages to be issued on the other side quite often, the chance of triggering the deadlock is not neglectable. Note that 32-bit Arm-guests are not affected, as the 32-bit Linux kernel on Arm doesn't use queued-RW-locks, which are required to trigger the issue (on Arm32 a waiting writer doesn't block further readers to get the lock).

Package Linux Kernel

Published 2024-01-05

Last modified 2025-11-04

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

4.9

out of 10

Medium

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-400

CVE-2023-34324 is a Uncontrolled Resource Consumption vulnerability

What is Uncontrolled Resource Consumption?

The product does not properly control the amount of resources it consumes, leading to exhaustion. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2023-34324 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
Debian Security
https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
Xenbits
http://xenbits.xen.org/xsa/advisory-441.html
Kernel patch commit
https://xenbits.xenproject.org/xsa/advisory-441.html
Patch

Details

CVE ID CVE-2023-34324

Severity Medium

CVSS score 4.9 / 10

CVSS version 3.1

Published 2024-01-05

Modified 2025-11-04

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-34324?

CVE-2023-34324 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10 , classified as an Uncontrolled Resource Consumption flaw (CWE-400) . CVE-2023-34324 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-34324?

CVE-2023-34324 has a CVSS score of 4.9 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2023-34324?

No patch is currently available for CVE-2023-34324. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2023-34324 actively exploited?

No — CVE-2023-34324 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Uncontrolled Resource Consumption (CWE-400)?

The product does not properly control the amount of resources it consumes, leading to exhaustion. View CWE-400 on MITRE CWE →