What is CVE-2023-1838?

CVE-2023-1838 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, classified as a Use After Free flaw (CWE-416). CVE-2023-1838 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-1838?

CVE-2023-1838 has a CVSS score of 7.1 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

Is there a patch available for CVE-2023-1838?

No patch is currently available for CVE-2023-1838. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2023-1838 actively exploited?

CVE-2023-1838 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2023-1838

High

A use-after-free flaw was found in vhost_net_set_backend in drivers/vhost/net.c in virtio network subcomponent in the Linux kernel due to a double fget. This flaw could allow a local attacker to crash the system, and could even lead to a kernel information leak problem.

Package Linux Kernel

Published 2023-04-05

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2023-1838 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2023-1838 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel.org
https://lore.kernel.org/netdev/20220516084213.26854-1-jasowang%40redhat.com/T/

Third Party Advisory
Security
https://security.netapp.com/advisory/ntap-20230517-0003/

Third Party Advisory VDB Entry

Details

CVE ID CVE-2023-1838

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2023-04-05

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-1838?

CVE-2023-1838 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 , classified as an Use After Free flaw (CWE-416) . CVE-2023-1838 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-1838?

CVE-2023-1838 has a CVSS score of 7.1 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
Is there a patch available for CVE-2023-1838?

No patch is currently available for CVE-2023-1838. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2023-1838 actively exploited?

No — CVE-2023-1838 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. View CWE-416 on MITRE CWE →