CVE-2023-1838

Name: CVE-2023-1838
Creator: NVD / NIST
Published: 2023-04-05T19:15:07.793+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.25%

Last modified Jun 17, 2026

CVE-2023-1838 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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.. EPSS estimates a 0.25% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.1/10

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

EPSS Probability

0.25%

16.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 4.13, < 4.14.317
Linux	Linux Kernel	>= 4.15, < 4.19.245
Linux	Linux Kernel	>= 4.20, < 5.4.196
Linux	Linux Kernel	>= 5.5, < 5.10.118
Linux	Linux Kernel	>= 5.11, < 5.15.42
Linux	Linux Kernel	>= 5.16, < 5.17.10
Netapp	H300s	All versions
Netapp	H410c	All versions
Netapp	H410s	All versions
Netapp	H500s	All versions
Netapp	H700s	All versions

References

https://lore.kernel.org/netdev/20220516084213.26854-1-jasowang%40redhat.com/T/Third Party Advisory
https://security.netapp.com/advisory/ntap-20230517-0003/Third Party Advisory, VDB Entry
https://lore.kernel.org/netdev/20220516084213.26854-1-jasowang%40redhat.com/T/Third Party Advisory
https://security.netapp.com/advisory/ntap-20230517-0003/Third Party Advisory, VDB Entry

Timeline

Published: Apr 5, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-1838?

How severe is CVE-2023-1838?

CVE-2023-1838 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.

How do I fix CVE-2023-1838?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-1838?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST