7.1
CWE
416
Advisory Published
CVE Published
Updated

CVE-2023-1838: Use After Free

First published: Wed May 18 2022(Updated: )

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.

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/kernel 5.18<25
25
Linux Kernel<5.18_25
Linux Kernel>=4.13<4.14.317
Linux Kernel>=4.15<4.19.245
Linux Kernel>=4.20<5.4.196
Linux Kernel>=5.5<5.10.118
Linux Kernel>=5.11<5.15.42
Linux Kernel>=5.16<5.17.10
NetApp H300S Firmware
NetApp H410C Firmware
NetApp H410S Firmware
NetApp H500e Firmware
NetApp H700S
IBM Security Verify Governance - Identity Manager<=ISVG 10.0.2
IBM Security Verify Governance - Identity Manager<=ISVG 10.0.2
debian/linux
5.10.223-1
5.10.234-1
6.1.129-1
6.1.128-1
6.12.21-1

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2023-1838?

    CVE-2023-1838 has a high severity due to the potential for local attackers to crash systems or exploit kernel information leaks.

  • How do I fix CVE-2023-1838?

    To fix CVE-2023-1838, update your Linux kernel to versions that are patched, such as those above 5.18 and specified remedied versions from Debian and IBM.

  • What are the affected systems for CVE-2023-1838?

    CVE-2023-1838 affects various versions of the Linux kernel, IBM Security Verify Governance, and specific NetApp models.

  • What type of vulnerability is CVE-2023-1838?

    CVE-2023-1838 is a use-after-free vulnerability in the Linux kernel, specifically in the vhost_net_set_backend function.

  • Can CVE-2023-1838 lead to remote code execution?

    While CVE-2023-1838 primarily allows for system crashes and information leaks, it does not directly lead to remote code execution.

Contact

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