high
7.8
CWE
459
Advisory Published
CVE Published
Updated

CVE-2022-33743

First published: Mon Jul 04 2022(Updated: )

A flaw memory leak in the Linux Kernel XDP (eXpress Data Path) was found. It can lead to denial of service for some specific configurations like if the non root privileged user from the host system can send malicious packets to the guest systems. This flaw actual for the Linux Kernel versions 5.9 - 5.18. References: <a href="https://www.openwall.com/lists/oss-security/2022/07/05/5">https://www.openwall.com/lists/oss-security/2022/07/05/5</a> <a href="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/net/xen-netfront.c?h=v5.19-rc7&amp;id=f63c2c2032c2e3caad9add3b82cc6e91c376fd26">https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/net/xen-netfront.c?h=v5.19-rc7&amp;id=f63c2c2032c2e3caad9add3b82cc6e91c376fd26</a>

Credit: security@xen.org

Affected SoftwareAffected VersionHow to fix
redhat/kernel<0:5.14.0-284.11.1.el9_2
0:5.14.0-284.11.1.el9_2
redhat/kernel-rt<0:5.14.0-284.11.1.rt14.296.el9_2
0:5.14.0-284.11.1.rt14.296.el9_2
redhat/Linux kernel<5.19
5.19
Linux Kernel>=5.9<=5.18
Xen XAPI
Debian Linux=11.0
debian/linux
5.10.223-1
5.10.234-1
6.1.129-1
6.1.128-1
6.12.21-1

Remedy

http://www.openwall.com/lists/oss-security/2022/07/05/5

Remedy

http://xenbits.xen.org/xsa/advisory-405.html

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2022-33743?

    CVE-2022-33743 is classified as a high severity vulnerability due to its potential to cause denial of service.

  • How do I fix CVE-2022-33743?

    To mitigate CVE-2022-33743, upgrade to a patched version of the Linux Kernel, specifically 5.14.0-284.11.1.el9_2 or later.

  • Which Linux Kernel versions are affected by CVE-2022-33743?

    CVE-2022-33743 affects Linux Kernel versions from 5.9 up to, but not including, 5.19.

  • Can non-root users exploit CVE-2022-33743?

    Yes, a non-root privileged user can exploit CVE-2022-33743 by sending malicious packets to guest systems.

  • What systems are impacted by CVE-2022-33743?

    CVE-2022-33743 affects systems running specific versions of the Linux Kernel, Xen hypervisor, and Debian Linux.

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