7.5
CWE
1050
Advisory Published
CVE Published
Updated

CVE-2023-1390

First published: Sat Jan 09 2021(Updated: )

A remote denial of service vulnerability was found in the Linux kernel’s TIPC kernel module. The while loop in tipc_link_xmit() hits an unknown state while attempting to parse SKBs, which are not in the queue. Sending two small UDP packets to a system with a UDP bearer results in the CPU utilization for the system to instantly spike to 100%, causing a denial of service condition.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/kernel-rt<0:4.18.0-305.rt7.72.el8
0:4.18.0-305.rt7.72.el8
redhat/kernel<0:4.18.0-305.el8
0:4.18.0-305.el8
redhat/kernel<0:4.18.0-147.83.1.el8_1
0:4.18.0-147.83.1.el8_1
redhat/kernel<0:4.18.0-193.109.1.el8_2
0:4.18.0-193.109.1.el8_2
redhat/kernel-rt<0:4.18.0-193.109.1.rt13.160.el8_2
0:4.18.0-193.109.1.rt13.160.el8_2
redhat/kernel<5.11
5.11
Linux Kernel>=4.3<4.9.253
Linux Kernel>=4.10<4.14.217
Linux Kernel>=4.15<4.19.170
Linux Kernel>=4.20<5.4.92
Linux Kernel>=5.5<5.10.10
Linux Kernel=5.11-rc1
Linux Kernel=5.11-rc2
Linux Kernel=5.11-rc3
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.119-1
6.12.11-1
6.12.12-1

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Frequently Asked Questions

  • What is the severity of CVE-2023-1390?

    The severity of CVE-2023-1390 is classified as high due to the potential for remote denial of service.

  • How do I fix CVE-2023-1390?

    To fix CVE-2023-1390, update your kernel to the specified versions that contain the security patch.

  • Which versions of the Linux kernel are affected by CVE-2023-1390?

    CVE-2023-1390 affects several versions of the Linux kernel, specifically those prior to 4.18.0-305.el8.

  • What are the symptoms of exploitation of CVE-2023-1390?

    Exploitation of CVE-2023-1390 may lead to increased CPU utilization, causing system performance degradation.

  • Is there a workaround for CVE-2023-1390 if I cannot immediately update my kernel?

    A potential workaround for CVE-2023-1390 is to limit UDP traffic to the affected system until an update can be applied.

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