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OpenAdvisories
High · 7.5 CVE-2023-1390 EUVD-2023-23646GHSA-875q-9h9j-qhmh

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 unk…

Published Mar 16, 2023 · Updated Sep 18, 2026 · Assigned by redhat

Package: linux Package: linux Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-edge Package: linux-azure-fips Package: linux-dell300x Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-edge Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-kvm Package: linux-lts-xenial Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.6 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.8 Package: linux-snapdragon Package: linux-vmware Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

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.

Affected products

VendorProductAffectedFixed
— Linux kernel (TIPC kernel module) Fixed in kernel 5.11-rc4 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 linux 5.10.12-1 —
Debian 13 linux 5.10.12-1 —
Debian 12 linux 5.10.12-1 —
ReleasePackageFixed inAdvisory
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux-riscv +2 No fix yet —
Ubuntu 20.04 LTS linux 5.4.0-67.75 —
Ubuntu 20.04 LTS linux-aws 5.4.0-1039.41 —
Ubuntu 20.04 LTS linux-azure 5.4.0-1041.43 —
Ubuntu 20.04 LTS linux-gcp 5.4.0-1038.41 —
Ubuntu 20.04 LTS linux-gke 5.4.0-1037.39 —
Ubuntu 20.04 LTS linux-gkeop 5.4.0-1011.12 —
Ubuntu 20.04 LTS linux-kvm 5.4.0-1034.35 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1039.42 —
Ubuntu 20.04 LTS linux-raspi 5.4.0-1030.33 —
Ubuntu 20.04 LTS linux-riscv +22 No fix yet —
Ubuntu 18.04 LTS linux 4.15.0-137.141 —
Ubuntu 18.04 LTS linux-aws 4.15.0-1095.102 —
Ubuntu 18.04 LTS linux-aws-5.4 5.4.0-1039.41~18.04.1 —
Ubuntu 18.04 LTS linux-azure-4.15 4.15.0-1109.121 —
Ubuntu 18.04 LTS linux-azure-5.4 5.4.0-1041.43~18.04.1 —
Ubuntu 18.04 LTS linux-dell300x 4.15.0-1013.17 —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 18.04 LTS linux-gcp-4.15 4.15.0-1094.107 —
Ubuntu 18.04 LTS linux-gcp-5.4 5.4.0-1038.41~18.04.1 —
Ubuntu 18.04 LTS linux-hwe-5.4 5.4.0-67.75~18.04.1 —
Ubuntu 18.04 LTS linux-kvm 4.15.0-1086.88 —
Ubuntu 18.04 LTS linux-oracle 4.15.0-1066.74 —
Ubuntu 18.04 LTS linux-oracle-5.4 5.4.0-1039.42~18.04.1 —
Ubuntu 18.04 LTS linux-raspi-5.4 5.4.0-1030.33~18.04.1 —
Ubuntu 18.04 LTS linux-raspi2 4.15.0-1080.85 —
Ubuntu 18.04 LTS linux-snapdragon 4.15.0-1097.106 —
Ubuntu 16.04 LTS linux-aws-hwe 4.15.0-1095.102~16.04.1 —
Ubuntu 16.04 LTS linux-azure 4.15.0-1109.121~16.04.1 —
Ubuntu 16.04 LTS linux-gcp 4.15.0-1094.107~16.04.1 —
Ubuntu 16.04 LTS linux-hwe 4.15.0-137.141~16.04.1 —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu 16.04 LTS linux-oracle 4.15.0-1066.74~16.04.1 —
Show 8 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro FIPS 20.04 LTS linux-aws-fips +2 No fix yet —
Ubuntu Pro FIPS 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1069.73+fips2 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1073.76+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1067.71~20.04.1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2038.40 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2021.24 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1054.62 —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips 4.4.0-1088.95 —
Ubuntu Pro 16.04 LTS linux 4.4.0-240.274 USN-6045-1
Ubuntu Pro 16.04 LTS linux-aws 4.4.0-1156.171 USN-6045-1
Ubuntu Pro 16.04 LTS linux-kvm 4.4.0-1119.129 USN-6045-1
Ubuntu Pro 14.04 LTS linux-aws 4.4.0-1118.124 USN-6045-1
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1109.121~14.04.1 —
Ubuntu Pro 14.04 LTS linux-lts-xenial 4.4.0-240.274~14.04.1 USN-6045-1
ReleasePackageFixed inAdvisory
RHEL 8 kernel-rt +12 4.18.0-305.rt7.72.el8 RHSA-2021:1739
RHEL 8 perf +26 4.18.0-305.el8 RHSA-2021:1578
Show 4 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
RHEL 8.2 TUS kernel-rt +12 4.18.0-193.109.1.rt13.160.el8_2 RHSA-2023:4126
RHEL 8.2 TUS perf +17 4.18.0-193.109.1.el8_2 RHSA-2023:4125
RHEL 8.2 E4S kpatch-patch-4_18_0-193_100_1 1-2.el8_2 RHSA-2023:4146
RHEL 8.2 E4S kpatch-patch-4_18_0-193_105_1 1-1.el8_2 RHSA-2023:4146
RHEL 8.2 E4S kpatch-patch-4_18_0-193_95_1 1-4.el8_2 RHSA-2023:4146
RHEL 8.2 E4S kpatch-patch-4_18_0-193_98_1 1-3.el8_2 RHSA-2023:4146
RHEL 8.2 E4S perf +18 4.18.0-193.109.1.el8_2 RHSA-2023:4125
RHEL 8.2 AUS perf +17 4.18.0-193.109.1.el8_2 RHSA-2023:4125
RHEL 8.1 E4S kpatch-patch-4_18_0-147_76_1 +1 1-4.el8_1 RHSA-2023:3191
RHEL 8.1 E4S kpatch-patch-4_18_0-147_78_1 1-3.el8_1 RHSA-2023:3191
RHEL 8.1 E4S kpatch-patch-4_18_0-147_80_1 1-2.el8_1 RHSA-2023:3191
RHEL 8.1 E4S kpatch-patch-4_18_0-147_81_1 1-1.el8_1 RHSA-2023:3191
RHEL 8.1 E4S perf +18 4.18.0-147.83.1.el8_1 RHSA-2023:3190
ReleasePackageFixed inAdvisory
SLES 15 SP3 kernel-64kb +7 5.3.18-150300.59.118.1 SUSE-SU-2023:1811-1
SLES 15 SP3 kernel-default-base 5.3.18-150300.59.118.1.150300.18.68.1 SUSE-SU-2023:1811-1
SLES 15 SP2 kernel-default-base 5.3.18-150200.24.148.1.150200.9.71.1 SUSE-SU-2023:1800-1
SLES 15 SP2 kernel-docs +5 5.3.18-150200.24.148.1 SUSE-SU-2023:1800-1
SLES 15 SP1 kernel-docs +5 4.12.14-150100.197.142.1 SUSE-SU-2023:1848-1
SLES 12 SP5 kernel-azure +2 4.12.14-16.130.1 SUSE-SU-2023:1801-1
SLES 12 SP5 kernel-docs +4 4.12.14-122.156.1 SUSE-SU-2023:1803-1
SLES 12 SP4 drbd 9.0.14+git.62f906cf-4.26.2 SUSE-SU-2023:2232-1
SLES 12 SP4 kernel-syms +2 4.12.14-95.125.1 SUSE-SU-2023:2232-1
Show 24 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES 12 SP2 kernel-syms +2 4.4.121-92.205.1 SUSE-SU-2023:2805-1
SLES for SAP 15 SP3 kernel-default-base 5.3.18-150300.59.118.1.150300.18.68.1 SUSE-SU-2023:1811-1
SLES for SAP 15 SP3 kernel-docs +5 5.3.18-150300.59.118.1 SUSE-SU-2023:1811-1
SLES for SAP 15 SP2 kernel-default-base 5.3.18-150200.24.148.1.150200.9.71.1 SUSE-SU-2023:1800-1
SLES for SAP 15 SP2 kernel-docs +5 5.3.18-150200.24.148.1 SUSE-SU-2023:1800-1
SLES for SAP 15 SP1 kernel-docs +4 4.12.14-150100.197.142.1 SUSE-SU-2023:1848-1
SLES for SAP 12 SP5 kernel-azure +2 4.12.14-16.130.1 SUSE-SU-2023:1801-1
SLES for SAP 12 SP5 kernel-syms +2 4.12.14-122.156.1 SUSE-SU-2023:1803-1
SLE Real Time 15 SP3 kernel-default-base 5.3.18-150300.59.118.1.150300.18.68.1 SUSE-SU-2023:1811-1
SLE Real Time 15 SP3 kernel-docs +5 5.3.18-150300.59.118.1 SUSE-SU-2023:1811-1
SLE Real Time 12 SP5 kernel-rt +3 4.12.14-10.121.1 SUSE-SU-2023:1894-1
SLE Micro 5.2 kernel-default 5.3.18-150300.59.118.1 SUSE-SU-2023:1811-1
SLE Micro 5.2 kernel-default-base 5.3.18-150300.59.118.1.150300.18.68.1 SUSE-SU-2023:1811-1
SLE Micro 5.2 kernel-rt 5.3.18-150300.124.1 SUSE-SU-2023:1892-1
SLE Micro 5.1 kernel-default 5.3.18-150300.59.118.1 SUSE-SU-2023:1811-1
SLE Micro 5.1 kernel-default-base 5.3.18-150300.59.118.1.150300.18.68.1 SUSE-SU-2023:1811-1
SLE Micro 5.1 kernel-rt 5.3.18-150300.124.1 SUSE-SU-2023:1892-1
SLE Live Patching 15 SP3 kernel-default 5.3.18-150300.59.118.1 SUSE-SU-2023:1811-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_20 14-150300.2.2 SUSE-SU-2023:2710-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_22 13-150300.2.2 SUSE-SU-2023:2741-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_23 12-150300.2.2 SUSE-SU-2023:2727-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_28 6-150300.2.2 SUSE-SU-2023:2724-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_30 4-150300.2.1 SUSE-SU-2023:2701-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_31 1-150300.7.3.1 SUSE-SU-2023:1811-1
SLE Live Patching 15 SP2 kernel-default 5.3.18-150200.24.148.1 SUSE-SU-2023:1800-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_29 12-150200.2.2 SUSE-SU-2023:2694-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_30 9-150200.2.2 SUSE-SU-2023:2695-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_32 6-150200.2.2 SUSE-SU-2023:2727-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_33 5-150200.2.2 SUSE-SU-2023:2698-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_35 1-150200.5.3.1 SUSE-SU-2023:1800-1
SLE Live Patching 15 SP1 kernel-default 4.12.14-150100.197.142.1 SUSE-SU-2023:1848-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_32 11-150100.2.2 SUSE-SU-2023:2702-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_36 6-150100.2.2 SUSE-SU-2023:2679-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_37 5-150100.2.2 SUSE-SU-2023:2681-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_39 1-150100.3.5.1 SUSE-SU-2023:1848-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.156.1 SUSE-SU-2023:1803-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_33 +1 11-2.2 SUSE-SU-2023:2718-1, SUSE-SU-2023:2702-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_38 6-2.2 SUSE-SU-2023:2686-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_39 5-2.2 SUSE-SU-2023:2719-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_41 3-2.1 SUSE-SU-2023:2689-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_42 1-8.3.1 SUSE-SU-2023:1803-1
SLE Live Patching 12 SP4 kernel-default 4.12.14-95.125.1 SUSE-SU-2023:2232-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_28 11-2.3 SUSE-SU-2023:2660-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_31 8-2.2 SUSE-SU-2023:2708-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_33 5-2.2 SUSE-SU-2023:2690-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_34 4-2.1 SUSE-SU-2023:2666-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_35 1-6.5.1 SUSE-SU-2023:2232-1
SLE HPC 15 SP3 kernel-64kb +6 5.3.18-150300.59.118.1 SUSE-SU-2023:1811-1
SLE HPC 15 SP3 kernel-default-base 5.3.18-150300.59.118.1.150300.18.68.1 SUSE-SU-2023:1811-1
SLE HPC 15 SP2 kernel-default-base 5.3.18-150200.24.148.1.150200.9.71.1 SUSE-SU-2023:1800-1
SLE HPC 15 SP2 kernel-docs +5 5.3.18-150200.24.148.1 SUSE-SU-2023:1800-1
SLE HPC 15 SP1 kernel-docs +4 4.12.14-150100.197.142.1 SUSE-SU-2023:1848-1
SUSE Real Time Module 15 SP3 kernel-rt +3 5.3.18-150300.124.1 SUSE-SU-2023:1892-1
SUSE OpenStack Cloud Crowbar 9 kernel-syms +2 4.12.14-95.125.1 SUSE-SU-2023:2232-1
SUSE OpenStack Cloud 9 kernel-syms +2 4.12.14-95.125.1 SUSE-SU-2023:2232-1
SUSE Manager Server 4.2 kernel-default-base 5.3.18-150300.59.118.1.150300.18.68.1 SUSE-SU-2023:1811-1
SUSE Manager Server 4.2 kernel-source +3 5.3.18-150300.59.118.1 SUSE-SU-2023:1811-1
SUSE Manager Proxy 4.2 kernel-default-base 5.3.18-150300.59.118.1.150300.18.68.1 SUSE-SU-2023:1811-1
SUSE Manager Proxy 4.2 kernel-source +2 5.3.18-150300.59.118.1 SUSE-SU-2023:1811-1
SUSE Enterprise Storage 7.1 kernel-64kb +6 5.3.18-150300.59.118.1 SUSE-SU-2023:1811-1
SUSE Enterprise Storage 7.1 kernel-default-base 5.3.18-150300.59.118.1.150300.18.68.1 SUSE-SU-2023:1811-1
SUSE Enterprise Storage 7 kernel-default-base 5.3.18-150200.24.148.1.150200.9.71.1 SUSE-SU-2023:1800-1
SUSE Enterprise Storage 7 kernel-docs +5 5.3.18-150200.24.148.1 SUSE-SU-2023:1800-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.4 dtb-aarch64 5.3.18-150300.59.118.1 SUSE-SU-2023:1811-1
openSUSE Leap 15.4 kernel-debug +4 4.12.14-150100.197.142.1 SUSE-SU-2023:1848-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2 kernel-livepatch-4.14.219-161.340 1.0-0.amzn2 ALAS2-2021-1600
Amazon Linux 2 perf +8 4.14.219-161.340.amzn2 ALAS2-2021-1600

Advisories 39

References