First published: Tue Aug 30 2022(Updated: )
An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted IRC with nf_conntrack_irc configured.
Credit: secalert@redhat.com secalert@redhat.com
Affected Software | Affected Version | How to fix |
---|---|---|
redhat/kernel-rt | <0:4.18.0-477.10.1.rt7.274.el8_8 | 0:4.18.0-477.10.1.rt7.274.el8_8 |
redhat/kernel | <0:4.18.0-477.10.1.el8_8 | 0:4.18.0-477.10.1.el8_8 |
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 |
Linux Linux kernel | ||
Debian Debian Linux | =10.0 | |
Debian Debian Linux | =11.0 | |
ubuntu/linux | <4.15.0-204.215 | 4.15.0-204.215 |
ubuntu/linux | <5.4.0-136.153 | 5.4.0-136.153 |
ubuntu/linux | <5.15.0-57.63 | 5.15.0-57.63 |
ubuntu/linux | <5.19.0-28.29 | 5.19.0-28.29 |
ubuntu/linux | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux | <4.4.0-239.273 | 4.4.0-239.273 |
ubuntu/linux-allwinner | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-allwinner-5.19 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-aws | <4.15.0-1150.163 | 4.15.0-1150.163 |
ubuntu/linux-aws | <5.4.0-1093.101 | 5.4.0-1093.101 |
ubuntu/linux-aws | <5.15.0-1027.31 | 5.15.0-1027.31 |
ubuntu/linux-aws | <5.19.0-1016.17 | 5.19.0-1016.17 |
ubuntu/linux-aws | <4.4.0-1117.123 | 4.4.0-1117.123 |
ubuntu/linux-aws | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-aws | <4.4.0-1155.170 | 4.4.0-1155.170 |
ubuntu/linux-aws-5.0 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-aws-5.15 | <5.15.0-1027.31~20.04.1 | 5.15.0-1027.31~20.04.1 |
ubuntu/linux-aws-5.15 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-aws-5.19 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-aws-5.4 | <5.4.0-1093.102~18.04.2 | 5.4.0-1093.102~18.04.2 |
ubuntu/linux-aws-5.4 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-aws-6.2 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-aws-6.5 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-aws-fips | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-aws-hwe | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-aws-hwe | <4.15.0-1151.164~16.04.1 | 4.15.0-1151.164~16.04.1 |
ubuntu/linux-azure | <5.4.0-1100.106 | 5.4.0-1100.106 |
ubuntu/linux-azure | <5.15.0-1030.37 | 5.15.0-1030.37 |
ubuntu/linux-azure | <5.19.0-1016.17 | 5.19.0-1016.17 |
ubuntu/linux-azure | <4.15.0-1162.177~14.04.1 | 4.15.0-1162.177~14.04.1 |
ubuntu/linux-azure | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-azure | <4.15.0-1162.177~16.04.1 | 4.15.0-1162.177~16.04.1 |
ubuntu/linux-azure-4.15 | <4.15.0-1161.176 | 4.15.0-1161.176 |
ubuntu/linux-azure-4.15 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-azure-5.15 | <5.15.0-1030.37~20.04.1 | 5.15.0-1030.37~20.04.1 |
ubuntu/linux-azure-5.15 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-azure-5.4 | <5.4.0-1100.106~18.04.1 | 5.4.0-1100.106~18.04.1 |
ubuntu/linux-azure-5.4 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-azure-6.2 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-azure-6.5 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-azure-edge | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-azure-fde | <5.4.0-1100.106 | 5.4.0-1100.106 |
ubuntu/linux-azure-fde | <5.15.0-1030.37.1 | 5.15.0-1030.37.1 |
ubuntu/linux-azure-fde | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-azure-fde-5.15 | <5.15.0-1030.37~20.04.1.1 | 5.15.0-1030.37~20.04.1.1 |
ubuntu/linux-azure-fde-5.15 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-azure-fde-5.19 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-azure-fde-6.2 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-azure-fips | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-bluefield | <5.4.0-1054.60 | 5.4.0-1054.60 |
ubuntu/linux-bluefield | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-dell300x | <4.15.0-1060.65 | 4.15.0-1060.65 |
ubuntu/linux-dell300x | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-fips | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-gcp | <5.4.0-1097.106 | 5.4.0-1097.106 |
ubuntu/linux-gcp | <5.15.0-1026.33 | 5.15.0-1026.33 |
ubuntu/linux-gcp | <5.19.0-1014.15 | 5.19.0-1014.15 |
ubuntu/linux-gcp | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-gcp | <4.15.0-1146.162~16.04.1 | 4.15.0-1146.162~16.04.1 |
ubuntu/linux-gcp-4.15 | <4.15.0-1145.161 | 4.15.0-1145.161 |
ubuntu/linux-gcp-4.15 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-gcp-5.15 | <5.15.0-1026.33~20.04.1 | 5.15.0-1026.33~20.04.1 |
ubuntu/linux-gcp-5.15 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-gcp-5.19 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-gcp-5.4 | <5.4.0-1097.106~18.04.1 | 5.4.0-1097.106~18.04.1 |
ubuntu/linux-gcp-5.4 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-gcp-6.5 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-gcp-fips | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-gke | <5.4.0-1091.98 | 5.4.0-1091.98 |
ubuntu/linux-gke | <5.15.0-1024.29 | 5.15.0-1024.29 |
ubuntu/linux-gke | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-gke-4.15 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-gke-5.0 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-gke-5.15 | <5.15.0-1027.32~20.04.1 | 5.15.0-1027.32~20.04.1 |
ubuntu/linux-gke-5.15 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-gke-5.4 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-gkeop | <5.4.0-1061.65 | 5.4.0-1061.65 |
ubuntu/linux-gkeop | <5.15.0-1012.16 | 5.15.0-1012.16 |
ubuntu/linux-gkeop | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-gkeop-5.15 | <5.15.0-1012.16~20.04.1 | 5.15.0-1012.16~20.04.1 |
ubuntu/linux-gkeop-5.15 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-gkeop-5.4 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-hwe | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-hwe | <4.15.0-206.217~16.04.1 | 4.15.0-206.217~16.04.1 |
ubuntu/linux-hwe-5.15 | <5.15.0-57.63~20.04.1 | 5.15.0-57.63~20.04.1 |
ubuntu/linux-hwe-5.15 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-hwe-5.4 | <5.4.0-136.153~18.04.1 | 5.4.0-136.153~18.04.1 |
ubuntu/linux-hwe-5.4 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-hwe-6.2 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-hwe-6.5 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-hwe-edge | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-ibm | <5.4.0-1041.46 | 5.4.0-1041.46 |
ubuntu/linux-ibm | <5.15.0-1022.25 | 5.15.0-1022.25 |
ubuntu/linux-ibm | <5.19.0-1014.15 | 5.19.0-1014.15 |
ubuntu/linux-ibm | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-ibm-5.15 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-ibm-5.4 | <5.4.0-1041.46~18.04.1 | 5.4.0-1041.46~18.04.1 |
ubuntu/linux-ibm-5.4 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-intel | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-intel-5.13 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-intel-iotg | <5.15.0-1023.28 | 5.15.0-1023.28 |
ubuntu/linux-intel-iotg | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-intel-iotg-5.15 | <5.15.0-1023.28~20.04.1 | 5.15.0-1023.28~20.04.1 |
ubuntu/linux-intel-iotg-5.15 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-iot | <5.4.0-1010.12 | 5.4.0-1010.12 |
ubuntu/linux-iot | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-kvm | <4.15.0-1135.140 | 4.15.0-1135.140 |
ubuntu/linux-kvm | <5.4.0-1083.89 | 5.4.0-1083.89 |
ubuntu/linux-kvm | <5.15.0-1025.30 | 5.15.0-1025.30 |
ubuntu/linux-kvm | <5.19.0-1015.16 | 5.19.0-1015.16 |
ubuntu/linux-kvm | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-kvm | <4.4.0-1118.128 | 4.4.0-1118.128 |
ubuntu/linux-laptop | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-lowlatency | <5.15.0-57.63 | 5.15.0-57.63 |
ubuntu/linux-lowlatency | <5.19.0-1014.15 | 5.19.0-1014.15 |
ubuntu/linux-lowlatency | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-lowlatency-hwe-5.15 | <5.15.0-58.64~20.04.1 | 5.15.0-58.64~20.04.1 |
ubuntu/linux-lowlatency-hwe-5.15 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-lowlatency-hwe-5.19 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-lowlatency-hwe-6.2 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-lowlatency-hwe-6.5 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-lts-xenial | <4.4.0-239.273~14.04.1 | 4.4.0-239.273~14.04.1 |
ubuntu/linux-lts-xenial | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-nvidia | <5.15.0-1015.15 | 5.15.0-1015.15 |
ubuntu/linux-nvidia | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-nvidia-6.5 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-oem | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-oem-5.10 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-oem-5.14 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-oem-5.17 | <5.17.0-1035.36 | 5.17.0-1035.36 |
ubuntu/linux-oem-5.17 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-oem-5.6 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-oem-6.0 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-oem-6.1 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-oem-6.5 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-oem-6.8 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-oem-osp1 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-oracle | <4.15.0-1114.125 | 4.15.0-1114.125 |
ubuntu/linux-oracle | <5.4.0-1091.100 | 5.4.0-1091.100 |
ubuntu/linux-oracle | <5.15.0-1026.32 | 5.15.0-1026.32 |
ubuntu/linux-oracle | <5.19.0-1014.16 | 5.19.0-1014.16 |
ubuntu/linux-oracle | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-oracle | <4.15.0-1115.126~16.04.1 | 4.15.0-1115.126~16.04.1 |
ubuntu/linux-oracle-5.0 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-oracle-5.13 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-oracle-5.15 | <5.15.0-1027.33~20.04.1 | 5.15.0-1027.33~20.04.1 |
ubuntu/linux-oracle-5.15 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-oracle-5.4 | <5.4.0-1091.100~18.04.1 | 5.4.0-1091.100~18.04.1 |
ubuntu/linux-oracle-5.4 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-oracle-6.5 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-raspi | <5.4.0-1078.89 | 5.4.0-1078.89 |
ubuntu/linux-raspi | <5.15.0-1022.24 | 5.15.0-1022.24 |
ubuntu/linux-raspi | <5.19.0-1011.18 | 5.19.0-1011.18 |
ubuntu/linux-raspi | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-raspi-5.4 | <5.4.0-1078.89~18.04.1 | 5.4.0-1078.89~18.04.1 |
ubuntu/linux-raspi-5.4 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-raspi2 | <4.15.0-1127.135 | 4.15.0-1127.135 |
ubuntu/linux-raspi2 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-riscv | <5.15.0-1027.31 | 5.15.0-1027.31 |
ubuntu/linux-riscv | <5.19.0-1011.12 | 5.19.0-1011.12 |
ubuntu/linux-riscv | <6.2.0-19.19.1 | 6.2.0-19.19.1 |
ubuntu/linux-riscv | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-riscv-5.15 | <5.15.0-1027.31~20.04.1 | 5.15.0-1027.31~20.04.1 |
ubuntu/linux-riscv-5.15 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-riscv-6.5 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-snapdragon | <4.15.0-1145.155 | 4.15.0-1145.155 |
ubuntu/linux-snapdragon | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-starfive | <6.2.0-1002.2 | 6.2.0-1002.2 |
ubuntu/linux-starfive | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-starfive-5.19 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-starfive-6.5 | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
ubuntu/linux-xilinx-zynqmp | <6.0~<5.4.215<5.15.71 | 6.0~ 5.4.215 5.15.71 |
debian/linux | 5.10.218-1 5.10.221-1 6.1.94-1 6.1.99-1 6.9.10-1 6.9.12-1 |
To mitigate this issue, prevent the module nf_conntrack_irc from being loaded. Please see https://access.redhat.com/solutions/41278 for information on how to blacklist a kernel module to prevent it from loading automatically.
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(Appears in the following advisories)