First published: Wed Aug 10 2022(Updated: )
A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service.
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 Layer 2 Tunneling Protocol | <6.0 | |
Fedoraproject Fedora | =35 | |
Fedoraproject Fedora | =36 | |
Fedoraproject Fedora | =37 | |
ubuntu/linux | <5.4.0-147.164 | 5.4.0-147.164 |
ubuntu/linux | <5.15.0-70.77 | 5.15.0-70.77 |
ubuntu/linux | <5.19.0-42.43 | 5.19.0-42.43 |
ubuntu/linux | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-allwinner | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-allwinner-5.19 | <5.19.0-1012.12~22.04.1 | 5.19.0-1012.12~22.04.1 |
ubuntu/linux-allwinner-5.19 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-aws | <5.4.0-1100.108 | 5.4.0-1100.108 |
ubuntu/linux-aws | <5.15.0-1034.38 | 5.15.0-1034.38 |
ubuntu/linux-aws | <5.19.0-1025.26 | 5.19.0-1025.26 |
ubuntu/linux-aws | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-aws-5.0 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-aws-5.15 | <5.15.0-1034.38~20.04.1 | 5.15.0-1034.38~20.04.1 |
ubuntu/linux-aws-5.15 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-aws-5.19 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-aws-5.4 | <5.4.0-1100.108~18.04.1 | 5.4.0-1100.108~18.04.1 |
ubuntu/linux-aws-5.4 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-aws-6.5 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-aws-fips | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-aws-hwe | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-azure | <5.4.0-1106.112 | 5.4.0-1106.112 |
ubuntu/linux-azure | <5.15.0-1036.43 | 5.15.0-1036.43 |
ubuntu/linux-azure | <5.19.0-1026.29 | 5.19.0-1026.29 |
ubuntu/linux-azure | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-azure-4.15 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-azure-5.15 | <5.15.0-1036.43~20.04.1 | 5.15.0-1036.43~20.04.1 |
ubuntu/linux-azure-5.15 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-azure-5.19 | <5.19.0-1026.29~22.04.1 | 5.19.0-1026.29~22.04.1 |
ubuntu/linux-azure-5.4 | <5.4.0-1106.112~18.04.1 | 5.4.0-1106.112~18.04.1 |
ubuntu/linux-azure-5.4 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-azure-6.5 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-azure-edge | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-azure-fde | <5.4.0-1106.112 | 5.4.0-1106.112 |
ubuntu/linux-azure-fde | <5.15.0-1036.43.1 | 5.15.0-1036.43.1 |
ubuntu/linux-azure-fde | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-azure-fde-5.15 | <5.15.0-1036.43~20.04.1.1 | 5.15.0-1036.43~20.04.1.1 |
ubuntu/linux-azure-fde-5.15 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-azure-fde-5.19 | <5.19.0-1026.29~22.04.1 | 5.19.0-1026.29~22.04.1 |
ubuntu/linux-azure-fde-5.19 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-azure-fips | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-bluefield | <5.4.0-1062.68 | 5.4.0-1062.68 |
ubuntu/linux-bluefield | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-dell300x | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-fips | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-gcp | <5.4.0-1103.112 | 5.4.0-1103.112 |
ubuntu/linux-gcp | <5.15.0-1032.40 | 5.15.0-1032.40 |
ubuntu/linux-gcp | <5.19.0-1024.26 | 5.19.0-1024.26 |
ubuntu/linux-gcp | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-gcp-4.15 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-gcp-5.15 | <5.15.0-1032.40~20.04.1 | 5.15.0-1032.40~20.04.1 |
ubuntu/linux-gcp-5.15 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-gcp-5.19 | <5.19.0-1024.26~22.04.1 | 5.19.0-1024.26~22.04.1 |
ubuntu/linux-gcp-5.19 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-gcp-5.4 | <5.4.0-1103.112~18.04.1 | 5.4.0-1103.112~18.04.1 |
ubuntu/linux-gcp-5.4 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-gcp-6.5 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-gcp-fips | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-gke | <5.4.0-1097.104 | 5.4.0-1097.104 |
ubuntu/linux-gke | <5.15.0-1031.36 | 5.15.0-1031.36 |
ubuntu/linux-gke | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-gke-4.15 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-gke-5.0 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-gke-5.15 | <5.15.0-1031.36~20.04.1 | 5.15.0-1031.36~20.04.1 |
ubuntu/linux-gke-5.15 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-gke-5.4 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-gkeop | <5.4.0-1067.71 | 5.4.0-1067.71 |
ubuntu/linux-gkeop | <5.15.0-1018.23 | 5.15.0-1018.23 |
ubuntu/linux-gkeop | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-gkeop-5.15 | <5.15.0-1018.23~20.04.1 | 5.15.0-1018.23~20.04.1 |
ubuntu/linux-gkeop-5.15 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-gkeop-5.4 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-hwe | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-hwe-5.15 | <5.15.0-70.77~20.04.1 | 5.15.0-70.77~20.04.1 |
ubuntu/linux-hwe-5.15 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-hwe-5.19 | <5.19.0-42.43~22.04.1 | 5.19.0-42.43~22.04.1 |
ubuntu/linux-hwe-5.4 | <5.4.0-147.164~18.04.1 | 5.4.0-147.164~18.04.1 |
ubuntu/linux-hwe-5.4 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-hwe-6.5 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-hwe-edge | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-ibm | <5.4.0-1047.52 | 5.4.0-1047.52 |
ubuntu/linux-ibm | <5.15.0-1028.31 | 5.15.0-1028.31 |
ubuntu/linux-ibm | <5.19.0-1022.24 | 5.19.0-1022.24 |
ubuntu/linux-ibm | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-ibm-5.15 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-ibm-5.4 | <5.4.0-1047.52~18.04.1 | 5.4.0-1047.52~18.04.1 |
ubuntu/linux-ibm-5.4 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-intel | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-intel-5.13 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-intel-iotg | <5.15.0-1028.33 | 5.15.0-1028.33 |
ubuntu/linux-intel-iotg | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-intel-iotg-5.15 | <5.15.0-1030.35~20.04.1 | 5.15.0-1030.35~20.04.1 |
ubuntu/linux-intel-iotg-5.15 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-iot | <5.4.0-1017.18 | 5.4.0-1017.18 |
ubuntu/linux-iot | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-kvm | <5.4.0-1089.95 | 5.4.0-1089.95 |
ubuntu/linux-kvm | <5.15.0-1031.36 | 5.15.0-1031.36 |
ubuntu/linux-kvm | <5.19.0-1023.24 | 5.19.0-1023.24 |
ubuntu/linux-kvm | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-laptop | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-lowlatency | <5.15.0-70.77 | 5.15.0-70.77 |
ubuntu/linux-lowlatency | <5.19.0-1024.25 | 5.19.0-1024.25 |
ubuntu/linux-lowlatency | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-lowlatency-hwe-5.15 | <5.15.0-70.77~20.04.1 | 5.15.0-70.77~20.04.1 |
ubuntu/linux-lowlatency-hwe-5.15 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-lowlatency-hwe-5.19 | <5.19.0-1024.25~22.04.1 | 5.19.0-1024.25~22.04.1 |
ubuntu/linux-lowlatency-hwe-5.19 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-lowlatency-hwe-6.5 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-lts-xenial | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-nvidia | <5.15.0-1023.23 | 5.15.0-1023.23 |
ubuntu/linux-nvidia | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-nvidia-6.5 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-oem | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-oem-5.10 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-oem-5.14 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-oem-5.17 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-oem-5.6 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-oem-6.0 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-oem-6.1 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-oem-6.5 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-oem-6.8 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-oem-osp1 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-oracle | <5.4.0-1099.108 | 5.4.0-1099.108 |
ubuntu/linux-oracle | <5.15.0-1033.39 | 5.15.0-1033.39 |
ubuntu/linux-oracle | <5.19.0-1023.26 | 5.19.0-1023.26 |
ubuntu/linux-oracle | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-oracle-5.0 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-oracle-5.13 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-oracle-5.15 | <5.15.0-1033.39~20.04.1 | 5.15.0-1033.39~20.04.1 |
ubuntu/linux-oracle-5.15 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-oracle-5.4 | <5.4.0-1099.108~18.04.1 | 5.4.0-1099.108~18.04.1 |
ubuntu/linux-oracle-5.4 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-oracle-6.5 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-raspi | <5.4.0-1083.94 | 5.4.0-1083.94 |
ubuntu/linux-raspi | <5.15.0-1027.29 | 5.15.0-1027.29 |
ubuntu/linux-raspi | <5.19.0-1018.25 | 5.19.0-1018.25 |
ubuntu/linux-raspi | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-raspi-5.4 | <5.4.0-1083.94~18.04.1 | 5.4.0-1083.94~18.04.1 |
ubuntu/linux-raspi-5.4 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-raspi2 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-riscv | <5.19.0-1018.19 | 5.19.0-1018.19 |
ubuntu/linux-riscv | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-riscv-5.15 | <5.15.0-1031.35~20.04.1 | 5.15.0-1031.35~20.04.1 |
ubuntu/linux-riscv-5.15 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-riscv-6.5 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-snapdragon | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-starfive | <6.2.0-1002.2 | 6.2.0-1002.2 |
ubuntu/linux-starfive | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-starfive-5.19 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-starfive-6.5 | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
ubuntu/linux-xilinx-zynqmp | <5.4.0-1024.28 | 5.4.0-1024.28 |
ubuntu/linux-xilinx-zynqmp | <6.1~<5.4.231<5.15.91 | 6.1~ 5.4.231 5.15.91 |
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 |
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(Appears in the following advisories)