7.8
CWE
416
Advisory Published
Updated

CVE-2023-0461: Use After Free

First published: Wed Feb 22 2023(Updated: )

A use-after-free flaw was found in the Linux kernel’s TLS protocol functionality in how a user installs a tls context (struct tls_context) on a connected TCP socket. This flaw allows a local user to crash or potentially escalate their privileges on the system.

Credit: cve-coordination@google.com cve-coordination@google.com

Affected SoftwareAffected VersionHow 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<0:4.18.0-147.83.1.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-rt<0:4.18.0-305.86.2.rt7.160.el8_4
0:4.18.0-305.86.2.rt7.160.el8_4
redhat/kernel<0:4.18.0-305.86.2.el8_4
0:4.18.0-305.86.2.el8_4
redhat/kernel<0:4.18.0-372.52.1.el8_6
0:4.18.0-372.52.1.el8_6
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/kernel<0:5.14.0-70.58.1.el9_0
0:5.14.0-70.58.1.el9_0
redhat/kernel-rt<0:5.14.0-70.58.1.rt21.129.el9_0
0:5.14.0-70.58.1.rt21.129.el9_0
Linux Linux kernel>=4.13.0<4.14.303
Linux Linux kernel>=4.19<4.19.270
Linux Linux kernel>=5.4<5.4.229
Linux Linux kernel>=5.10<5.10.163
Linux Linux kernel>=5.15<5.15.88
Linux Linux kernel>=6.0<6.0.19
Linux Linux kernel>=6.1<6.1.5
Linux Linux kernel=6.2-rc1
Linux Linux kernel=6.2-rc2
redhat/kernel<6.2
6.2
ubuntu/linux<4.15.0-206.217
4.15.0-206.217
ubuntu/linux<5.4.0-144.161
5.4.0-144.161
ubuntu/linux<5.15.0-67.74
5.15.0-67.74
ubuntu/linux<5.19.0-35.36
5.19.0-35.36
ubuntu/linux<6.2~
6.2~
ubuntu/linux-aws<4.15.0-1151.164
4.15.0-1151.164
ubuntu/linux-aws<5.4.0-1097.105
5.4.0-1097.105
ubuntu/linux-aws<5.15.0-1031.35
5.15.0-1031.35
ubuntu/linux-aws<5.19.0-1020.21
5.19.0-1020.21
ubuntu/linux-aws<6.2~
6.2~
ubuntu/linux-aws-5.0<6.2~
6.2~
ubuntu/linux-aws-5.15<5.15.0-1031.35~20.04.1
5.15.0-1031.35~20.04.1
ubuntu/linux-aws-5.15<6.2~
6.2~
ubuntu/linux-aws-5.4<5.4.0-1097.105~18.04.1
5.4.0-1097.105~18.04.1
ubuntu/linux-aws-5.4<6.2~
6.2~
ubuntu/linux-aws-6.5<6.2~
6.2~
ubuntu/linux-aws-fips<6.2~
6.2~
ubuntu/linux-aws-hwe<6.2~
6.2~
ubuntu/linux-aws-hwe<4.15.0-1151.164~16.04.1
4.15.0-1151.164~16.04.1
ubuntu/linux-azure<5.4.0-1104.110
5.4.0-1104.110
ubuntu/linux-azure<5.15.0-1034.41
5.15.0-1034.41
ubuntu/linux-azure<5.19.0-1021.22
5.19.0-1021.22
ubuntu/linux-azure<4.15.0-1162.177~14.04.1
4.15.0-1162.177~14.04.1
ubuntu/linux-azure<6.2~
6.2~
ubuntu/linux-azure<4.15.0-1162.177~16.04.1
4.15.0-1162.177~16.04.1
ubuntu/linux-azure-4.15<4.15.0-1162.177
4.15.0-1162.177
ubuntu/linux-azure-4.15<6.2~
6.2~
ubuntu/linux-azure-5.15<5.15.0-1034.41~20.04.1
5.15.0-1034.41~20.04.1
ubuntu/linux-azure-5.15<6.2~
6.2~
ubuntu/linux-azure-5.19<5.19.0-1021.22~22.04.1
5.19.0-1021.22~22.04.1
ubuntu/linux-azure-5.4<5.4.0-1104.110~18.04.1
5.4.0-1104.110~18.04.1
ubuntu/linux-azure-5.4<6.2~
6.2~
ubuntu/linux-azure-6.5<6.2~
6.2~
ubuntu/linux-azure-edge<6.2~
6.2~
ubuntu/linux-azure-fde<5.4.0-1104.110
5.4.0-1104.110
ubuntu/linux-azure-fde<5.15.0-1034.41.1
5.15.0-1034.41.1
ubuntu/linux-azure-fde<6.2~
6.2~
ubuntu/linux-azure-fde-5.15<5.15.0-1034.41~20.04.1.2
5.15.0-1034.41~20.04.1.2
ubuntu/linux-azure-fde-5.15<6.2~
6.2~
ubuntu/linux-azure-fips<6.2~
6.2~
ubuntu/linux-bluefield<5.4.0-1059.65
5.4.0-1059.65
ubuntu/linux-bluefield<5.15.0-1014.16
5.15.0-1014.16
ubuntu/linux-bluefield<6.2~
6.2~
ubuntu/linux-dell300x<4.15.0-1061.66
4.15.0-1061.66
ubuntu/linux-dell300x<6.2~
6.2~
ubuntu/linux-fips<6.2~
6.2~
ubuntu/linux-gcp<5.4.0-1101.110
5.4.0-1101.110
ubuntu/linux-gcp<5.15.0-1030.37
5.15.0-1030.37
ubuntu/linux-gcp<5.19.0-1018.20
5.19.0-1018.20
ubuntu/linux-gcp<6.2~
6.2~
ubuntu/linux-gcp<4.15.0-1146.162~16.04.1
4.15.0-1146.162~16.04.1
ubuntu/linux-gcp-4.15<4.15.0-1146.162
4.15.0-1146.162
ubuntu/linux-gcp-4.15<6.2~
6.2~
ubuntu/linux-gcp-5.15<5.15.0-1030.37~20.04.1
5.15.0-1030.37~20.04.1
ubuntu/linux-gcp-5.15<6.2~
6.2~
ubuntu/linux-gcp-5.4<5.4.0-1101.110~18.04.1
5.4.0-1101.110~18.04.1
ubuntu/linux-gcp-5.4<6.2~
6.2~
ubuntu/linux-gcp-6.5<6.2~
6.2~
ubuntu/linux-gcp-fips<6.2~
6.2~
ubuntu/linux-gke<5.4.0-1095.102
5.4.0-1095.102
ubuntu/linux-gke<5.15.0-1028.33
5.15.0-1028.33
ubuntu/linux-gke<6.2~
6.2~
ubuntu/linux-gke-4.15<6.2~
6.2~
ubuntu/linux-gke-5.0<6.2~
6.2~
ubuntu/linux-gke-5.15<5.15.0-1028.33~20.04.1
5.15.0-1028.33~20.04.1
ubuntu/linux-gke-5.15<6.2~
6.2~
ubuntu/linux-gke-5.4<6.2~
6.2~
ubuntu/linux-gkeop<5.4.0-1065.69
5.4.0-1065.69
ubuntu/linux-gkeop<5.15.0-1016.21
5.15.0-1016.21
ubuntu/linux-gkeop<6.2~
6.2~
ubuntu/linux-gkeop-5.15<6.2~
6.2~
ubuntu/linux-gkeop-5.4<6.2~
6.2~
ubuntu/linux-hwe<6.2~
6.2~
ubuntu/linux-hwe<4.15.0-206.217~16.04.1
4.15.0-206.217~16.04.1
ubuntu/linux-hwe-5.15<5.15.0-67.74~20.04.1
5.15.0-67.74~20.04.1
ubuntu/linux-hwe-5.15<6.2~
6.2~
ubuntu/linux-hwe-5.19<5.19.0-35.36~22.04.1
5.19.0-35.36~22.04.1
ubuntu/linux-hwe-5.4<5.4.0-144.161~18.04.1
5.4.0-144.161~18.04.1
ubuntu/linux-hwe-5.4<6.2~
6.2~
ubuntu/linux-hwe-6.5<6.2~
6.2~
ubuntu/linux-hwe-edge<6.2~
6.2~
ubuntu/linux-ibm<5.4.0-1045.50
5.4.0-1045.50
ubuntu/linux-ibm<5.15.0-1026.29
5.15.0-1026.29
ubuntu/linux-ibm<5.19.0-1018.20
5.19.0-1018.20
ubuntu/linux-ibm<6.2~
6.2~
ubuntu/linux-ibm-5.15<6.2~
6.2~
ubuntu/linux-ibm-5.4<5.4.0-1045.50~18.04.1
5.4.0-1045.50~18.04.1
ubuntu/linux-ibm-5.4<6.2~
6.2~
ubuntu/linux-intel<6.2~
6.2~
ubuntu/linux-intel-5.13<6.2~
6.2~
ubuntu/linux-intel-iotg<5.15.0-1026.31
5.15.0-1026.31
ubuntu/linux-intel-iotg<6.2~
6.2~
ubuntu/linux-intel-iotg-5.15<5.15.0-1026.31~20.04.1
5.15.0-1026.31~20.04.1
ubuntu/linux-intel-iotg-5.15<6.2~
6.2~
ubuntu/linux-iot<6.2~
6.2~
ubuntu/linux-kvm<4.15.0-1136.141
4.15.0-1136.141
ubuntu/linux-kvm<5.4.0-1087.93
5.4.0-1087.93
ubuntu/linux-kvm<5.15.0-1029.34
5.15.0-1029.34
ubuntu/linux-kvm<5.19.0-1019.20
5.19.0-1019.20
ubuntu/linux-kvm<6.2~
6.2~
ubuntu/linux-laptop<6.2~
6.2~
ubuntu/linux-lowlatency<5.15.0-67.74
5.15.0-67.74
ubuntu/linux-lowlatency<5.19.0-1018.19
5.19.0-1018.19
ubuntu/linux-lowlatency<6.2~
6.2~
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-67.74~20.04.1
5.15.0-67.74~20.04.1
ubuntu/linux-lowlatency-hwe-5.15<6.2~
6.2~
ubuntu/linux-lowlatency-hwe-5.19<5.19.0-1018.19~22.04.1
5.19.0-1018.19~22.04.1
ubuntu/linux-lowlatency-hwe-5.19<6.2~
6.2~
ubuntu/linux-lowlatency-hwe-6.5<6.2~
6.2~
ubuntu/linux-lts-xenial<6.2~
6.2~
ubuntu/linux-nvidia<6.2~
6.2~
ubuntu/linux-nvidia-6.5<6.2~
6.2~
ubuntu/linux-oem<6.2~
6.2~
ubuntu/linux-oem-5.10<6.2~
6.2~
ubuntu/linux-oem-5.14<5.14.0-1058.66
5.14.0-1058.66
ubuntu/linux-oem-5.14<6.2~
6.2~
ubuntu/linux-oem-5.17<5.17.0-1028.29
5.17.0-1028.29
ubuntu/linux-oem-5.17<6.2~
6.2~
ubuntu/linux-oem-5.6<6.2~
6.2~
ubuntu/linux-oem-6.0<6.0.0-1012.12
6.0.0-1012.12
ubuntu/linux-oem-6.0<6.2~
6.2~
ubuntu/linux-oem-6.1<6.1.0-1007.7
6.1.0-1007.7
ubuntu/linux-oem-6.1<6.2~
6.2~
ubuntu/linux-oem-6.5<6.2~
6.2~
ubuntu/linux-oem-6.8<6.2~
6.2~
ubuntu/linux-oem-osp1<6.2~
6.2~
ubuntu/linux-oracle<4.15.0-1115.126
4.15.0-1115.126
ubuntu/linux-oracle<5.4.0-1094.103
5.4.0-1094.103
ubuntu/linux-oracle<5.15.0-1030.36
5.15.0-1030.36
ubuntu/linux-oracle<5.19.0-1018.21
5.19.0-1018.21
ubuntu/linux-oracle<6.2~
6.2~
ubuntu/linux-oracle<4.15.0-1115.126~16.04.1
4.15.0-1115.126~16.04.1
ubuntu/linux-oracle-5.0<6.2~
6.2~
ubuntu/linux-oracle-5.13<6.2~
6.2~
ubuntu/linux-oracle-5.15<5.15.0-1030.36~20.04.1
5.15.0-1030.36~20.04.1
ubuntu/linux-oracle-5.15<6.2~
6.2~
ubuntu/linux-oracle-5.4<5.4.0-1094.103~18.04.1
5.4.0-1094.103~18.04.1
ubuntu/linux-oracle-5.4<6.2~
6.2~
ubuntu/linux-oracle-6.5<6.2~
6.2~
ubuntu/linux-raspi<5.4.0-1081.92
5.4.0-1081.92
ubuntu/linux-raspi<5.15.0-1025.27
5.15.0-1025.27
ubuntu/linux-raspi<5.19.0-1014.21
5.19.0-1014.21
ubuntu/linux-raspi<6.2~
6.2~
ubuntu/linux-raspi-5.4<5.4.0-1081.92~18.04.1
5.4.0-1081.92~18.04.1
ubuntu/linux-raspi-5.4<6.2~
6.2~
ubuntu/linux-raspi2<4.15.0-1128.136
4.15.0-1128.136
ubuntu/linux-raspi2<6.2~
6.2~
ubuntu/linux-riscv<5.19.0-1015.16
5.19.0-1015.16
ubuntu/linux-riscv<6.2~
6.2~
ubuntu/linux-riscv-5.15<6.2~
6.2~
ubuntu/linux-riscv-6.5<6.2~
6.2~
ubuntu/linux-snapdragon<4.15.0-1146.156
4.15.0-1146.156
ubuntu/linux-snapdragon<6.2~
6.2~
ubuntu/linux-starfive<6.2~
6.2~
ubuntu/linux-starfive-6.5<6.2~
6.2~
ubuntu/linux-xilinx-zynqmp<6.2~
6.2~
debian/linux
5.10.218-1
6.1.94-1
6.1.90-1
6.9.7-1
6.9.8-1

Remedy

To mitigate this issue, prevent module tls from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.

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Reference Links

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