7.8
CWE
416 415
Advisory Published
CVE Published
Updated

CVE-2024-1086: Fixes in Linux Kernel

First published: Wed Jan 31 2024(Updated: )

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The nft_verdict_init() function allows positive values as drop error within the hook verdict, and hence the nf_hook_slow() function can cause a double free vulnerability when NF_DROP is issued with a drop error which resembles NF_ACCEPT. We recommend upgrading past commit f342de4e2f33e0e39165d8639387aa6c19dff660.

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

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel>=3.15<6.1.76
Linux Linux kernel>=6.2<6.6.15
Linux Linux kernel>=6.7<6.7.3
Linux Linux kernel=6.8-rc1
redhat/kernel<6.8
6.8
ubuntu/linux<4.15.0-223.235
4.15.0-223.235
ubuntu/linux<5.4.0-174.193
5.4.0-174.193
ubuntu/linux<5.15.0-101.111
5.15.0-101.111
ubuntu/linux<6.5.0-26.26
6.5.0-26.26
ubuntu/linux<6.8~
6.8~
ubuntu/linux<4.4.0-252.286
4.4.0-252.286
ubuntu/linux-aws<4.15.0-1166.179
4.15.0-1166.179
ubuntu/linux-aws<5.4.0-1121.131
5.4.0-1121.131
ubuntu/linux-aws<5.15.0-1056.61
5.15.0-1056.61
ubuntu/linux-aws<6.5.0-1016.16
6.5.0-1016.16
ubuntu/linux-aws<4.4.0-1129.135
4.4.0-1129.135
ubuntu/linux-aws<6.8~
6.8~
ubuntu/linux-aws<4.4.0-1167.182
4.4.0-1167.182
ubuntu/linux-aws-5.15<5.15.0-1056.61~20.04.1
5.15.0-1056.61~20.04.1
ubuntu/linux-aws-5.15<6.8~
6.8~
ubuntu/linux-aws-5.4<5.4.0-1121.131~18.04.1
5.4.0-1121.131~18.04.1
ubuntu/linux-aws-5.4<6.8~
6.8~
ubuntu/linux-aws-6.5<6.5.0-1016.16~22.04.1
6.5.0-1016.16~22.04.1
ubuntu/linux-aws-6.5<6.8~
6.8~
ubuntu/linux-aws-hwe<6.8~
6.8~
ubuntu/linux-aws-hwe<4.15.0-1166.179~16.04.1
4.15.0-1166.179~16.04.1
ubuntu/linux-azure<5.4.0-1126.133
5.4.0-1126.133
ubuntu/linux-azure<5.15.0-1059.67
5.15.0-1059.67
ubuntu/linux-azure<6.5.0-1017.17
6.5.0-1017.17
ubuntu/linux-azure<4.15.0-1175.190~14.04.1
4.15.0-1175.190~14.04.1
ubuntu/linux-azure<6.8~
6.8~
ubuntu/linux-azure<4.15.0-1175.190~16.04.1
4.15.0-1175.190~16.04.1
ubuntu/linux-azure-4.15<4.15.0-1175.190
4.15.0-1175.190
ubuntu/linux-azure-4.15<6.8~
6.8~
ubuntu/linux-azure-5.15<5.15.0-1059.67~20.04.1
5.15.0-1059.67~20.04.1
ubuntu/linux-azure-5.15<6.8~
6.8~
ubuntu/linux-azure-5.4<5.4.0-1126.133~18.04.1
5.4.0-1126.133~18.04.1
ubuntu/linux-azure-5.4<6.8~
6.8~
ubuntu/linux-azure-6.5<6.5.0-1017.17~22.04.1
6.5.0-1017.17~22.04.1
ubuntu/linux-azure-6.5<6.8~
6.8~
ubuntu/linux-azure-fde<5.15.0-1059.67.1
5.15.0-1059.67.1
ubuntu/linux-azure-fde<6.8~
6.8~
ubuntu/linux-azure-fde-5.15<5.15.0-1059.67~20.04.1.1
5.15.0-1059.67~20.04.1.1
ubuntu/linux-azure-fde-5.15<6.8~
6.8~
ubuntu/linux-bluefield<5.4.0-1081.88
5.4.0-1081.88
ubuntu/linux-bluefield<6.8~
6.8~
ubuntu/linux-fips<6.8~
6.8~
ubuntu/linux-gcp<5.4.0-1125.134
5.4.0-1125.134
ubuntu/linux-gcp<5.15.0-1054.62
5.15.0-1054.62
ubuntu/linux-gcp<6.5.0-1016.16
6.5.0-1016.16
ubuntu/linux-gcp<6.8~
6.8~
ubuntu/linux-gcp<4.15.0-1160.177~16.04.1
4.15.0-1160.177~16.04.1
ubuntu/linux-gcp-4.15<4.15.0-1160.177
4.15.0-1160.177
ubuntu/linux-gcp-4.15<6.8~
6.8~
ubuntu/linux-gcp-5.15<5.15.0-1054.62~20.04.1
5.15.0-1054.62~20.04.1
ubuntu/linux-gcp-5.15<6.8~
6.8~
ubuntu/linux-gcp-5.4<5.4.0-1125.134~18.04.1
5.4.0-1125.134~18.04.1
ubuntu/linux-gcp-5.4<6.8~
6.8~
ubuntu/linux-gcp-6.5<6.5.0-1016.16~22.04.1
6.5.0-1016.16~22.04.1
ubuntu/linux-gcp-6.5<6.8~
6.8~
ubuntu/linux-gke<5.15.0-1053.58
5.15.0-1053.58
ubuntu/linux-gke<6.8~
6.8~
ubuntu/linux-gkeop<5.4.0-1088.92
5.4.0-1088.92
ubuntu/linux-gkeop<5.15.0-1039.45
5.15.0-1039.45
ubuntu/linux-gkeop<6.8~
6.8~
ubuntu/linux-gkeop-5.15<5.15.0-1039.45~20.04.1
5.15.0-1039.45~20.04.1
ubuntu/linux-gkeop-5.15<6.8~
6.8~
ubuntu/linux-hwe<6.8~
6.8~
ubuntu/linux-hwe<4.15.0-223.235~16.04.1
4.15.0-223.235~16.04.1
ubuntu/linux-hwe-5.15<5.15.0-101.111~20.04.1
5.15.0-101.111~20.04.1
ubuntu/linux-hwe-5.15<6.8~
6.8~
ubuntu/linux-hwe-5.4<5.4.0-174.193~18.04.1
5.4.0-174.193~18.04.1
ubuntu/linux-hwe-5.4<6.8~
6.8~
ubuntu/linux-hwe-6.5<6.5.0-26.26~22.04.1
6.5.0-26.26~22.04.1
ubuntu/linux-hwe-6.5<6.8~
6.8~
ubuntu/linux-ibm<5.4.0-1068.73
5.4.0-1068.73
ubuntu/linux-ibm<5.15.0-1049.52
5.15.0-1049.52
ubuntu/linux-ibm<6.8~
6.8~
ubuntu/linux-ibm-5.15<5.15.0-1049.52~20.04.1
5.15.0-1049.52~20.04.1
ubuntu/linux-ibm-5.15<6.8~
6.8~
ubuntu/linux-ibm-5.4<5.4.0-1068.73~18.04.1
5.4.0-1068.73~18.04.1
ubuntu/linux-ibm-5.4<6.8~
6.8~
ubuntu/linux-intel-iotg<5.15.0-1051.57
5.15.0-1051.57
ubuntu/linux-intel-iotg<6.8~
6.8~
ubuntu/linux-intel-iotg-5.15<5.15.0-1051.57~20.04.1
5.15.0-1051.57~20.04.1
ubuntu/linux-intel-iotg-5.15<6.8~
6.8~
ubuntu/linux-iot<5.4.0-1033.34
5.4.0-1033.34
ubuntu/linux-iot<6.8~
6.8~
ubuntu/linux-kvm<4.15.0-1150.155
4.15.0-1150.155
ubuntu/linux-kvm<5.4.0-1109.116
5.4.0-1109.116
ubuntu/linux-kvm<5.15.0-1053.58
5.15.0-1053.58
ubuntu/linux-kvm<6.8~
6.8~
ubuntu/linux-kvm<4.4.0-1130.140
4.4.0-1130.140
ubuntu/linux-laptop<6.5.0-1012.15
6.5.0-1012.15
ubuntu/linux-laptop<6.8~
6.8~
ubuntu/linux-lowlatency<5.15.0-101.111
5.15.0-101.111
ubuntu/linux-lowlatency<6.5.0-26.26.1
6.5.0-26.26.1
ubuntu/linux-lowlatency<6.8~
6.8~
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-101.111~20.04.1
5.15.0-101.111~20.04.1
ubuntu/linux-lowlatency-hwe-5.15<6.8~
6.8~
ubuntu/linux-lowlatency-hwe-6.5<6.5.0-26.26.1~22.04.1
6.5.0-26.26.1~22.04.1
ubuntu/linux-lowlatency-hwe-6.5<6.8~
6.8~
ubuntu/linux-lts-xenial<4.4.0-252.286~14.04.1
4.4.0-252.286~14.04.1
ubuntu/linux-lts-xenial<6.8~
6.8~
ubuntu/linux-nvidia<5.15.0-1047.47
5.15.0-1047.47
ubuntu/linux-nvidia<6.8~
6.8~
ubuntu/linux-oem-6.1<6.1.0-1035.35
6.1.0-1035.35
ubuntu/linux-oem-6.1<6.8~
6.8~
ubuntu/linux-oem-6.5<6.5.0-1018.19
6.5.0-1018.19
ubuntu/linux-oem-6.5<6.8~
6.8~
ubuntu/linux-oracle<4.15.0-1129.140
4.15.0-1129.140
ubuntu/linux-oracle<5.4.0-1120.129
5.4.0-1120.129
ubuntu/linux-oracle<5.15.0-1054.60
5.15.0-1054.60
ubuntu/linux-oracle<6.5.0-1019.19
6.5.0-1019.19
ubuntu/linux-oracle<6.8~
6.8~
ubuntu/linux-oracle<4.15.0-1129.140~16.04.1
4.15.0-1129.140~16.04.1
ubuntu/linux-oracle-5.15<5.15.0-1054.60~20.04.1
5.15.0-1054.60~20.04.1
ubuntu/linux-oracle-5.15<6.8~
6.8~
ubuntu/linux-oracle-5.4<5.4.0-1120.129~18.04.1
5.4.0-1120.129~18.04.1
ubuntu/linux-oracle-5.4<6.8~
6.8~
ubuntu/linux-oracle-6.5<6.5.0-1019.19~22.04.1
6.5.0-1019.19~22.04.1
ubuntu/linux-raspi<5.4.0-1105.117
5.4.0-1105.117
ubuntu/linux-raspi<5.15.0-1049.52
5.15.0-1049.52
ubuntu/linux-raspi<6.5.0-1013.16
6.5.0-1013.16
ubuntu/linux-raspi<6.8~
6.8~
ubuntu/linux-raspi-5.4<5.4.0-1105.117~18.04.1
5.4.0-1105.117~18.04.1
ubuntu/linux-raspi-5.4<6.8~
6.8~
ubuntu/linux-riscv<6.5.0-26.26.1
6.5.0-26.26.1
ubuntu/linux-riscv<6.8~
6.8~
ubuntu/linux-riscv-5.15<5.15.0-1052.56~20.04.1
5.15.0-1052.56~20.04.1
ubuntu/linux-riscv-5.15<6.8~
6.8~
ubuntu/linux-riscv-6.5<6.5.0-26.26.1~22.04.1
6.5.0-26.26.1~22.04.1
ubuntu/linux-riscv-6.5<6.8~
6.8~
ubuntu/linux-starfive<6.5.0-1010.11
6.5.0-1010.11
ubuntu/linux-starfive<6.8~
6.8~
ubuntu/linux-starfive-6.5<6.5.0-1010.11~22.04.1
6.5.0-1010.11~22.04.1
ubuntu/linux-starfive-6.5<6.8~
6.8~
ubuntu/linux-xilinx-zynqmp<5.4.0-1040.44
5.4.0-1040.44
ubuntu/linux-xilinx-zynqmp<6.8~
6.8~
debian/linux<=4.19.249-2<=4.19.304-1<=5.10.205-2
5.10.209-2
6.1.76-1
6.1.85-1
6.6.15-2
6.7.9-2

Remedy

If not needed, disable the ability for unprivileged users to create namespaces. To do this temporarily, do: sudo sysctl -w kernel.unprivileged_userns_clone=0 To disable across reboots, do: echo kernel.unprivileged_userns_clone=0 | \ sudo tee /etc/sysctl.d/99-disable-unpriv-userns.conf

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Reference Links

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