7.8
CWE
125
EPSS
0.045%
Advisory Published
CVE Published
Updated

CVE-2023-6040: An out-of-bounds access vulnerability involving netfilter was reported and fixed as: f1082dd31fe4 (netfilter: nf_tables: Reject tables of unsupported family)

First published: Fri Jan 12 2024(Updated: )

An out-of-bounds access vulnerability involving netfilter was reported and fixed as: f1082dd31fe4 (netfilter: nf_tables: Reject tables of unsupported family); While creating a new netfilter table, lack of a safeguard against invalid nf_tables family (pf) values within `nf_tables_newtable` function enables an attacker to achieve out-of-bounds access.

Credit: security@ubuntu.com security@ubuntu.com

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel<=5.17
ubuntu/linux<5.4.0-170.188
5.4.0-170.188
ubuntu/linux<5.15.0-92.102
5.15.0-92.102
ubuntu/linux<5.18~
5.18~
ubuntu/linux-aws<5.4.0-1117.127
5.4.0-1117.127
ubuntu/linux-aws<5.15.0-1052.57
5.15.0-1052.57
ubuntu/linux-aws<5.18~
5.18~
ubuntu/linux-aws-5.15<5.15.0-1052.57~20.04.1
5.15.0-1052.57~20.04.1
ubuntu/linux-aws-5.15<5.18~
5.18~
ubuntu/linux-aws-5.4<5.4.0-1117.127~18.04.1
5.4.0-1117.127~18.04.1
ubuntu/linux-aws-5.4<5.18~
5.18~
ubuntu/linux-aws-6.2<5.18~
5.18~
ubuntu/linux-aws-hwe<5.18~
5.18~
ubuntu/linux-azure<5.4.0-1122.129
5.4.0-1122.129
ubuntu/linux-azure<5.15.0-1054.62
5.15.0-1054.62
ubuntu/linux-azure<5.18~
5.18~
ubuntu/linux-azure-4.15<5.18~
5.18~
ubuntu/linux-azure-5.15<5.15.0-1054.62~20.04.1
5.15.0-1054.62~20.04.1
ubuntu/linux-azure-5.15<5.18~
5.18~
ubuntu/linux-azure-5.4<5.4.0-1122.129~18.04.1
5.4.0-1122.129~18.04.1
ubuntu/linux-azure-5.4<5.18~
5.18~
ubuntu/linux-azure-6.2<5.18~
5.18~
ubuntu/linux-azure-fde<5.15.0-1054.62
5.15.0-1054.62
ubuntu/linux-azure-fde<5.18~
5.18~
ubuntu/linux-azure-fde-5.15<5.15.0-1054.62~20.04.1
5.15.0-1054.62~20.04.1
ubuntu/linux-azure-fde-5.15<5.18~
5.18~
ubuntu/linux-azure-fde-6.2<5.18~
5.18~
ubuntu/linux-bluefield<5.4.0-1077.83
5.4.0-1077.83
ubuntu/linux-bluefield<5.18~
5.18~
ubuntu/linux-fips<5.18~
5.18~
ubuntu/linux-gcp<5.4.0-1121.130
5.4.0-1121.130
ubuntu/linux-gcp<5.15.0-1049.57
5.15.0-1049.57
ubuntu/linux-gcp<5.18~
5.18~
ubuntu/linux-gcp-4.15<5.18~
5.18~
ubuntu/linux-gcp-5.15<5.15.0-1049.57~20.04.1
5.15.0-1049.57~20.04.1
ubuntu/linux-gcp-5.15<5.18~
5.18~
ubuntu/linux-gcp-5.19<5.18~
5.18~
ubuntu/linux-gcp-5.4<5.4.0-1121.130~18.04.1
5.4.0-1121.130~18.04.1
ubuntu/linux-gcp-5.4<5.18~
5.18~
ubuntu/linux-gke<5.15.0-1049.54
5.15.0-1049.54
ubuntu/linux-gke<5.18~
5.18~
ubuntu/linux-gkeop<5.4.0-1084.88
5.4.0-1084.88
ubuntu/linux-gkeop<5.15.0-1035.41
5.15.0-1035.41
ubuntu/linux-gkeop<5.18~
5.18~
ubuntu/linux-gkeop-5.15<5.15.0-1035.41~20.04.1
5.15.0-1035.41~20.04.1
ubuntu/linux-gkeop-5.15<5.18~
5.18~
ubuntu/linux-hwe<5.18~
5.18~
ubuntu/linux-hwe-5.15<5.15.0-92.102~20.04.1
5.15.0-92.102~20.04.1
ubuntu/linux-hwe-5.15<5.18~
5.18~
ubuntu/linux-hwe-5.4<5.4.0-170.188~18.04.1
5.4.0-170.188~18.04.1
ubuntu/linux-hwe-5.4<5.18~
5.18~
ubuntu/linux-hwe-6.5<5.18~
5.18~
ubuntu/linux-ibm<5.4.0-1064.69
5.4.0-1064.69
ubuntu/linux-ibm<5.15.0-1045.48
5.15.0-1045.48
ubuntu/linux-ibm<5.18~
5.18~
ubuntu/linux-ibm-5.15<5.15.0-1045.48~20.04.1
5.15.0-1045.48~20.04.1
ubuntu/linux-ibm-5.15<5.18~
5.18~
ubuntu/linux-ibm-5.4<5.4.0-1064.69~18.04.1
5.4.0-1064.69~18.04.1
ubuntu/linux-ibm-5.4<5.18~
5.18~
ubuntu/linux-intel-iotg<5.15.0-1047.53
5.15.0-1047.53
ubuntu/linux-intel-iotg<5.18~
5.18~
ubuntu/linux-intel-iotg-5.15<5.15.0-1048.54~20.04.1
5.15.0-1048.54~20.04.1
ubuntu/linux-intel-iotg-5.15<5.18~
5.18~
ubuntu/linux-iot<5.4.0-1029.30
5.4.0-1029.30
ubuntu/linux-iot<5.18~
5.18~
ubuntu/linux-kvm<5.4.0-1105.112
5.4.0-1105.112
ubuntu/linux-kvm<5.15.0-1049.54
5.15.0-1049.54
ubuntu/linux-kvm<5.18~
5.18~
ubuntu/linux-laptop<5.18~
5.18~
ubuntu/linux-lowlatency<5.18~
5.18~
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-92.102~20.04.1
5.15.0-92.102~20.04.1
ubuntu/linux-lowlatency-hwe-5.15<5.18~
5.18~
ubuntu/linux-lowlatency-hwe-6.5<5.18~
5.18~
ubuntu/linux-lts-xenial<5.18~
5.18~
ubuntu/linux-nvidia<5.15.0-1043.43
5.15.0-1043.43
ubuntu/linux-nvidia<5.18~
5.18~
ubuntu/linux-nvidia-6.2<5.18~
5.18~
ubuntu/linux-oem-6.1<5.18~
5.18~
ubuntu/linux-oem-6.5<5.18~
5.18~
ubuntu/linux-oracle<5.4.0-1116.125
5.4.0-1116.125
ubuntu/linux-oracle<5.15.0-1050.56
5.15.0-1050.56
ubuntu/linux-oracle<5.18~
5.18~
ubuntu/linux-oracle-5.15<5.15.0-1050.56~20.04.1
5.15.0-1050.56~20.04.1
ubuntu/linux-oracle-5.15<5.18~
5.18~
ubuntu/linux-oracle-5.4<5.4.0-1116.125~18.04.1
5.4.0-1116.125~18.04.1
ubuntu/linux-oracle-5.4<5.18~
5.18~
ubuntu/linux-raspi<5.4.0-1101.113
5.4.0-1101.113
ubuntu/linux-raspi<5.15.0-1045.48
5.15.0-1045.48
ubuntu/linux-raspi<5.18~
5.18~
ubuntu/linux-raspi-5.4<5.4.0-1101.113~18.04.1
5.4.0-1101.113~18.04.1
ubuntu/linux-raspi-5.4<5.18~
5.18~
ubuntu/linux-riscv<5.18~
5.18~
ubuntu/linux-riscv-5.15<5.15.0-1048.52~20.04.1
5.15.0-1048.52~20.04.1
ubuntu/linux-riscv-5.15<5.18~
5.18~
ubuntu/linux-starfive<5.18~
5.18~
ubuntu/linux-xilinx-zynqmp<5.4.0-1036.40
5.4.0-1036.40
ubuntu/linux-xilinx-zynqmp<5.15.0-1027.31
5.15.0-1027.31
ubuntu/linux-xilinx-zynqmp<5.18~
5.18~
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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Parent vulnerabilities

(Appears in the following advisories)

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