high
7.8
CWE
119 190
Advisory Published
CVE Published
Updated

CVE-2023-0179: Buffer Overflow

First published: Fri Jan 13 2023(Updated: )

A buffer overflow vulnerability was found in the Netfilter subsystem in the Linux Kernel. This issue could allow the leakage of both stack and heap addresses, and potentially allow Local Privilege Escalation to the root user via arbitrary code execution.

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel>=5.5.0<5.10.164
Linux Linux kernel>=5.11<5.15.89
Linux Linux kernel>=5.16<6.1.7
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=20.04
Canonical Ubuntu Linux=22.04
Fedoraproject Fedora=36
Fedoraproject Fedora=37
Redhat Enterprise Linux=9.0
Redhat Enterprise Linux Eus=9.0
Redhat Enterprise Linux For Ibm Z Systems=9.0
Redhat Enterprise Linux For Power Little Endian=9.0
Redhat Enterprise Linux For Power Little Endian Eus=9.0
Redhat Enterprise Linux For Real Time=9.0
Redhat Enterprise Linux For Real Time For Nfv=9.0
Redhat Enterprise Linux Server=9.0
Redhat Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions=9.0
Redhat Codeready Linux Builder
Redhat Enterprise Linux=9.0
Redhat Enterprise Linux Eus=9.0
Redhat Enterprise Linux For Ibm Z Systems=9.0
Redhat Enterprise Linux For Ibm Z Systems Eus=9.0
Redhat Enterprise Linux For Power Little Endian=9.0
Redhat Enterprise Linux For Power Little Endian Eus=9.0
Redhat Enterprise Linux Server=9.0
redhat/kernel<0:5.14.0-162.18.1.el9_1
0:5.14.0-162.18.1.el9_1
redhat/kernel-rt<0:5.14.0-162.18.1.rt21.181.el9_1
0:5.14.0-162.18.1.rt21.181.el9_1
redhat/kernel<0:5.14.0-70.49.1.el9_0
0:5.14.0-70.49.1.el9_0
redhat/kernel-rt<0:5.14.0-70.49.1.rt21.120.el9_0
0:5.14.0-70.49.1.rt21.120.el9_0
All of
Redhat Codeready Linux Builder
Any of
Redhat Enterprise Linux=9.0
Redhat Enterprise Linux Eus=9.0
Redhat Enterprise Linux For Ibm Z Systems=9.0
Redhat Enterprise Linux For Ibm Z Systems Eus=9.0
Redhat Enterprise Linux For Power Little Endian=9.0
Redhat Enterprise Linux For Power Little Endian Eus=9.0
Redhat Enterprise Linux Server=9.0
redhat/kernel<5.10.164
5.10.164
redhat/kernel<5.15.89
5.15.89
redhat/kernel<6.1.7
6.1.7
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
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~<5.15.89
6.2~
5.15.89
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~<5.15.89
6.2~
5.15.89
ubuntu/linux-aws-5.0<6.2~<5.15.89
6.2~
5.15.89
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~<5.15.89
6.2~
5.15.89
ubuntu/linux-aws-5.4<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-aws-6.5<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-aws-fips<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-aws-hwe<6.2~<5.15.89
6.2~
5.15.89
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<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-azure-4.15<6.2~<5.15.89
6.2~
5.15.89
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~<5.15.89
6.2~
5.15.89
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<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-azure-6.5<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-azure-edge<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-azure-fde<5.15.0-1034.41.1
5.15.0-1034.41.1
ubuntu/linux-azure-fde<6.2~<5.15.89
6.2~
5.15.89
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~<5.15.89
6.2~
5.15.89
ubuntu/linux-azure-fips<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-bluefield<5.15.0-1014.16
5.15.0-1014.16
ubuntu/linux-bluefield<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-dell300x<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-fips<6.2~<5.15.89
6.2~
5.15.89
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~<5.15.89
6.2~
5.15.89
ubuntu/linux-gcp-4.15<6.2~<5.15.89
6.2~
5.15.89
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~<5.15.89
6.2~
5.15.89
ubuntu/linux-gcp-5.4<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-gcp-6.5<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-gcp-fips<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-gke<5.15.0-1028.33
5.15.0-1028.33
ubuntu/linux-gke<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-gke-4.15<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-gke-5.0<6.2~<5.15.89
6.2~
5.15.89
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~<5.15.89
6.2~
5.15.89
ubuntu/linux-gke-5.4<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-gkeop<5.15.0-1016.21
5.15.0-1016.21
ubuntu/linux-gkeop<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-gkeop-5.15<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-gkeop-5.4<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-hwe<6.2~<5.15.89
6.2~
5.15.89
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~<5.15.89
6.2~
5.15.89
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<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-hwe-6.5<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-hwe-edge<6.2~<5.15.89
6.2~
5.15.89
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~<5.15.89
6.2~
5.15.89
ubuntu/linux-ibm-5.15<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-ibm-5.4<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-intel<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-intel-5.13<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-intel-iotg<5.15.0-1026.31
5.15.0-1026.31
ubuntu/linux-intel-iotg<6.2~<5.15.89
6.2~
5.15.89
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~<5.15.89
6.2~
5.15.89
ubuntu/linux-iot<6.2~<5.15.89
6.2~
5.15.89
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~<5.15.89
6.2~
5.15.89
ubuntu/linux-laptop<6.2~<5.15.89
6.2~
5.15.89
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~<5.15.89
6.2~
5.15.89
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~<5.15.89
6.2~
5.15.89
ubuntu/linux-lowlatency-hwe-5.19<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-lowlatency-hwe-6.5<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-lts-xenial<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-nvidia<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-nvidia-6.5<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-nvidia-6.8<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-nvidia-lowlatency<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-oem<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-oem-5.10<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-oem-5.14<5.14.0-1057.64
5.14.0-1057.64
ubuntu/linux-oem-5.14<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-oem-5.17<5.17.0-1027.28
5.17.0-1027.28
ubuntu/linux-oem-5.17<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-oem-5.6<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-oem-6.0<6.0.0-1011.11
6.0.0-1011.11
ubuntu/linux-oem-6.0<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-oem-6.1<6.1.0-1006.6
6.1.0-1006.6
ubuntu/linux-oem-6.1<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-oem-6.5<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-oem-6.8<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-oem-osp1<6.2~<5.15.89
6.2~
5.15.89
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~<5.15.89
6.2~
5.15.89
ubuntu/linux-oracle-5.0<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-oracle-5.13<6.2~<5.15.89
6.2~
5.15.89
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~<5.15.89
6.2~
5.15.89
ubuntu/linux-oracle-5.4<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-oracle-6.5<6.2~<5.15.89
6.2~
5.15.89
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~<5.15.89
6.2~
5.15.89
ubuntu/linux-raspi-5.4<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-raspi2<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-riscv<5.19.0-1015.16
5.19.0-1015.16
ubuntu/linux-riscv<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-riscv-5.15<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-riscv-6.5<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-snapdragon<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-starfive<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-starfive-6.5<6.2~<5.15.89
6.2~
5.15.89
ubuntu/linux-xilinx-zynqmp<6.2~<5.15.89
6.2~
5.15.89

Remedy

This flaw can be mitigated by disabling unprivileged user namespaces will prevent exploitation: ~~~ sysctl -w kernel.unprivileged_userns_clone = 0 ~~~

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

Remedy

https://git.kernel.org/linus/f6ae9f120dada00abfb47313364c35118469455f

Remedy

https://git.kernel.org/linus/696e1a48b1a1b01edad542a1ef293665864a4dd0

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