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CVE-2023-1076

Updated on 27 Mar 2023

Severity

5.5 Medium severity

Details

CVSS score
5.5
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CWE ID
Links
NISTCIRCLRHELUbuntu

Overview

About vulnerability

A flaw was found in the Linux Kernel. The tun/tap sockets have their socket UID hardcoded to 0 due to a type confusion in their initialization function. While it will be often correct, as tuntap devices require CAP_NET_ADMIN, it may not always be the case, e.g., a non-root user only having that capability. This would make tun/tap sockets being incorrectly treated in filtering/routing decisions, possibly bypassing network filters.

Details

Affected product:
AlmaLinux 9.2 ESU , Amazon Linux 2 ELS , CentOS 6 ELS , CentOS 7 ELS , CentOS 8.4 ELS , CentOS 8.5 ELS , CentOS Stream 8 ELS , CloudLinux 6 ELS , CloudLinux 7 ELS , Debian 10 ELS , Oracle Linux 6 ELS , Oracle Linux 7 ELS , RHEL 7 ELS , TuxCare 9.6 ESU , Ubuntu 16.04 ELS , Ubuntu 18.04 ELS , Ubuntu 20.04 ELS
Affected packages:
kernel @ 5.14.0 (+18 more)

Fixes

KernelCare state

Live-patch status from KernelCare for each operating system.

Operating system Status Covered kernels
AlmaLinux 9 Released
14 kernels
  • 5.14.0-70.22.1.el9_0
  • 5.14.0-70.26.1.el9_0
  • 5.14.0-70.30.1.el9_0
  • 5.14.0-162.12.1.el9_1
  • 5.14.0-162.18.1.el9_1
  • 5.14.0-162.22.2.el9_1
  • 5.14.0-162.23.1.el9_1
  • 5.14.0-162.6.1.el9_1
  • 5.14.0-284.11.1.el9_2
  • 5.14.0-284.18.1.el9_2
  • 5.14.0-284.25.1.el9_2
  • 5.14.0-70.13.1.el9_0
  • 5.14.0-70.17.1.el9_0
  • 5.14.0-284.30.1.el9_2
Debian 11 Planned —
Oracle Linux 9 Released
16 kernels
  • 5.14.0-284.18.1.el9_2
  • 5.14.0-284.25.1.el9_2
  • 5.14.0-70.13.1.0.3.el9_0
  • 5.14.0-70.17.1.0.1.el9_0
  • 5.14.0-70.22.1.0.1.el9_0
  • 5.14.0-70.26.1.0.1.el9_0
  • 5.14.0-162.12.1.el9_1
  • 5.14.0-162.18.1.el9_1
  • 5.14.0-162.22.2.el9_1
  • 5.14.0-162.23.1.el9_1
  • 5.14.0-162.6.1.el9_1
  • 5.14.0-284.11.1.el9_2
  • 5.14.0-284.25.1.0.1.el9_2
  • 5.14.0-284.30.0.1.el9_2
  • 5.14.0-284.30.1.el9_2
  • 5.14.0-70.30.1.0.1.el9_0
Proxmox VE 7 5.15 Released
28 kernels
  • 5.15.12-1-pve-5.15.12-2
  • 5.15.12-1-pve-5.15.12-3
  • 5.15.17-1-pve-5.15.17-1
  • 5.15.19-1-pve-5.15.19-1
  • 5.15.19-2-pve-5.15.19-2
  • 5.15.19-2-pve-5.15.19-3
  • 5.15.27-1-pve-5.15.27-1
  • 5.15.30-1-pve-5.15.30-1
  • 5.15.30-2-pve-5.15.30-3
  • 5.15.35-1-pve-5.15.35-1
  • 5.15.35-1-pve-5.15.35-2
  • 5.15.35-1-pve-5.15.35-3
  • 5.15.35-2-pve-5.15.35-4
  • 5.15.35-2-pve-5.15.35-5
  • 5.15.35-3-pve-5.15.35-6
  • 5.15.39-1-pve-5.15.39-1
  • 5.15.39-2-pve-5.15.39-2
  • 5.15.39-3-pve-5.15.39-3
  • 5.15.39-4-pve-5.15.39-4
  • 5.15.5-1-pve-5.15.5-1
  • 5.15.53-1-pve-5.15.53-1
  • 5.15.60-1-pve-5.15.60-1
  • 5.15.60-2-pve-5.15.60-2
  • 5.15.64-1-pve-5.15.64-1
  • 5.15.7-1-pve-5.15.7-1
  • 5.15.74-1-pve-5.15.74-1
  • 5.15.83-1-pve-5.15.83-1
  • 5.15.85-1-pve-5.15.85-1
RHEL 9 Released
15 kernels
  • 5.14.0-162.12.1.el9_1
  • 5.14.0-162.18.1.el9_1
  • 5.14.0-162.22.2.el9_1
  • 5.14.0-162.23.1.el9_1
  • 5.14.0-162.6.1.el9_1
  • 5.14.0-284.11.1.el9_2
  • 5.14.0-284.18.1.el9_2
  • 5.14.0-284.25.1.el9_2
  • 5.14.0-284.30.1.el9_2
  • 5.14.0-70.13.1.el9_0
  • 5.14.0-70.17.1.el9_0
  • 5.14.0-70.22.1.el9_0
  • 5.14.0-70.26.1.el9_0
  • 5.14.0-70.30.1.el9_0
  • 5.14.0-70.5.1.el9_0
Rocky Linux 9 Released
12 kernels
  • 5.14.0-284.30.1.el9_2
  • 5.14.0-162.12.1.el9_1.0.1
  • 5.14.0-162.12.1.el9_1.0.2
  • 5.14.0-162.18.1.el9_1
  • 5.14.0-162.22.2.el9_1
  • 5.14.0-162.23.1.el9_1
  • 5.14.0-162.6.1.el9_1.0.1
  • 5.14.0-162.6.1.el9_1
  • 5.14.0-70.22.1.el9_0
  • 5.14.0-70.26.1.el9_0
  • 5.14.0-70.30.1.el9_0
  • 5.14.0-284.11.1.el9_2
Ubuntu 18.04 AWS Focal Will Not Fix —
Ubuntu 18.04 Azure Focal Ready For Release —
Ubuntu 20.04 Ready For Release —
Ubuntu 20.04 AWS Ready For Release —
Ubuntu 20.04 Azure Ready For Release —
Ubuntu 20.04 GCP Ready For Release —
Ubuntu 20.04 HWE AWS Released
19 kernels
  • 5.15.0-1035.39~20.04.1
  • 5.15.0-1014.18~20.04.1
  • 5.15.0-1015.19~20.04.1
  • 5.15.0-1017.21~20.04.1
  • 5.15.0-1018.22~20.04.1
  • 5.15.0-1020.24~20.04.1
  • 5.15.0-1021.25~20.04.1
  • 5.15.0-1022.26~20.04.1
  • 5.15.0-1023.27~20.04.1
  • 5.15.0-1026.30~20.04.2
  • 5.15.0-1027.31~20.04.1
  • 5.15.0-1028.32~20.04.1
  • 5.15.0-1031.35~20.04.1
  • 5.15.0-1036.40~20.04.1
  • 5.15.0-1037.41~20.04.1
  • 5.15.0-1033.37~20.04.1
  • 5.15.0-1019.23~20.04.1
  • 5.15.0-1030.34~20.04.1
  • 5.15.0-1034.38~20.04.1
Ubuntu 20.04 HWE Azure Released
12 kernels
  • 5.15.0-1008.9~20.04.1
  • 5.15.0-1013.16~20.04.1
  • 5.15.0-1014.17~20.04.1
  • 5.15.0-1017.20~20.04.1
  • 5.15.0-1019.24~20.04.1
  • 5.15.0-1020.25~20.04.1
  • 5.15.0-1021.26~20.04.1
  • 5.15.0-1022.27~20.04.1
  • 5.15.0-1023.29~20.04.1
  • 5.15.0-1024.30~20.04.1
  • 5.15.0-1029.36~20.04.1
  • 5.15.0-1034.41~20.04.1
Ubuntu 22.04 Released
30 kernels
  • 5.15.0-39.42
  • 5.15.0-40.43
  • 5.15.0-41.44
  • 5.15.0-27.28
  • 5.15.0-28.29
  • 5.15.0-29.30
  • 5.15.0-30.31
  • 5.15.0-33.34
  • 5.15.0-35.36
  • 5.15.0-37.39
  • 5.15.0-43.46
  • 5.15.0-46.49
  • 5.15.0-47.51
  • 5.15.0-48.54
  • 5.15.0-50.56
  • 5.15.0-52.58
  • 5.15.0-53.59
  • 5.15.0-54.60
  • 5.15.0-56.62
  • 5.15.0-57.63
  • 5.15.0-58.64
  • 5.15.0-60.66
  • 5.15.0-67.74
  • 5.15.0-68.75
  • 5.15.0-69.76
  • 5.15.0-70.77
  • 5.15.0-71.78
  • 5.15.0-72.79
  • 5.15.0-73.80
  • 5.15.0-25.25
Ubuntu 22.04 AWS Released
26 kernels
  • 5.15.0-1036.40
  • 5.15.0-1037.41
  • 5.15.0-1004.6
  • 5.15.0-1005.7
  • 5.15.0-1008.10
  • 5.15.0-1009.11
  • 5.15.0-1011.14
  • 5.15.0-1013.17
  • 5.15.0-1014.18
  • 5.15.0-1015.19
  • 5.15.0-1017.21
  • 5.15.0-1018.22
  • 5.15.0-1020.24
  • 5.15.0-1021.25
  • 5.15.0-1022.26
  • 5.15.0-1023.27
  • 5.15.0-1024.29
  • 5.15.0-1026.30
  • 5.15.0-1027.31
  • 5.15.0-1028.32
  • 5.15.0-1030.34
  • 5.15.0-1031.35
  • 5.15.0-1032.36
  • 5.15.0-1033.37
  • 5.15.0-1034.38
  • 5.15.0-1035.39
Ubuntu 22.04 Azure Released
22 kernels
  • 5.15.0-1003.4
  • 5.15.0-1005.6
  • 5.15.0-1007.8
  • 5.15.0-1008.9
  • 5.15.0-1010.12
  • 5.15.0-1012.15
  • 5.15.0-1013.16
  • 5.15.0-1014.17
  • 5.15.0-1017.20
  • 5.15.0-1019.24
  • 5.15.0-1020.25
  • 5.15.0-1021.26
  • 5.15.0-1022.27
  • 5.15.0-1023.29
  • 5.15.0-1024.30
  • 5.15.0-1029.36
  • 5.15.0-1034.41
  • 5.15.0-1035.42
  • 5.15.0-1036.43
  • 5.15.0-1037.44
  • 5.15.0-1038.45
  • 5.15.0-1039.46