CVE-2023-38426: High severity Linux Linux kernel vulnerability

Published Jul 17, 2023
·
Updated

An issue was discovered in the Linux kernel before 6.3.4. ksmbd has an out-of-bounds read in smb2findcontextvals when createcontext's namelen is larger than the tag length.

Affected Software

103 affected componentsFixes available
Linux Linux kernel<6.3.4
Linux Linux kernel>=5.15<5.15.113
Linux Linux kernel>=5.16<6.1.30
Linux Linux kernel>=6.2<6.3.4
NetApp Solidfire \& Hci Management Node
NetApp Solidfire \& Hci Storage Node
NetApp H300s
NetApp H410s
NetApp H500s
NetApp H700s
debian/linux
5.10.223-15.10.234-16.1.129-16.1.135-16.12.25-16.12.27-1
ubuntu/linux-hwe-edge*
ubuntu/linux-aws-5.0*
ubuntu/linux-aws-5.3*
ubuntu/linux-azure*
ubuntu/linux-azure-5.3*
ubuntu/linux-azure-edge*
ubuntu/linux-gcp*
ubuntu/linux-gcp-5.3*
ubuntu/linux-gke-4.15*
ubuntu/linux-gke-5.4*
ubuntu/linux-gkeop-5.4*
ubuntu/linux-hwe*
ubuntu/linux-oem*
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-aws-5.15<5.15.0-1044.49~20.04.1
5.15.0-1044.49~20.04.1
ubuntu/linux-azure-5.15<5.15.0-1046.53~20.04.1
5.15.0-1046.53~20.04.1
ubuntu/linux-gcp-5.15<5.15.0-1041.49~20.04.1
5.15.0-1041.49~20.04.1
ubuntu/linux-gkeop-5.15<5.15.0-1027.32~20.04.1
5.15.0-1027.32~20.04.1
ubuntu/linux-hwe-5.15<5.15.0-83.92~20.04.1
5.15.0-83.92~20.04.1
ubuntu/linux-ibm-5.15<5.15.0-1037.40~20.04.1
5.15.0-1037.40~20.04.1
ubuntu/linux-intel-iotg-5.15<5.15.0-1040.46~20.04.1
5.15.0-1040.46~20.04.1
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-83.92~20.04.1
5.15.0-83.92~20.04.1
ubuntu/linux-nvidia-tegra-5.15<5.15.0-1017.17~20.04.1
5.15.0-1017.17~20.04.1
ubuntu/linux-oracle-5.15<5.15.0-1042.48~20.04.1
5.15.0-1042.48~20.04.1
ubuntu/linux-riscv-5.15<5.15.0-1040.44~20.04.3
5.15.0-1040.44~20.04.3
ubuntu/linux-aws-5.11*
ubuntu/linux-aws-5.13*
ubuntu/linux-aws-5.8*
ubuntu/linux-azure-5.11*
ubuntu/linux-azure-5.13*
ubuntu/linux-azure-5.8*
ubuntu/linux-gcp-5.11*
ubuntu/linux-gcp-5.13*
ubuntu/linux-gcp-5.8*
ubuntu/linux-gke-5.15*
ubuntu/linux-hwe-5.11*
ubuntu/linux-hwe-5.13*
ubuntu/linux-hwe-5.8*
ubuntu/linux-intel-5.13*
ubuntu/linux-oem-5.10*
ubuntu/linux-oem-5.13*
ubuntu/linux-oem-5.6*
ubuntu/linux-oracle-5.11*
ubuntu/linux-oracle-5.13*
ubuntu/linux-oracle-5.8*
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.11*
ubuntu/linux-riscv-5.8*
ubuntu/linux<5.15.0-83.92
5.15.0-83.92
ubuntu/linux-allwinner-5.19*
ubuntu/linux-aws<5.15.0-1044.49
5.15.0-1044.49
ubuntu/linux-aws-5.19*
ubuntu/linux-aws-6.2<6.2.0-1011.11~22.04.1
6.2.0-1011.11~22.04.1
ubuntu/linux-azure<5.15.0-1046.53
5.15.0-1046.53
ubuntu/linux-azure-5.19*
ubuntu/linux-azure-fde<5.15.0-1046.53.1
5.15.0-1046.53.1
ubuntu/linux-azure-fde-5.19*
ubuntu/linux-gcp<5.15.0-1041.49
5.15.0-1041.49
ubuntu/linux-gcp-5.19*
ubuntu/linux-gcp-6.2<6.2.0-1013.13~22.04.1
6.2.0-1013.13~22.04.1
ubuntu/linux-gke<5.15.0-1041.46
5.15.0-1041.46
ubuntu/linux-gkeop<5.15.0-1027.32
5.15.0-1027.32
ubuntu/linux-hwe-5.19*
ubuntu/linux-hwe-6.2<6.2.0-32.32~22.04.1
6.2.0-32.32~22.04.1
ubuntu/linux-ibm<5.15.0-1037.40
5.15.0-1037.40
ubuntu/linux-intel-iotg<5.15.0-1039.45
5.15.0-1039.45
ubuntu/linux-kvm<5.15.0-1041.46
5.15.0-1041.46
ubuntu/linux-lowlatency<5.15.0-83.92
5.15.0-83.92
ubuntu/linux-lowlatency-hwe-5.19*
ubuntu/linux-lowlatency-hwe-6.2<6.2.0-1012.12~22.04.1
6.2.0-1012.12~22.04.1
ubuntu/linux-nvidia<5.15.0-1032.32
5.15.0-1032.32
ubuntu/linux-nvidia-6.2<6.2.0-1010.10
6.2.0-1010.10
ubuntu/linux-nvidia-tegra<5.15.0-1017.17
5.15.0-1017.17
ubuntu/linux-nvidia-tegra-igx<5.15.0-1004.4
5.15.0-1004.4
ubuntu/linux-oem-5.17*
ubuntu/linux-oem-6.0*
ubuntu/linux-oem-6.1<6.1.0-1016.16
6.1.0-1016.16
ubuntu/linux-oracle<5.15.0-1042.48
5.15.0-1042.48
ubuntu/linux-raspi<5.15.0-1037.40
5.15.0-1037.40
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.19*
ubuntu/linux-starfive-5.19*
ubuntu/linux-xilinx-zynqmp<5.15.0-1025.29
5.15.0-1025.29
ubuntu/linux-bluefield<5.15.0-1023.25
5.15.0-1023.25
ubuntu/linux-intel-iot-realtime<5.15.0-1038.40
5.15.0-1038.40
ubuntu/linux-realtime<5.15.0-1045.50
5.15.0-1045.50
ubuntu/linux-fips*
ubuntu/linux-raspi-realtime*
ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 5.10.223-1Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.25-1Fixed in 6.12.27-1
  2. Upgrade

    Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1044.49~20.04.1
  3. Upgrade

    Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1046.53~20.04.1
  4. Upgrade

    Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1041.49~20.04.1
  5. Upgrade

    Upgrade ubuntu/linux-gkeop-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1027.32~20.04.1
  6. Upgrade

    Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-83.92~20.04.1
  7. Upgrade

    Upgrade ubuntu/linux-ibm-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1037.40~20.04.1
  8. Upgrade

    Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1040.46~20.04.1
  9. Upgrade

    Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-83.92~20.04.1
  10. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1017.17~20.04.1
  11. Upgrade

    Upgrade ubuntu/linux-oracle-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1042.48~20.04.1
  12. Upgrade

    Upgrade ubuntu/linux-riscv-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1040.44~20.04.3
  13. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 5.15.0-83.92
  14. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 5.15.0-1044.49
  15. Upgrade

    Upgrade ubuntu/linux-aws-6.2 to a version that resolves this vulnerability.

    Fixed in 6.2.0-1011.11~22.04.1
  16. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 5.15.0-1046.53
  17. Upgrade

    Upgrade ubuntu/linux-azure-fde to a version that resolves this vulnerability.

    Fixed in 5.15.0-1046.53.1
  18. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 5.15.0-1041.49
  19. Upgrade

    Upgrade ubuntu/linux-gcp-6.2 to a version that resolves this vulnerability.

    Fixed in 6.2.0-1013.13~22.04.1
  20. Upgrade

    Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.

    Fixed in 5.15.0-1041.46
  21. Upgrade

    Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.

    Fixed in 5.15.0-1027.32
  22. Upgrade

    Upgrade ubuntu/linux-hwe-6.2 to a version that resolves this vulnerability.

    Fixed in 6.2.0-32.32~22.04.1
  23. Upgrade

    Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.

    Fixed in 5.15.0-1037.40
  24. Upgrade

    Upgrade ubuntu/linux-intel-iotg to a version that resolves this vulnerability.

    Fixed in 5.15.0-1039.45
  25. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 5.15.0-1041.46
  26. Upgrade

    Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.15.0-83.92
  27. Upgrade

    Upgrade ubuntu/linux-lowlatency-hwe-6.2 to a version that resolves this vulnerability.

    Fixed in 6.2.0-1012.12~22.04.1
  28. Upgrade

    Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.

    Fixed in 5.15.0-1032.32
  29. Upgrade

    Upgrade ubuntu/linux-nvidia-6.2 to a version that resolves this vulnerability.

    Fixed in 6.2.0-1010.10
  30. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra to a version that resolves this vulnerability.

    Fixed in 5.15.0-1017.17
  31. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra-igx to a version that resolves this vulnerability.

    Fixed in 5.15.0-1004.4
  32. Upgrade

    Upgrade ubuntu/linux-oem-6.1 to a version that resolves this vulnerability.

    Fixed in 6.1.0-1016.16
  33. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 5.15.0-1042.48
  34. Upgrade

    Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.

    Fixed in 5.15.0-1037.40
  35. Upgrade

    Upgrade ubuntu/linux-xilinx-zynqmp to a version that resolves this vulnerability.

    Fixed in 5.15.0-1025.29
  36. Upgrade

    Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.

    Fixed in 5.15.0-1023.25
  37. Upgrade

    Upgrade ubuntu/linux-intel-iot-realtime to a version that resolves this vulnerability.

    Fixed in 5.15.0-1038.40
  38. Upgrade

    Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.

    Fixed in 5.15.0-1045.50
  39. Upgrade

    Upgrade Linux kernel (ksmbd) to a version that resolves this vulnerability.

    Fixed in 6.3.4
  40. Compensating control

    If you cannot upgrade immediately, disable or restrict use/access to ksmbd (e.g., disable the KSMBD service) to reduce exposure to the smb2_find_context_vals out-of-bounds read.

Event History

Jul 17, 2023
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Jul 18, 2023
Data Sourced
12:15 AM
Description
Data Sourced
via OSV·12:15 AM
DescriptionSeverityAffected Software
Data Sourced
via NVD·12:15 AM
RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2023-38426?

CVE-2023-38426 has a high severity rating due to the out-of-bounds read vulnerability in the Linux kernel.

2

How do I fix CVE-2023-38426?

To fix CVE-2023-38426, upgrade your Linux kernel to version 6.3.4 or later.

3

Which versions of Linux are affected by CVE-2023-38426?

CVE-2023-38426 affects Linux kernel versions earlier than 6.3.4, including version 5.15.113 and those within the 5.16 to 6.1.30 range.

4

What software is impacted by CVE-2023-38426?

CVE-2023-38426 impacts the Linux kernel and specific NetApp solidfire and HCI management and storage nodes.

5

Is there a patch available for CVE-2023-38426?

Yes, there are patched versions available, including 5.10.223-1 and 6.12.12-1, among others.

Company

Resources

Contact

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