CVE-2023-52755: ksmbd: fix slab out of bounds write in smb_inherit_dacl()

Published May 21, 2024
·
Updated

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix slab out of bounds write in smbinheritdacl()

slab out-of-bounds write is caused by that offsets is bigger than pntsd allocation size. This patch add the check to validate 3 offsets using allocation size.

Affected Software

124 affected componentsFixes available
Microsoft azl3 kernel 6.6.3.1-1
Patch available
Microsoft cbl2 kernel 5.15.176.3-3
Patch available
Microsoft cbl2 kernel 5.15.140.1-1
Patch available
Microsoft cbl2 kernel 5.15.176.3-3
Patch available
Microsoft azl3 kernel 6.6.82.1-1
Patch available
Linux Linux kernel>=5.15<5.15.140
Linux Linux kernel>=5.16<6.1.64
Linux Linux kernel>=6.2<6.5.13
Linux Linux kernel>=6.6<6.6.3
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-hwe-edge*
ubuntu/linux-oem*
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-aws-5.15<5.15.0-1056.61~20.04.1
5.15.0-1056.61~20.04.1
ubuntu/linux-azure-5.15<5.15.0-1058.66~20.04.2
5.15.0-1058.66~20.04.2
ubuntu/linux-gcp-5.15<5.15.0-1053.61~20.04.1
5.15.0-1053.61~20.04.1
ubuntu/linux-gkeop-5.15<5.15.0-1038.44~20.04.1
5.15.0-1038.44~20.04.1
ubuntu/linux-hwe-5.15<5.15.0-100.110~20.04.1
5.15.0-100.110~20.04.1
ubuntu/linux-ibm-5.15<5.15.0-1048.51~20.04.1
5.15.0-1048.51~20.04.1
ubuntu/linux-intel-iotg-5.15<5.15.0-1050.56~20.04.1
5.15.0-1050.56~20.04.1
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-100.110~20.04.1
5.15.0-100.110~20.04.1
ubuntu/linux-nvidia-tegra-5.15<5.15.0-1025.25~20.04.1
5.15.0-1025.25~20.04.1
ubuntu/linux-oracle-5.15<5.15.0-1053.59~20.04.1
5.15.0-1053.59~20.04.1
ubuntu/linux-riscv-5.15<5.15.0-1051.55~20.04.1
5.15.0-1051.55~20.04.1
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-azure-fde*
ubuntu/linux-gcp-5.11*
ubuntu/linux-gcp-5.13*
ubuntu/linux-gcp-5.8*
ubuntu/linux-gke*
ubuntu/linux-gke-5.15*
ubuntu/linux-gkeop*
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<5.15.0-100.110
5.15.0-100.110
ubuntu/linux-allwinner-5.19*
ubuntu/linux-aws<5.15.0-1056.61
5.15.0-1056.61
ubuntu/linux-aws-5.19*
ubuntu/linux-aws-6.2*
ubuntu/linux-aws-6.5*
ubuntu/linux-azure<5.15.0-1058.66
5.15.0-1058.66
ubuntu/linux-azure-5.19*
ubuntu/linux-azure-6.2*
ubuntu/linux-azure-6.5*
ubuntu/linux-azure-fde<5.15.0-1058.66.1
5.15.0-1058.66.1
ubuntu/linux-azure-fde-5.19*
ubuntu/linux-azure-fde-6.2*
ubuntu/linux-gcp<5.15.0-1053.61
5.15.0-1053.61
ubuntu/linux-gcp-5.19*
ubuntu/linux-gcp-6.2*
ubuntu/linux-gcp-6.5*
ubuntu/linux-gke<5.15.0-1052.57
5.15.0-1052.57
ubuntu/linux-gkeop<5.15.0-1038.44
5.15.0-1038.44
ubuntu/linux-hwe-5.19*
ubuntu/linux-hwe-6.2*
ubuntu/linux-hwe-6.5*
ubuntu/linux-ibm<5.15.0-1048.51
5.15.0-1048.51
ubuntu/linux-intel-iotg<5.15.0-1050.56
5.15.0-1050.56
ubuntu/linux-kvm<5.15.0-1052.57
5.15.0-1052.57
ubuntu/linux-lowlatency<5.15.0-100.110
5.15.0-100.110
ubuntu/linux-lowlatency-hwe-5.19*
ubuntu/linux-lowlatency-hwe-6.2*
ubuntu/linux-lowlatency-hwe-6.5*
ubuntu/linux-nvidia<5.15.0-1046.46
5.15.0-1046.46
ubuntu/linux-nvidia-6.2*
ubuntu/linux-nvidia-6.5<6.5.0-1014.14
6.5.0-1014.14
ubuntu/linux-nvidia-tegra<5.15.0-1025.25
5.15.0-1025.25
ubuntu/linux-nvidia-tegra-igx<5.15.0-1012.12
5.15.0-1012.12
ubuntu/linux-oem-5.17*
ubuntu/linux-oem-6.0*
ubuntu/linux-oem-6.1*
ubuntu/linux-oem-6.5*
ubuntu/linux-oracle<5.15.0-1053.59
5.15.0-1053.59
ubuntu/linux-oracle-6.5*
ubuntu/linux-raspi<5.15.0-1048.51
5.15.0-1048.51
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.19*
ubuntu/linux-riscv-6.5*
ubuntu/linux-starfive-5.19*
ubuntu/linux-starfive-6.2*
ubuntu/linux-starfive-6.5*
ubuntu/linux-xilinx-zynqmp<5.15.0-1030.34
5.15.0-1030.34
ubuntu/linux-bluefield<5.15.0-1037.39
5.15.0-1037.39
ubuntu/linux-intel-iot-realtime<5.15.0-1048.50
5.15.0-1048.50
ubuntu/linux-realtime<5.15.0-1056.63
5.15.0-1056.63
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux-aws-fips<5.15.0-1056.61+fips1
5.15.0-1056.61+fips1
ubuntu/linux-fips<5.15.0-100.110+fips1
5.15.0-100.110+fips1
ubuntu/linux-gcp-fips<5.15.0-1055.63+fips2
5.15.0-1055.63+fips2
ubuntu/linux-raspi-realtime*
ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 5.15.0-1056.61~20.04.1
  2. Upgrade

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

    Fixed in 5.15.0-1058.66~20.04.2
  3. Upgrade

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

    Fixed in 5.15.0-1053.61~20.04.1
  4. Upgrade

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

    Fixed in 5.15.0-1038.44~20.04.1
  5. Upgrade

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

    Fixed in 5.15.0-100.110~20.04.1
  6. Upgrade

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

    Fixed in 5.15.0-1048.51~20.04.1
  7. Upgrade

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

    Fixed in 5.15.0-1050.56~20.04.1
  8. Upgrade

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

    Fixed in 5.15.0-100.110~20.04.1
  9. Upgrade

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

    Fixed in 5.15.0-1025.25~20.04.1
  10. Upgrade

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

    Fixed in 5.15.0-1053.59~20.04.1
  11. Upgrade

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

    Fixed in 5.15.0-1051.55~20.04.1
  12. Upgrade

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

    Fixed in 5.15.0-100.110
  13. Upgrade

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

    Fixed in 5.15.0-1056.61
  14. Upgrade

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

    Fixed in 5.15.0-1058.66
  15. Upgrade

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

    Fixed in 5.15.0-1058.66.1
  16. Upgrade

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

    Fixed in 5.15.0-1053.61
  17. Upgrade

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

    Fixed in 5.15.0-1052.57
  18. Upgrade

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

    Fixed in 5.15.0-1038.44
  19. Upgrade

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

    Fixed in 5.15.0-1048.51
  20. Upgrade

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

    Fixed in 5.15.0-1050.56
  21. Upgrade

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

    Fixed in 5.15.0-1052.57
  22. Upgrade

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

    Fixed in 5.15.0-100.110
  23. Upgrade

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

    Fixed in 5.15.0-1046.46
  24. Upgrade

    Upgrade ubuntu/linux-nvidia-6.5 to a version that resolves this vulnerability.

    Fixed in 6.5.0-1014.14
  25. Upgrade

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

    Fixed in 5.15.0-1025.25
  26. Upgrade

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

    Fixed in 5.15.0-1012.12
  27. Upgrade

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

    Fixed in 5.15.0-1053.59
  28. Upgrade

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

    Fixed in 5.15.0-1048.51
  29. Upgrade

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

    Fixed in 5.15.0-1030.34
  30. Upgrade

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

    Fixed in 5.15.0-1037.39
  31. Upgrade

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

    Fixed in 5.15.0-1048.50
  32. Upgrade

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

    Fixed in 5.15.0-1056.63
  33. Upgrade

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

    Fixed in 5.15.0-1056.61+fips1
  34. Upgrade

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

    Fixed in 5.15.0-100.110+fips1
  35. Upgrade

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

    Fixed in 5.15.0-1055.63+fips2
  36. Compensating control

    In ksmbd's smb_inherit_dacl(), validate all three offsets against the pntsd allocation size before performing writes.

Event History

May 21, 2024
CVE Published
via MITRE·03:30 PM
Data Sourced
via MITRE·03:30 PM
DescriptionSeverity
Data Sourced
via OSV·04:15 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·04:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Sep 4, 2025
Data Sourced
via Microsoft·04:22 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·04:22 AM
Affected Software

Frequently Asked Questions

1

What is the severity of CVE-2023-52755?

The severity of CVE-2023-52755 is categorized as medium due to the potential for out-of-bounds memory access in the kSMBD component.

2

How do I fix CVE-2023-52755?

To fix CVE-2023-52755, upgrade your Linux kernel to versions 5.15.140, 6.1.64, or any version from 6.2 to 6.6.3 or later.

3

Who is affected by CVE-2023-52755?

CVE-2023-52755 affects users running specific versions of the Linux kernel, particularly those between 5.15 and 6.6.3.

4

What type of vulnerability is CVE-2023-52755?

CVE-2023-52755 is a memory corruption vulnerability related to slab out-of-bounds write in the Linux kernel.

5

When was CVE-2023-52755 resolved?

CVE-2023-52755 was resolved with a patch released in the Linux kernel after the discovery of the vulnerability.

Company

Resources

Contact

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