CVE-2023-53420: ntfs: Fix panic about slab-out-of-bounds caused by ntfs_listxattr()

Published Sep 18, 2025
·
Updated

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

ntfs: Fix panic about slab-out-of-bounds caused by ntfslistxattr()

Here is a BUG report from syzbot:

BUG: KASAN: slab-out-of-bounds in ntfslistea fs/ntfs3/xattr.c:191 [inline] BUG: KASAN: slab-out-of-bounds in ntfslistxattr+0x401/0x570 fs/ntfs3/xattr.c:710 Read of size 1 at addr ffff888021acaf3d by task syz-executor128/3632

Call Trace: ntfslistea fs/ntfs3/xattr.c:191 [inline] ntfslistxattr+0x401/0x570 fs/ntfs3/xattr.c:710 vfslistxattr fs/xattr.c:457 [inline] listxattr+0x293/0x2d0 fs/xattr.c:804

Fix the logic of eaall iteration. When the ea->namelen is 0, return immediately, or Add2Ptr() would visit invalid memory in the next loop.

[almaz.alexandrovich@paragon-software.com: lines of the patch have changed]

Affected Software

123 affected componentsFixes available
Linux Kernel
Paragon Software ntfs3
Linux Linux kernel>=5.15<5.15.121
Linux Linux kernel>=5.16<6.1.39
Linux Linux kernel>=6.2<6.4.4
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<5.15.0-1047.52~20.04.1
5.15.0-1047.52~20.04.1
ubuntu/linux-azure-5.15<5.15.0-1049.56~20.04.1
5.15.0-1049.56~20.04.1
ubuntu/linux-gcp-5.15<5.15.0-1044.52~20.04.1
5.15.0-1044.52~20.04.1
ubuntu/linux-hwe-5.15<5.15.0-86.96~20.04.1
5.15.0-86.96~20.04.1
ubuntu/linux-ibm-5.15<5.15.0-1040.43~20.04.1
5.15.0-1040.43~20.04.1
ubuntu/linux-intel-iotg-5.15<5.15.0-1043.49~20.04.1
5.15.0-1043.49~20.04.1
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-86.95~20.04.1
5.15.0-86.95~20.04.1
ubuntu/linux-nvidia-tegra-5.15<5.15.0-1018.18~20.04.1
5.15.0-1018.18~20.04.1
ubuntu/linux-oracle-5.15<5.15.0-1045.51~20.04.1
5.15.0-1045.51~20.04.1
ubuntu/linux-riscv-5.15<5.15.0-1043.47~20.04.1
5.15.0-1043.47~20.04.1
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-gkeop-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<5.15.0-86.96
5.15.0-86.96
ubuntu/linux-allwinner-5.19*
ubuntu/linux-aws<5.15.0-1047.52
5.15.0-1047.52
ubuntu/linux-aws-5.19*
ubuntu/linux-aws-6.2*
ubuntu/linux-aws-6.5*
ubuntu/linux-azure<5.15.0-1049.56
5.15.0-1049.56
ubuntu/linux-azure-5.19*
ubuntu/linux-azure-6.2*
ubuntu/linux-azure-6.5*
ubuntu/linux-azure-fde<5.15.0-1049.56.1
5.15.0-1049.56.1
ubuntu/linux-azure-fde-5.19*
ubuntu/linux-azure-fde-6.2*
ubuntu/linux-gcp<5.15.0-1044.52
5.15.0-1044.52
ubuntu/linux-gcp-5.19*
ubuntu/linux-gcp-6.2*
ubuntu/linux-gcp-6.5*
ubuntu/linux-gke<5.15.0-1044.49
5.15.0-1044.49
ubuntu/linux-gkeop<5.15.0-1030.35
5.15.0-1030.35
ubuntu/linux-hwe-5.19*
ubuntu/linux-hwe-6.2*
ubuntu/linux-hwe-6.5*
ubuntu/linux-ibm<5.15.0-1040.43
5.15.0-1040.43
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-intel-iotg<5.15.0-1043.49
5.15.0-1043.49
ubuntu/linux-kvm<5.15.0-1044.49
5.15.0-1044.49
ubuntu/linux-lowlatency<5.15.0-86.95
5.15.0-86.95
ubuntu/linux-lowlatency-hwe-5.19*
ubuntu/linux-lowlatency-hwe-6.2*
ubuntu/linux-lowlatency-hwe-6.5*
ubuntu/linux-nvidia<5.15.0-1037.37
5.15.0-1037.37
ubuntu/linux-nvidia-6.2*
ubuntu/linux-nvidia-6.5*
ubuntu/linux-nvidia-tegra<5.15.0-1018.18
5.15.0-1018.18
ubuntu/linux-nvidia-tegra-igx<5.15.0-1005.5
5.15.0-1005.5
ubuntu/linux-oem-5.17*
ubuntu/linux-oem-6.0*
ubuntu/linux-oem-6.1*
ubuntu/linux-oem-6.5*
ubuntu/linux-oracle<5.15.0-1045.51
5.15.0-1045.51
ubuntu/linux-oracle-6.5*
ubuntu/linux-raspi<5.15.0-1040.43
5.15.0-1040.43
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<5.15.0-1025.29
5.15.0-1025.29
ubuntu/linux-bluefield<5.15.0-1027.29
5.15.0-1027.29
ubuntu/linux-intel-iot-realtime<5.15.0-1040.42
5.15.0-1040.42
ubuntu/linux-realtime<5.15.0-1048.54
5.15.0-1048.54
ubuntu/linux-fips*
ubuntu/linux-azure-6.11*
ubuntu/linux-gcp-6.11*
ubuntu/linux-hwe-6.11*
ubuntu/linux-intel*
ubuntu/linux-lowlatency-hwe-6.11*
ubuntu/linux-oem-6.11*
ubuntu/linux-oem-6.8*
ubuntu/linux-raspi-realtime*
ubuntu/linux-realtime*
ubuntu/linux-riscv*

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 5.15.0-1047.52~20.04.1
  2. Upgrade

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

    Fixed in 5.15.0-1049.56~20.04.1
  3. Upgrade

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

    Fixed in 5.15.0-1044.52~20.04.1
  4. Upgrade

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

    Fixed in 5.15.0-86.96~20.04.1
  5. Upgrade

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

    Fixed in 5.15.0-1040.43~20.04.1
  6. Upgrade

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

    Fixed in 5.15.0-1043.49~20.04.1
  7. Upgrade

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

    Fixed in 5.15.0-86.95~20.04.1
  8. Upgrade

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

    Fixed in 5.15.0-1018.18~20.04.1
  9. Upgrade

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

    Fixed in 5.15.0-1045.51~20.04.1
  10. Upgrade

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

    Fixed in 5.15.0-1043.47~20.04.1
  11. Upgrade

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

    Fixed in 5.15.0-86.96
  12. Upgrade

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

    Fixed in 5.15.0-1047.52
  13. Upgrade

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

    Fixed in 5.15.0-1049.56
  14. Upgrade

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

    Fixed in 5.15.0-1049.56.1
  15. Upgrade

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

    Fixed in 5.15.0-1044.52
  16. Upgrade

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

    Fixed in 5.15.0-1044.49
  17. Upgrade

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

    Fixed in 5.15.0-1030.35
  18. Upgrade

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

    Fixed in 5.15.0-1040.43
  19. Upgrade

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

    Fixed in 5.15.0-1043.49
  20. Upgrade

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

    Fixed in 5.15.0-1044.49
  21. Upgrade

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

    Fixed in 5.15.0-86.95
  22. Upgrade

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

    Fixed in 5.15.0-1037.37
  23. Upgrade

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

    Fixed in 5.15.0-1018.18
  24. Upgrade

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

    Fixed in 5.15.0-1005.5
  25. Upgrade

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

    Fixed in 5.15.0-1045.51
  26. Upgrade

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

    Fixed in 5.15.0-1040.43
  27. Upgrade

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

    Fixed in 5.15.0-1025.29
  28. Upgrade

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

    Fixed in 5.15.0-1027.29
  29. Upgrade

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

    Fixed in 5.15.0-1040.42
  30. Upgrade

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

    Fixed in 5.15.0-1048.54

Event History

Sep 18, 2025
CVE Published
via MITRE·04:04 PM
Data Sourced
via MITRE·04:04 PM
DescriptionSeverity
Data Sourced
via OSV·04:15 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·04:15 PM
RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2023-53420?

CVE-2023-53420 has a moderate severity rating as it involves a slab-out-of-bounds issue in the Linux kernel.

2

How do I fix CVE-2023-53420?

To fix CVE-2023-53420, update the Linux kernel or Paragon Software ntfs3 to the latest patched version.

3

Which versions of the Linux kernel are affected by CVE-2023-53420?

CVE-2023-53420 affects multiple versions of the Linux kernel prior to the patch being applied.

4

What does CVE-2023-53420 impact specifically?

CVE-2023-53420 impacts the ntfs_listxattr() function within the Linux kernel's ntfs module.

5

Is CVE-2023-53420 exploitable remotely?

CVE-2023-53420 is not considered remotely exploitable as it typically requires local access to the affected system.

Company

Resources

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