CVE-2025-21894: net: enetc: VFs do not support HWTSTAMP_TX_ONESTEP_SYNC

Published Apr 1, 2025
·
Updated

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

net: enetc: VFs do not support HWTSTAMPTXONESTEPSYNC

Actually ENETC VFs do not support HWTSTAMPTXONESTEPSYNC because only ENETC PF can access PMaSINGLESTEP registers. And there will be a crash if VFs are used to test one-step timestamp, the crash log as follows.

[ 129.110909] Unable to handle kernel paging request at virtual address 00000000000080c0 [ 129.287769] Call trace: [ 129.290219] enetcportmacwr+0x30/0xec (P) [ 129.294504] enetcstartxmit+0xda4/0xe74 [ 129.298525] enetcxmit+0x70/0xec [ 129.301848] devhardstartxmit+0x98/0x118

Affected Software

201 affected componentsFixes available
Linux Linux kernel
Linux Linux kernel>=5.3<6.6.83
Linux Linux kernel>=6.7<6.12.18
Linux Linux kernel>=6.13<6.13.6
Linux Linux kernel=6.14-rc1
Linux Linux kernel=6.14-rc2
Linux Linux kernel=6.14-rc3
Linux Linux kernel=6.14-rc4
debian/linux*
debian/linux<6.12.19-1
6.12.19-1
debian/linux<6.12.19-1
6.12.19-1
linux/kernel>=5.3.0<6.1.191
6.1.191
linux/kernel>=6.2.0<6.6.83
6.6.83
linux/kernel>=6.7.0<6.12.18
6.12.18
linux/kernel>=6.13.0<6.13.6
6.13.6
debian/linux<=6.1.176-1, <=6.1.190-1
6.12.107-16.12.115-27.2.12-17.2.15-1
ubuntu/linux-hwe-edge*
ubuntu/linux-aws-5.0*
ubuntu/linux-aws-5.3*
ubuntu/linux-aws-5.4*
ubuntu/linux-azure*
ubuntu/linux-azure-5.3*
ubuntu/linux-azure-5.4*
ubuntu/linux-azure-edge*
ubuntu/linux-gcp*
ubuntu/linux-gcp-5.3*
ubuntu/linux-gcp-5.4*
ubuntu/linux-gke-4.15*
ubuntu/linux-gke-5.4*
ubuntu/linux-gkeop-5.4*
ubuntu/linux-hwe*
ubuntu/linux-hwe-5.4*
ubuntu/linux-hwe-edge*
ubuntu/linux-ibm-5.4*
ubuntu/linux-oem*
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-oracle-5.4*
ubuntu/linux-raspi-5.4*
ubuntu/linux*
ubuntu/linux-aws*
ubuntu/linux-aws-5.11*
ubuntu/linux-aws-5.13*
ubuntu/linux-aws-5.15*
ubuntu/linux-aws-5.8*
ubuntu/linux-azure*
ubuntu/linux-azure-5.11*
ubuntu/linux-azure-5.13*
ubuntu/linux-azure-5.15*
ubuntu/linux-azure-5.8*
ubuntu/linux-azure-fde*
ubuntu/linux-azure-fde-5.15*
ubuntu/linux-bluefield*
ubuntu/linux-gcp*
ubuntu/linux-gcp-5.11*
ubuntu/linux-gcp-5.13*
ubuntu/linux-gcp-5.15*
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-5.15*
ubuntu/linux-hwe-5.8*
ubuntu/linux-ibm*
ubuntu/linux-ibm-5.15*
ubuntu/linux-intel-5.13*
ubuntu/linux-intel-iotg-5.15*
ubuntu/linux-iot*
ubuntu/linux-kvm*
ubuntu/linux-lowlatency-hwe-5.15*
ubuntu/linux-nvidia-tegra-5.15*
ubuntu/linux-oem-5.10*
ubuntu/linux-oem-5.13*
ubuntu/linux-oem-5.6*
ubuntu/linux-oracle*
ubuntu/linux-oracle-5.11*
ubuntu/linux-oracle-5.13*
ubuntu/linux-oracle-5.15*
ubuntu/linux-oracle-5.8*
ubuntu/linux-raspi*
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.11*
ubuntu/linux-riscv-5.15*
ubuntu/linux-riscv-5.8*
ubuntu/linux-xilinx-zynqmp*
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux*
ubuntu/linux-allwinner-5.19*
ubuntu/linux-aws*
ubuntu/linux-aws-5.19*
ubuntu/linux-aws-6.2*
ubuntu/linux-aws-6.5*
ubuntu/linux-aws-6.8<6.8.0-1039.41~22.04.1
6.8.0-1039.41~22.04.1
ubuntu/linux-azure*
ubuntu/linux-azure-5.19*
ubuntu/linux-azure-6.2*
ubuntu/linux-azure-6.5*
ubuntu/linux-azure-6.8<6.8.0-1036.42~22.04.1
6.8.0-1036.42~22.04.1
ubuntu/linux-azure-fde*
ubuntu/linux-azure-fde-5.19*
ubuntu/linux-azure-fde-6.2*
ubuntu/linux-gcp*
ubuntu/linux-gcp-5.19*
ubuntu/linux-gcp-6.2*
ubuntu/linux-gcp-6.5*
ubuntu/linux-gcp-6.8<6.8.0-1040.42~22.04.1
6.8.0-1040.42~22.04.1
ubuntu/linux-gke*
ubuntu/linux-gkeop*
ubuntu/linux-hwe-5.19*
ubuntu/linux-hwe-6.2*
ubuntu/linux-hwe-6.5*
ubuntu/linux-hwe-6.8<6.8.0-85.85~22.04.1
6.8.0-85.85~22.04.1
ubuntu/linux-ibm*
ubuntu/linux-ibm-6.8<6.8.0-1037.37~22.04.1
6.8.0-1037.37~22.04.1
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-intel-iotg*
ubuntu/linux-kvm*
ubuntu/linux-lowlatency*
ubuntu/linux-lowlatency-hwe-5.19*
ubuntu/linux-lowlatency-hwe-6.2*
ubuntu/linux-lowlatency-hwe-6.5*
ubuntu/linux-lowlatency-hwe-6.8<6.8.0-84.84.1~22.04.1
6.8.0-84.84.1~22.04.1
ubuntu/linux-nvidia*
ubuntu/linux-nvidia-6.2*
ubuntu/linux-nvidia-6.5*
ubuntu/linux-nvidia-6.8<6.8.0-1039.42~22.04.1
6.8.0-1039.42~22.04.1
ubuntu/linux-nvidia-tegra*
ubuntu/linux-nvidia-tegra-igx*
ubuntu/linux-oem-5.17*
ubuntu/linux-oem-6.0*
ubuntu/linux-oem-6.1*
ubuntu/linux-oem-6.5*
ubuntu/linux-oracle*
ubuntu/linux-oracle-6.5*
ubuntu/linux-oracle-6.8<6.8.0-1037.38~22.04.1
6.8.0-1037.38~22.04.1
ubuntu/linux-raspi*
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.19*
ubuntu/linux-riscv-6.5*
ubuntu/linux-riscv-6.8<6.8.0-84.84~22.04.1
6.8.0-84.84~22.04.1
ubuntu/linux-starfive-5.19*
ubuntu/linux-starfive-6.2*
ubuntu/linux-starfive-6.5*
ubuntu/linux-xilinx-zynqmp*
ubuntu/linux-bluefield*
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-realtime*
ubuntu/linux-realtime-6.8<6.8.1-1034.35~22.04.1
6.8.1-1034.35~22.04.1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<6.8.0-84.84
6.8.0-84.84
ubuntu/linux-aws<6.8.0-1039.41
6.8.0-1039.41
ubuntu/linux-azure<6.8.0-1038.44
6.8.0-1038.44
ubuntu/linux-azure-6.11<6.11.0-1018.18~24.04.1
6.11.0-1018.18~24.04.1
ubuntu/linux-azure-nvidia<6.8.0-1025.27
6.8.0-1025.27
ubuntu/linux-gcp<6.8.0-1040.42
6.8.0-1040.42
ubuntu/linux-gcp-6.11<6.11.0-1016.16~24.04.1
6.11.0-1016.16~24.04.1
ubuntu/linux-gke<6.8.0-1036.40
6.8.0-1036.40
ubuntu/linux-gkeop<6.8.0-1023.25
6.8.0-1023.25
ubuntu/linux-hwe-6.11<6.11.0-28.28~24.04.1
6.11.0-28.28~24.04.1
ubuntu/linux-ibm<6.8.0-1037.37
6.8.0-1037.37
ubuntu/linux-intel*
ubuntu/linux-lowlatency<6.8.0-84.84.1
6.8.0-84.84.1
ubuntu/linux-lowlatency-hwe-6.11<6.11.0-1015.16~24.04.2
6.11.0-1015.16~24.04.2
ubuntu/linux-nvidia<6.8.0-1039.42
6.8.0-1039.42
ubuntu/linux-nvidia-6.11<6.11.0-1012.12
6.11.0-1012.12
ubuntu/linux-nvidia-lowlatency<6.8.0-1039.42.1
6.8.0-1039.42.1
ubuntu/linux-nvidia-tegra<6.8.0-1010.10
6.8.0-1010.10
ubuntu/linux-oem-6.11<6.11.0-1024.24
6.11.0-1024.24
ubuntu/linux-oem-6.8*
ubuntu/linux-oracle<6.8.0-1037.38
6.8.0-1037.38
ubuntu/linux-raspi<6.8.0-1039.43
6.8.0-1039.43
ubuntu/linux-raspi-realtime*
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-xilinx<6.8.0-1018.19
6.8.0-1018.19
ubuntu/linux-raspi-realtime<6.8.0-2030.31
6.8.0-2030.31
ubuntu/linux-realtime<6.8.1-1034.35
6.8.1-1034.35
ubuntu/linux-aws-fips<6.8.0-1039.41+fips1
6.8.0-1039.41+fips1
ubuntu/linux-azure-fips<6.8.0-1040.46+fips1
6.8.0-1040.46+fips1
ubuntu/linux-fips<6.8.0-84.84+fips1
6.8.0-84.84+fips1
ubuntu/linux-gcp-fips<6.8.0-1040.42+fips1
6.8.0-1040.42+fips1
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 6.12.19-1
  2. Upgrade

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

    Fixed in 6.1.191
  3. Upgrade

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

    Fixed in 6.6.83
  4. Upgrade

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

    Fixed in 6.12.18
  5. Upgrade

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

    Fixed in 6.13.6
  6. Upgrade

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

    Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.12-1Fixed in 7.2.15-1
  7. Upgrade

    Upgrade ubuntu/linux-aws-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1039.41~22.04.1
  8. Upgrade

    Upgrade ubuntu/linux-azure-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1036.42~22.04.1
  9. Upgrade

    Upgrade ubuntu/linux-gcp-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1040.42~22.04.1
  10. Upgrade

    Upgrade ubuntu/linux-hwe-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-85.85~22.04.1
  11. Upgrade

    Upgrade ubuntu/linux-ibm-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1037.37~22.04.1
  12. Upgrade

    Upgrade ubuntu/linux-lowlatency-hwe-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-84.84.1~22.04.1
  13. Upgrade

    Upgrade ubuntu/linux-nvidia-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1039.42~22.04.1
  14. Upgrade

    Upgrade ubuntu/linux-oracle-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1037.38~22.04.1
  15. Upgrade

    Upgrade ubuntu/linux-riscv-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-84.84~22.04.1
  16. Upgrade

    Upgrade ubuntu/linux-realtime-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.1-1034.35~22.04.1
  17. Upgrade

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

    Fixed in 6.8.0-84.84
  18. Upgrade

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

    Fixed in 6.8.0-1039.41
  19. Upgrade

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

    Fixed in 6.8.0-1038.44
  20. Upgrade

    Upgrade ubuntu/linux-azure-6.11 to a version that resolves this vulnerability.

    Fixed in 6.11.0-1018.18~24.04.1
  21. Upgrade

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

    Fixed in 6.8.0-1025.27
  22. Upgrade

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

    Fixed in 6.8.0-1040.42
  23. Upgrade

    Upgrade ubuntu/linux-gcp-6.11 to a version that resolves this vulnerability.

    Fixed in 6.11.0-1016.16~24.04.1
  24. Upgrade

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

    Fixed in 6.8.0-1036.40
  25. Upgrade

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

    Fixed in 6.8.0-1023.25
  26. Upgrade

    Upgrade ubuntu/linux-hwe-6.11 to a version that resolves this vulnerability.

    Fixed in 6.11.0-28.28~24.04.1
  27. Upgrade

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

    Fixed in 6.8.0-1037.37
  28. Upgrade

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

    Fixed in 6.8.0-84.84.1
  29. Upgrade

    Upgrade ubuntu/linux-lowlatency-hwe-6.11 to a version that resolves this vulnerability.

    Fixed in 6.11.0-1015.16~24.04.2
  30. Upgrade

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

    Fixed in 6.8.0-1039.42
  31. Upgrade

    Upgrade ubuntu/linux-nvidia-6.11 to a version that resolves this vulnerability.

    Fixed in 6.11.0-1012.12
  32. Upgrade

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

    Fixed in 6.8.0-1039.42.1
  33. Upgrade

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

    Fixed in 6.8.0-1010.10
  34. Upgrade

    Upgrade ubuntu/linux-oem-6.11 to a version that resolves this vulnerability.

    Fixed in 6.11.0-1024.24
  35. Upgrade

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

    Fixed in 6.8.0-1037.38
  36. Upgrade

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

    Fixed in 6.8.0-1039.43
  37. Upgrade

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

    Fixed in 6.8.0-1018.19
  38. Upgrade

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

    Fixed in 6.8.0-2030.31
  39. Upgrade

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

    Fixed in 6.8.1-1034.35
  40. Upgrade

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

    Fixed in 6.8.0-1039.41+fips1
  41. Upgrade

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

    Fixed in 6.8.0-1040.46+fips1
  42. Upgrade

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

    Fixed in 6.8.0-84.84+fips1
  43. Upgrade

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

    Fixed in 6.8.0-1040.42+fips1
  44. Configuration

    Disable or do not enable HWTSTAMP_TX_ONESTEP_SYNC when using ENETC virtual functions, because VFs do not support access to the PMa_SINGLE_STEP registers and testing one-step timestamping can cause a crash.

    ENETC VFs HWTSTAMP_TX_ONESTEP_SYNC = disabled

Event History

Apr 1, 2025
CVE Published
via MITRE·03:26 PM
Data Sourced
via MITRE·03:26 PM
Description
Data Sourced
via OSV·03:26 PM
DescriptionAffected Software
Data Sourced
via NVD·04:15 PM
RemedyDescriptionSeverityAffected Software
Nov 2, 2025
Data Sourced
via Microsoft·01:01 AM
DescriptionSeverityWeakness
Nov 11, 2026
Data Sourced
via OSV·09:38 AM
Severity

Frequently Asked Questions

1

What is the severity of CVE-2025-21894?

CVE-2025-21894 is classified as a potentially critical vulnerability in the Linux kernel due to the risk of system crashes.

2

How do I fix CVE-2025-21894?

To mitigate CVE-2025-21894, you should update your Linux kernel to the latest stable version where this vulnerability has been resolved.

3

What systems are affected by CVE-2025-21894?

CVE-2025-21894 affects systems running the Linux kernel that utilize the ENETC virtual functions (VFs) for networking.

4

What does CVE-2025-21894 exploit?

CVE-2025-21894 exploits the lack of support for HWTSTAMP_TX_ONESTEP_SYNC in ENETC VFs, potentially leading to crashes.

5

Is there a workaround for CVE-2025-21894?

Currently, there are no known workarounds for CVE-2025-21894; the best defense is to apply the kernel update.

Company

Resources

Contact

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