CVE-2022-50302: lockd: set other missing fields when unlocking files

Q: What is the severity of CVE-2022-50302?

CVE-2022-50302 is classified as a medium-severity vulnerability in the Linux kernel.

Q: How do I fix CVE-2022-50302?

To fix CVE-2022-50302, update your Linux kernel to the latest version that includes the patch for this vulnerability.

Q: What are the potential impacts of CVE-2022-50302?

CVE-2022-50302 can lead to system instability and crashes when re-exported NFSv3 encounters a NULL fl_file field.

Q: Which versions of Linux kernel are affected by CVE-2022-50302?

CVE-2022-50302 affects specific versions of the Linux kernel where the vfs_lock_file() function is improperly handling file locks.

Q: Is CVE-2022-50302 under active exploitation?

As of now, there is no public evidence suggesting that CVE-2022-50302 is actively being exploited in the wild.

Published Sep 15, 2025

Updated

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

lockd: set other missing fields when unlocking files

vfslockfile() expects the struct filelock to be fully initialised by the caller. Re-exported NFSv3 has been seen to Oops if the flfile field is NULL.

Affected Software

122 affected componentsFixes available

Linux Linux kernel

Linux Linux kernel>=5.15.56<5.15.86

Linux Linux kernel>=5.18.13<5.19

Linux Linux kernel>=5.19.1<6.0.16

Linux Linux kernel>=6.1<6.1.2

Linux Linux kernel=5.19

Linux Linux kernel=5.19-rc7

Linux Linux kernel=5.19-rc8

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<5.15.0-1033.37~20.04.1

5.15.0-1033.37~20.04.1

ubuntu/linux-azure-5.15<5.15.0-1035.42~20.04.1

5.15.0-1035.42~20.04.1

ubuntu/linux-gcp-5.15<5.15.0-1031.38~20.04.1

5.15.0-1031.38~20.04.1

ubuntu/linux-hwe-5.15<5.15.0-69.76~20.04.1

5.15.0-69.76~20.04.1

ubuntu/linux-intel-iotg-5.15<5.15.0-1027.32~20.04.1

5.15.0-1027.32~20.04.1

ubuntu/linux-lowlatency-hwe-5.15<5.15.0-69.76~20.04.1

5.15.0-69.76~20.04.1

ubuntu/linux-nvidia-tegra-5.15<5.15.0-1014.14~20.04.1

5.15.0-1014.14~20.04.1

ubuntu/linux-oracle-5.15<5.15.0-1032.38~20.04.1

5.15.0-1032.38~20.04.1

ubuntu/linux-riscv-5.15<5.15.0-1030.34~20.04.1

5.15.0-1030.34~20.04.1

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<5.15.0-69.76

5.15.0-69.76

ubuntu/linux-allwinner-5.19*

ubuntu/linux-aws<5.15.0-1033.37

5.15.0-1033.37

ubuntu/linux-aws-5.19*

ubuntu/linux-aws-6.2*

ubuntu/linux-aws-6.5*

ubuntu/linux-azure<5.15.0-1035.42

5.15.0-1035.42

ubuntu/linux-azure-5.19*

ubuntu/linux-azure-6.2*

ubuntu/linux-azure-6.5*

ubuntu/linux-azure-fde<5.15.0-1035.42.1

5.15.0-1035.42.1

ubuntu/linux-azure-fde-5.19*

ubuntu/linux-azure-fde-6.2*

ubuntu/linux-gcp<5.15.0-1031.38

5.15.0-1031.38

ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

ubuntu/linux-gcp-6.5*

ubuntu/linux-gke<5.15.0-1030.35

5.15.0-1030.35

ubuntu/linux-gkeop<5.15.0-1017.22

5.15.0-1017.22

ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-hwe-6.5*

ubuntu/linux-ibm<5.15.0-1027.30

5.15.0-1027.30

ubuntu/linux-intel-iot-realtime*

ubuntu/linux-intel-iotg<5.15.0-1027.32

5.15.0-1027.32

ubuntu/linux-kvm<5.15.0-1030.35

5.15.0-1030.35

ubuntu/linux-lowlatency<5.15.0-69.76

5.15.0-69.76

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-lowlatency-hwe-6.5*

ubuntu/linux-nvidia<5.15.0-1023.23

5.15.0-1023.23

ubuntu/linux-nvidia-6.2*

ubuntu/linux-nvidia-6.5*

ubuntu/linux-oem-5.17*

ubuntu/linux-oem-6.0*

ubuntu/linux-oem-6.1*

ubuntu/linux-oem-6.5*

ubuntu/linux-oracle<5.15.0-1032.38

5.15.0-1032.38

ubuntu/linux-oracle-6.5*

ubuntu/linux-raspi<5.15.0-1026.28

5.15.0-1026.28

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-bluefield<5.15.0-1015.17

5.15.0-1015.17

ubuntu/linux-intel-iot-realtime<5.15.0-1023.28

5.15.0-1023.28

ubuntu/linux-realtime<5.15.0-1034.37

5.15.0-1034.37

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*

ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1033.37~20.04.1
Upgrade
Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1035.42~20.04.1
Upgrade
Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1031.38~20.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-69.76~20.04.1
Upgrade
Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1027.32~20.04.1
Upgrade
Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-69.76~20.04.1
Upgrade
Upgrade ubuntu/linux-nvidia-tegra-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1014.14~20.04.1
Upgrade
Upgrade ubuntu/linux-oracle-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1032.38~20.04.1
Upgrade
Upgrade ubuntu/linux-riscv-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1030.34~20.04.1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 5.15.0-69.76
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 5.15.0-1033.37
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 5.15.0-1035.42
Upgrade
Upgrade ubuntu/linux-azure-fde to a version that resolves this vulnerability.
Fixed in 5.15.0-1035.42.1
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 5.15.0-1031.38
Upgrade
Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.
Fixed in 5.15.0-1030.35
Upgrade
Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.
Fixed in 5.15.0-1017.22
Upgrade
Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.
Fixed in 5.15.0-1027.30
Upgrade
Upgrade ubuntu/linux-intel-iotg to a version that resolves this vulnerability.
Fixed in 5.15.0-1027.32
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 5.15.0-1030.35
Upgrade
Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.
Fixed in 5.15.0-69.76
Upgrade
Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.
Fixed in 5.15.0-1023.23
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 5.15.0-1032.38
Upgrade
Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.
Fixed in 5.15.0-1026.28
Upgrade
Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.
Fixed in 5.15.0-1015.17
Upgrade
Upgrade ubuntu/linux-intel-iot-realtime to a version that resolves this vulnerability.
Fixed in 5.15.0-1023.28
Upgrade
Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.
Fixed in 5.15.0-1034.37

Event History

Sep 15, 2025

CVE Published

via MITRE·02:45 PM

Data Sourced

via MITRE·02:45 PM

DescriptionSeverity

Data Sourced

via OSV·03:15 PM

DescriptionSeverityAffected Software

Data Sourced

via NVD·03:15 PM

RemedyDescriptionSeverityAffected Software

Frequently Asked Questions

What is the severity of CVE-2022-50302?

CVE-2022-50302 is classified as a medium-severity vulnerability in the Linux kernel.

How do I fix CVE-2022-50302?

To fix CVE-2022-50302, update your Linux kernel to the latest version that includes the patch for this vulnerability.

What are the potential impacts of CVE-2022-50302?

CVE-2022-50302 can lead to system instability and crashes when re-exported NFSv3 encounters a NULL fl_file field.

Which versions of Linux kernel are affected by CVE-2022-50302?

CVE-2022-50302 affects specific versions of the Linux kernel where the vfs_lock_file() function is improperly handling file locks.

Is CVE-2022-50302 under active exploitation?

As of now, there is no public evidence suggesting that CVE-2022-50302 is actively being exploited in the wild.

CVE-2022-50302: lockd: set other missing fields when unlocking files

Affected Software

Remediation

Event History

Frequently Asked Questions

What is the severity of CVE-2022-50302?

How do I fix CVE-2022-50302?

What are the potential impacts of CVE-2022-50302?

Which versions of Linux kernel are affected by CVE-2022-50302?

Is CVE-2022-50302 under active exploitation?

Company

Resources

Contact