CVE-2022-50331: wwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new()

Q: What is the severity of CVE-2022-50331?

CVE-2022-50331 has been categorized with a severity level that indicates potential risk of memory leaks in the Linux kernel.

Q: How do I fix CVE-2022-50331?

To fix CVE-2022-50331, it is recommended to update to the latest version of the Linux kernel where the vulnerability has been resolved.

Q: What types of devices are affected by CVE-2022-50331?

CVE-2022-50331 affects devices using the Linux kernel, specifically those that utilize the wwan_hwsim module.

Q: What causes the memory leak in CVE-2022-50331?

The memory leak in CVE-2022-50331 is caused by a failure in the device_register() function not properly decreasing the reference count of the kobject.

Q: Is CVE-2022-50331 actively being exploited?

As of the latest information, there is no indication that CVE-2022-50331 is being actively exploited in the wild.

Published Sep 15, 2025

Updated

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

wwanhwsim: fix possible memory leak in wwanhwsimdevnew()

Inject fault while probing module, if deviceregister() fails, but the refcount of kobject is not decreased to 0, the name allocated in devsetname() is leaked. Fix this by calling putdevice(), so that name can be freed in callback function kobjectcleanup().

unreferenced object 0xffff88810152ad20 (size 8): comm "modprobe", pid 252, jiffies 4294849206 (age 22.713s) hex dump (first 8 bytes): 68 77 73 69 6d 30 00 ff hwsim0.. backtrace: [<000000009c3504ed>] kmallocnodetrackcaller+0x44/0x1b0 [<00000000c0228a5e>] kvasprintf+0xb5/0x140 [<00000000cff8c21f>] kvasprintfconst+0x55/0x180 [<0000000055a1e073>] kobjectsetnamevargs+0x56/0x150 [<000000000a80b139>] devsetname+0xab/0xe0

Affected Software

121 affected componentsFixes available

Linux Kernel

Linux Linux kernel>=5.14<5.15.76

Linux Linux kernel>=5.16<6.0.6

Linux Linux kernel=6.1-rc1

debian/linux<6.0.6-1

6.0.6-1

debian/linux<6.0.6-1

6.0.6-1

debian/linux<6.0.6-1

6.0.6-1

linux/kernel>=5.14.0<5.15.76

5.15.76

linux/kernel>=5.16.0<6.0.6

6.0.6

debian/linux

6.1.176-16.1.190-16.12.107-16.12.115-27.2.15-1

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-hwe-edge*

ubuntu/linux-oem*

ubuntu/linux-oracle-5.0*

ubuntu/linux-oracle-5.3*

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

5.15.0-1030.34~20.04.1

ubuntu/linux-azure-5.15<5.15.0-1033.40~20.04.1

5.15.0-1033.40~20.04.1

ubuntu/linux-gcp-5.15<5.15.0-1029.36~20.04.1

5.15.0-1029.36~20.04.1

ubuntu/linux-hwe-5.15<5.15.0-60.66~20.04.1

5.15.0-60.66~20.04.1

ubuntu/linux-intel-iotg-5.15<5.15.0-1025.30~20.04.1

5.15.0-1025.30~20.04.1

ubuntu/linux-lowlatency-hwe-5.15<5.15.0-60.66~20.04.1

5.15.0-60.66~20.04.1

ubuntu/linux-oracle-5.15<5.15.0-1029.35~20.04.1

5.15.0-1029.35~20.04.1

ubuntu/linux-riscv-5.15<5.15.0-1029.33~20.04.1

5.15.0-1029.33~20.04.1

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<5.15.0-60.66

5.15.0-60.66

ubuntu/linux-allwinner-5.19*

ubuntu/linux-aws<5.15.0-1030.34

5.15.0-1030.34

ubuntu/linux-aws-5.19*

ubuntu/linux-aws-6.2*

ubuntu/linux-aws-6.5*

ubuntu/linux-azure<5.15.0-1033.40

5.15.0-1033.40

ubuntu/linux-azure-5.19*

ubuntu/linux-azure-6.2*

ubuntu/linux-azure-6.5*

ubuntu/linux-azure-fde<5.15.0-1033.40.1

5.15.0-1033.40.1

ubuntu/linux-azure-fde-5.19*

ubuntu/linux-azure-fde-6.2*

ubuntu/linux-gcp<5.15.0-1029.36

5.15.0-1029.36

ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

ubuntu/linux-gcp-6.5*

ubuntu/linux-gke<5.15.0-1027.32

5.15.0-1027.32

ubuntu/linux-gkeop<5.15.0-1015.19

5.15.0-1015.19

ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-hwe-6.5*

ubuntu/linux-ibm<5.15.0-1025.28

5.15.0-1025.28

ubuntu/linux-intel-iot-realtime*

ubuntu/linux-intel-iotg<5.15.0-1025.30

5.15.0-1025.30

ubuntu/linux-kvm<5.15.0-1028.33

5.15.0-1028.33

ubuntu/linux-lowlatency<5.15.0-60.66

5.15.0-60.66

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-lowlatency-hwe-6.5*

ubuntu/linux-nvidia<5.15.0-1017.17

5.15.0-1017.17

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<5.15.0-1029.35

5.15.0-1029.35

ubuntu/linux-oracle-6.5*

ubuntu/linux-raspi<5.15.0-1024.26

5.15.0-1024.26

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<5.15.0-1014.16

5.15.0-1014.16

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 debian/linux to a version that resolves this vulnerability.
Fixed in 6.0.6-1
Upgrade
Upgrade linux/Kernel to a version that resolves this vulnerability.
Fixed in 5.15.76
Upgrade
Upgrade linux/Kernel to a version that resolves this vulnerability.
Fixed in 6.0.6
Upgrade
Upgrade debian/linux to a version that resolves this vulnerability.
Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.15-1
Upgrade
Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1030.34~20.04.1
Upgrade
Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1033.40~20.04.1
Upgrade
Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1029.36~20.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-60.66~20.04.1
Upgrade
Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1025.30~20.04.1
Upgrade
Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-60.66~20.04.1
Upgrade
Upgrade ubuntu/linux-oracle-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1029.35~20.04.1
Upgrade
Upgrade ubuntu/linux-riscv-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1029.33~20.04.1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 5.15.0-60.66
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 5.15.0-1030.34
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 5.15.0-1033.40
Upgrade
Upgrade ubuntu/linux-azure-fde to a version that resolves this vulnerability.
Fixed in 5.15.0-1033.40.1
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 5.15.0-1029.36
Upgrade
Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.
Fixed in 5.15.0-1027.32
Upgrade
Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.
Fixed in 5.15.0-1015.19
Upgrade
Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.
Fixed in 5.15.0-1025.28
Upgrade
Upgrade ubuntu/linux-intel-iotg to a version that resolves this vulnerability.
Fixed in 5.15.0-1025.30
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 5.15.0-1028.33
Upgrade
Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.
Fixed in 5.15.0-60.66
Upgrade
Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.
Fixed in 5.15.0-1017.17
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 5.15.0-1029.35
Upgrade
Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.
Fixed in 5.15.0-1024.26
Upgrade
Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.
Fixed in 5.15.0-1014.16
Compensating control
In wwan_hwsim_dev_new(), call put_device() when device_register() fails so the kobject reference count reaches zero and the name allocated by dev_set_name() is freed by kobject_cleanup().

Event History

Sep 15, 2025

CVE Published

via MITRE·02:49 PM

Data Sourced

via MITRE·02:49 PM

Description

Data Sourced

via OSV·02:49 PM

DescriptionAffected Software

Data Sourced

via NVD·03:15 PM

RemedyDescriptionSeverityWeaknessAffected Software

Nov 11, 2026

Data Sourced

via OSV·09:37 AM

Severity

Frequently Asked Questions

What is the severity of CVE-2022-50331?

CVE-2022-50331 has been categorized with a severity level that indicates potential risk of memory leaks in the Linux kernel.

How do I fix CVE-2022-50331?

To fix CVE-2022-50331, it is recommended to update to the latest version of the Linux kernel where the vulnerability has been resolved.

What types of devices are affected by CVE-2022-50331?

CVE-2022-50331 affects devices using the Linux kernel, specifically those that utilize the wwan_hwsim module.

What causes the memory leak in CVE-2022-50331?

The memory leak in CVE-2022-50331 is caused by a failure in the device_register() function not properly decreasing the reference count of the kobject.

Is CVE-2022-50331 actively being exploited?

As of the latest information, there is no indication that CVE-2022-50331 is being actively exploited in the wild.

CVE-2022-50331: wwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new()

Affected Software

Remediation

Event History

Frequently Asked Questions

What is the severity of CVE-2022-50331?

How do I fix CVE-2022-50331?

What types of devices are affected by CVE-2022-50331?

What causes the memory leak in CVE-2022-50331?

Is CVE-2022-50331 actively being exploited?

Company

Resources

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