CVE-2022-48775: Drivers: hv: vmbus: Fix memory leak in vmbus_add_channel_kobj

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-07-16 · updated 2026-06-17
Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Fix memory leak in vmbus_add_channel_kobj kobject_init_and_add() takes reference even when it fails. According to the doc of kobject_init_and_add()： If this function returns an error, kobject_put() must be called to properly clean up the memory associated with the object. Fix memory leak by calling kobject_put().

Affected products

Linux kernel: from 4.15 before 4.19.231; from 4.20 before 5.4.181; from 5.5 before 5.10.102; from 5.11 before 5.15.25; from 5.16 before 5.16.11 — fixed in 4.19.231, 5.10.102, 5.15.25, 5.16.11, 5.4.181

How to fix

Upgrade to a fixed version: Linux kernel 4.19.231, 5.10.102, 5.15.25, 5.16.11. Check the vendor advisory for mitigations.

References

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