CVE-2022-49949: firmware_loader: Fix memory leak in firmware upload

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: 2025-06-18 · updated 2026-06-17
Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: firmware_loader: Fix memory leak in firmware upload In the case of firmware-upload, an instance of struct fw_upload is allocated in firmware_upload_register(). This data needs to be freed in fw_dev_release(). Create a new fw_upload_free() function in sysfs_upload.c to handle the firmware-upload specific memory frees and incorporate the missing kfree call for the fw_upload structure.

Affected products

Linux kernel: from 5.19 before 5.19.8; 6.0-rc1, 6.0-rc2, 6.0-rc3 — fixed in 5.19.8

How to fix

Upgrade to a fixed version: Linux kernel 5.19.8. Check the vendor advisory for mitigations.

References

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