CVE-2022-50474
Analyzed Analyzed - Analysis Complete
BaseFortify

Publication date: 2025-10-04

Last updated on: 2026-01-23

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: macintosh: fix possible memory leak in macio_add_one_device() Afer commit 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array"), the name of device is allocated dynamically. It needs to be freed when of_device_register() fails. Call put_device() to give up the reference that's taken in device_initialize(), so that it can be freed in kobject_cleanup() when the refcount hits 0. macio device is freed in macio_release_dev(), so the kfree() can be removed.
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Meta Information
Published
2025-10-04
Last Modified
2026-01-23
Generated
2026-06-16
AI Q&A
2025-10-04
EPSS Evaluated
2026-06-15
NVD
CVE-2022-50474
Affected Vendors & Products
Showing 8 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 2.6.30 (inc) to 4.9.337 (exc)
linux linux_kernel From 4.10 (inc) to 4.14.303 (exc)
linux linux_kernel From 4.15 (inc) to 4.19.270 (exc)
linux linux_kernel From 4.20 (inc) to 5.4.229 (exc)
linux linux_kernel From 5.5 (inc) to 5.10.163 (exc)
linux linux_kernel From 5.11 (inc) to 5.15.86 (exc)
linux linux_kernel From 5.16 (inc) to 6.0.16 (exc)
linux linux_kernel From 6.1 (inc) to 6.1.2 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-401 The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
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Executive Summary

This vulnerability is a possible memory leak in the macio_add_one_device() function of the Linux kernel. After a specific commit changed how device names are allocated dynamically, the code did not properly free the allocated memory when device registration failed. The fix involves correctly releasing the device reference to ensure the memory is freed, preventing the leak.

Impact Analysis

This vulnerability can lead to a memory leak in the Linux kernel when adding macio devices. Over time, this could cause increased memory usage and potentially degrade system performance or stability if the leak accumulates.

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