CVE-2022-50474
macintosh: fix possible memory leak in macio_add_one_device()
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.
INFO
Published Date :
Oct. 4, 2025, 4:15 p.m.
Last Modified :
Oct. 6, 2025, 2:56 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the patch that resolves the memory leak.
- Ensure dynamic device names are freed on failure.
- Remove unnecessary kfree() calls after fix.
- Verify device resource cleanup logic.
References to Advisories, Solutions, and Tools
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CVE-2022-50474
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CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-50474
is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-50474
weaknesses.
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CVE-2022-50474
vulnerability anywhere in the article.
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CVE-2022-50474
vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 04, 2025
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/19ded60b40e86b0903c8d5bd0161437ed5107a8b Added Reference https://git.kernel.org/stable/c/2ac0a7059b7bcbed35bfffa34a82c9a9e99638ef Added Reference https://git.kernel.org/stable/c/35858b87a943917fa30172aa4bf01ce7adbcb42c Added Reference https://git.kernel.org/stable/c/3a866ff6fc2232c8e393cdb55ffb8ce947349e03 Added Reference https://git.kernel.org/stable/c/5ca86eae55a2f006e6c1edd2029b2cacb6979515 Added Reference https://git.kernel.org/stable/c/76837e7f6b30da72ad59f56291e22804a219e015 Added Reference https://git.kernel.org/stable/c/aa9054267366ff0a382d403d17728e21951ddbb9 Added Reference https://git.kernel.org/stable/c/b29a2f1dd33ae9b94821ab2f4d398b9081786748 Added Reference https://git.kernel.org/stable/c/ca765257feb89dacf604ced9cd233db5f865dee0