Bug 2363507 (CVE-2022-49836)

Summary: CVE-2022-49836 kernel: siox: fix possible memory leak in siox_device_add()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-05-01 15:07:28 UTC 
In the Linux kernel, the following vulnerability has been resolved:

siox: fix possible memory leak in siox_device_add()

If device_register() returns error in siox_device_add(),
the name allocated by dev_set_name() need be freed. As
comment of device_register() says, it should use put_device()
to give up the reference in the error path. So fix this
by calling put_device(), then the name can be freed in
kobject_cleanup(), and sdevice is freed in siox_device_release(),
set it to null in error path.
Comment 1 Avinash Hanwate 2025-05-02 03:41:13 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050138-CVE-2022-49836-510d@gregkh/T