Bug 2402246 (CVE-2023-53631)

Summary: CVE-2023-53631 kernel: platform/x86: dell-sysman: Fix reference leak
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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A reference leak flaw was found in the Linux kernel's Dell system management driver in the attribute duplicate detection logic. A local user on Dell systems can trigger this issue when the driver encounters duplicate sysfs attributes during initialization, causing a kobject reference to be acquired via kset_find_obj but never released. This results in a permanent reference leak that prevents proper cleanup and leads to resource exhaustion or denial of service.
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Description OSIDB Bzimport 2025-10-07 16:05:16 UTC 
In the Linux kernel, the following vulnerability has been resolved:

platform/x86: dell-sysman: Fix reference leak

If a duplicate attribute is found using kset_find_obj(),
a reference to that attribute is returned. This means
that we need to dispose it accordingly. Use kobject_put()
to dispose the duplicate attribute in such a case.

Compile-tested only.
Comment 1 Jon Moroney 2025-10-07 17:02:16 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025100713-CVE-2023-53631-0542@gregkh/T