CVE-2022-50510
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-07

Last updated on: 2026-03-17

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: perf/smmuv3: Fix hotplug callback leak in arm_smmu_pmu_init() arm_smmu_pmu_init() won't remove the callback added by cpuhp_setup_state_multi() when platform_driver_register() failed. Remove the callback by cpuhp_remove_multi_state() in fail path. Similar to the handling of arm_ccn_init() in commit 26242b330093 ("bus: arm-ccn: Prevent hotplug callback leak")
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Meta Information
Published
2025-10-07
Last Modified
2026-03-17
Generated
2026-06-16
AI Q&A
2025-10-07
EPSS Evaluated
2026-06-15
NVD
CVE-2022-50510
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
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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 flaw in the Linux kernel's perf subsystem related to the arm_smmu_pmu_init() function. Specifically, when platform_driver_register() fails, the callback added by cpuhp_setup_state_multi() is not removed, causing a hotplug callback leak. The fix involves removing the callback properly in the failure path using cpuhp_remove_multi_state().

Impact Analysis

The vulnerability can lead to a resource leak in the Linux kernel's hotplug callback mechanism, which might cause system instability or unexpected behavior related to CPU hotplug events. However, no direct impact details such as privilege escalation or data compromise are provided.

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