Bug 2402300 (CVE-2022-50510) - CVE-2022-50510 kernel: perf/smmuv3: Fix hotplug callback leak in arm_smmu_pmu_init()
Summary: CVE-2022-50510 kernel: perf/smmuv3: Fix hotplug callback leak in arm_smmu_pmu...
Keywords:
Status: NEW
Alias: CVE-2022-50510
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-10-07 16:08 UTC by OSIDB Bzimport
Modified: 2025-10-14 23:44 UTC (History)
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Description OSIDB Bzimport 2025-10-07 16:08:12 UTC 
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")
Comment 1 Jon Moroney 2025-10-07 19:10:41 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025100701-CVE-2022-50510-c055@gregkh/T
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