What’s Vulnerable › Vulnerabilities

CVE-2022-50510: perf/smmuv3: Fix hotplug callback leak in arm_smmu_pmu_init()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-07 · updated 2026-06-17
• Weakness: CWE-401

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")

Affected products

• Linux kernel: from 5.2 before 5.4.229; from 5.5 before 5.10.163; from 5.11 before 5.15.86; from 5.16 before 6.0.16; from 6.1 before 6.1.2 — fixed in 5.10.163, 5.15.86, 5.4.229, 6.0.16, 6.1.2

How to fix

Upgrade to a fixed version: Linux kernel 5.10.163, 5.15.86, 5.4.229, 6.0.16. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/359286f886feef38536eaa7e673dc3440f03b0a1
• https://git.kernel.org/stable/c/582babe17ea878ec1d76f30e03f3a6ce6e30eb91
• https://git.kernel.org/stable/c/6f2d566b46436a50a80d6445e82879686b89588c
• https://git.kernel.org/stable/c/b131304fe722853cf26e55c4fa21fc58a36e7f21
• https://git.kernel.org/stable/c/d69bdb61d577297d3851fc9f6403574bf73ef41f
• https://git.kernel.org/stable/c/f245ca9a0fe7f794a8187ad803d5e2ced5a11cb2

Get alerted when CVE-2022-50510 or the next vulnerability affects your stack